Instruction Manual

Notice

© 2022 WALCHEM, Iwaki America Incorporated (hereinafter “Walchem”)

5 Boynton Road, Holliston, MA 01746 USA
(508) 429-1110
All Rights Reserved
Printed in USA

Proprietary Material

The information and descriptions contained herein are the property of WALCHEM. Such information and descriptions
may not be copied or reproduced by any means, or disseminated or distributed without the express prior written per-
mission of WALCHEM, 5 Boynton Road, Holliston, MA 01746.

This document is for information purposes only and is subject to change without notice.

Statement of Limited Warranty

WALCHEM warrants equipment of its manufacture, and bearing its identification to be free from defects in workmanship
and material for a period of 24 months for electronics and 12 months for mechanical parts and electrodes from date of
delivery from the factory or authorized distributor under normal use and service and otherwise when such equipment is
used in accordance with instructions furnished by WALCHEM and for the purposes disclosed in writing at the time of
purchase, if any. WALCHEM’s liability under this warranty shall be limited to replacement or repair, F.O.B. Holliston,
MA U.S.A. of any defective equipment or part which, having been returned to WALCHEM, transportation charges
prepaid, has been inspected and determined by WALCHEM to be defective. Replaceable elastomeric parts and glass
components are expendable and are not covered by any warranty.

THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY, EITHER EXPRESS OR IMPLIED, AS TO DESCRIPTION,
QUALITY, MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE OR USE, OR ANY OTHER MATTER.

180900 Rev. F August 2022

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Contents
1.0 INTRODUCTION������������������������������������������������������������������������������������������������������� 1

2.0 SPECIFICATIONS����������������������������������������������������������������������������������������������������� 2
2.1 Measurement Performance��������������������������������������������������������������������������������������� 2
2.2 Electrical: Input/Output���������������������������������������������������������������������������������������������� 4
2.3 Intended Use������������������������������������������������������������������������������������������������������������� 6
2.4 Mechanical����������������������������������������������������������������������������������������������������������������� 6
2.5 Variables and their Limits������������������������������������������������������������������������������������������� 7
3.0 UNPACKING & INSTALLATION������������������������������������������������������������������������������ 11
3.1 Unpacking the unit��������������������������������������������������������������������������������������������������� 11
3.2 Mounting the electronic enclosure��������������������������������������������������������������������������� 11
3.3 Sensor Installation��������������������������������������������������������������������������������������������������� 12
3.4 Icon Definitions�������������������������������������������������������������������������������������������������������� 19
3.5 Electrical installation������������������������������������������������������������������������������������������������ 20
4.0 FUNCTION OVERVIEW������������������������������������������������������������������������������������������ 35
4.1 Front Panel�������������������������������������������������������������������������������������������������������������� 35
4.2 Touchscreen������������������������������������������������������������������������������������������������������������ 35
4.3 Icons ����������������������������������������������������������������������������������������������������������������������� 35
4.4 Startup��������������������������������������������������������������������������������������������������������������������� 37
4.5 Shut Down��������������������������������������������������������������������������������������������������������������� 39
5.0 OPERATION using the touchscreen������������������������������������������������������������������������ 40
5.1 Alarms Menu ���������������������������������������������������������������������������������������������������������� 50
5.2 Inputs Menu ������������������������������������������������������������������������������������������������������������ 50
5.2.1 Contacting Conductivity���������������������������������������������������������������������������������� 53
5.2.2 Electrodeless Conductivity������������������������������������������������������������������������������ 54
5.2.3 Temperature���������������������������������������������������������������������������������������������������� 54
5.2.4 pH�������������������������������������������������������������������������������������������������������������������� 55
5.2.5 ORP���������������������������������������������������������������������������������������������������������������� 55
5.2.6 Disinfection������������������������������������������������������������������������������������������������������ 56
5.2.7 Generic Sensor ���������������������������������������������������������������������������������������������� 56
5.2.8 Corrosion Input������������������������������������������������������������������������������������������������ 57
5.2.9 Corrosion Imbalance Input������������������������������������������������������������������������������ 58
5.2.10 Transmitter Input and AI Monitor Input������������������������������������������������������������ 59
5.2.11 Fluorometer Input�������������������������������������������������������������������������������������������� 60
5.2.12 Analog Flowmeter Input���������������������������������������������������������������������������������� 60
5.2.13 Analog Tank Level Input���������������������������������������������������������������������������������� 61
5.2.14 DI State����������������������������������������������������������������������������������������������������������� 61
5.2.15 Flow Meter, Contactor Type���������������������������������������������������������������������������� 62
5.2.16 Flow Meter, Paddlewheel Type����������������������������������������������������������������������� 62
5.2.17 Feed Monitor��������������������������������������������������������������������������������������������������� 63
 5.2.18 DI Counter Input���������������������������������������������������������������������������������������������� 65
5.2.20 Virtual Input – Calculation������������������������������������������������������������������������������� 67
5.2.21 Virtual Input – Redundant������������������������������������������������������������������������������� 67
5.2.22 Virtual Input – Raw Value�������������������������������������������������������������������������������� 68
5.2.23 Virtual Input - Disturbance������������������������������������������������������������������������������� 69
5.2.24 Remote Modbus Sensor Virtual Input�������������������������������������������������������������� 70
5.3 Outputs Menu �������������������������������������������������������������������������������������������������������� 71
5.3.1 Relay or Control Outputs, Any Control Mode�������������������������������������������������� 71
5.3.2 Relay or Control Outputs, On/Off Control Mode��������������������������������������������� 72
5.3.3 Relay or Control Outputs, Flow Timer Control Mode�������������������������������������� 72
5.3.4 Relay or Control Outputs, Bleed and Feed Control Mode������������������������������� 73
5.3.5 Relay or Control Outputs, Bleed then Feed Control Mode������������������������������ 73
5.3.6 Relay or Control Outputs, Percent Timer Control Mode���������������������������������� 74
5.3.7 Relay or Control Outputs, Biocide Timer Control Mode���������������������������������� 74
5.3.8 Relay or Control Outputs, Alarm Output Mode������������������������������������������������ 75
5.3.9 Relay or Control Outputs, Time Proportional Control Mode���������������������������� 76
5.3.10 Relay or Control Outputs, Intermittent Sampling Control Mode���������������������� 76
5.3.11 Relay, Manual Mode��������������������������������������������������������������������������������������� 77
5.3.12 Relay or Control Outputs, Pulse Proportional Control Mode��������������������������� 78
5.3.13 Relay or Control Outputs, PID Control Mode�������������������������������������������������� 78
5.3.14 Relay or Control Outputs, Dual Set Point Mode���������������������������������������������� 81
5.3.15 Relay or Control Outputs, Timer Control Mode����������������������������������������������� 81
5.3.16 Relay or Control Outputs, Probe Wash Control Mode������������������������������������ 82
5.3.17 Relay or Control Outputs, Spike Control Mode����������������������������������������������� 84
5.3.18 Relay or Control Outputs Output, Flow Proportional Mode����������������������������� 85
5.3.19 Relay or Control Outputs, Target PPM Control Mode������������������������������������� 86
5.3.20 Relay, PPM by Volume Control Mode ������������������������������������������������������������ 87
5.3.21 Relay, Counter Timer Control Mode���������������������������������������������������������������� 88
5.3.22 Relay or Control Outputs, On/Off Disturbance Control Mode������������������������� 89
5.3.23 Relay or Control Outputs, Volumetric Blending Control Mode������������������������ 90
5.3.24 Relay or Control Outputs, Dual Switch Control Mode������������������������������������� 90
5.3.25 Relay or Control Outputs, Boolean Logic Control Mode��������������������������������� 91
5.3.26 Relay or Analog Output, Lag Control Mode���������������������������������������������������� 92
5.3.27 Relay or Control Outputs, Flow Meter Ratio Control Mode����������������������������� 98
5.3.28 Relay or Analog or Control Outputs, Disturbance Variable Control Mode .......... 99
5.3.29 Analog or Control Outputs, Proportional Control Mode��������������������������������� 100
5.3.30 Analog or Control Outputs, Flow Proportional Mode������������������������������������� 100
5.3.31 Analog or Control Outputs, PID Control Mode���������������������������������������������� 101
5.3.32 Analog Output, Manual Mode����������������������������������������������������������������������� 104
5.3.33 Analog Output, Retransmit Mode������������������������������������������������������������������ 104
5.4 Configuration Menu ��������������������������������������������������������������������������������������������� 104
5.4.1 Global Settings���������������������������������������������������������������������������������������������� 104
5.4.2 Security Settings������������������������������������������������������������������������������������������� 105
5.4.3 Ethernet Settings������������������������������������������������������������������������������������������� 105
5.4.4 Ethernet Details��������������������������������������������������������������������������������������������� 107
 5.4.5 WiFi Settings����������������������������������������������������������������������������������������������� 107
5.4.6 WiFi Details������������������������������������������������������������������������������������������������� 108
5.4.7 Remote Communications (Modbus and BACnet)��������������������������������������� 109
5.4.8 Email Report Settings��������������������������������������������������������������������������������� 109
5.4.9 Display Settings�������������������������������������������������������������������������������������������111
5.4.10 File Utilities���������������������������������������������������������������������������������������������������111
5.4.11 Controller Details����������������������������������������������������������������������������������������� 112
5.5 HOA Menu ��������������������������������������������������������������������������������������������������������� 113
5.6 Graph Menu ������������������������������������������������������������������������������������������������������� 113
6.0 OPERATION using Ethernet�������������������������������������������������������������������������������� 116
6.1 Connecting to a LAN�������������������������������������������������������������������������������������������� 116
6.1.1 Using DHCP������������������������������������������������������������������������������������������������ 116
6.1.2 Using a fixed IP Address����������������������������������������������������������������������������� 116
6.2 Connecting Directly to a Computer���������������������������������������������������������������������� 116
6.3 Navigating the web pages����������������������������������������������������������������������������������� 116
6.4 Graphs Webpage������������������������������������������������������������������������������������������������� 117
6.5 Software Upgrade������������������������������������������������������������������������������������������������ 117
6.6 Notepad Menu ��������������������������������������������������������������������������������������������������� 118
6.7 Remote Sensor Calibration��������������������������������������������������������������������������������� 118
7.0 MAINTENANCE��������������������������������������������������������������������������������������������������� 118
7.1 Electrode Cleaning�������������������������������������������������������������������������������������������� 119
7.2 Replacing the Fuse Protecting Powered Relays����������������������������������������������� 119
7.3 Replacing the System Fuse ����������������������������������������������������������������������������� 120
8.0 TROUBLESHOOTING����������������������������������������������������������������������������������������� 120

8.1 Calibration Failure��������������������������������������������������������������������������������������������� 120

8.1.1 Contacting Conductivity Sensors���������������������������������������������������������������� 120
8.1.2 Electrodeless Conductivity Sensors����������������������������������������������������������� 120
8.1.3 pH Sensors������������������������������������������������������������������������������������������������� 121
8.1.4 ORP Sensors���������������������������������������������������������������������������������������������� 121
8.1.5 Disinfection Sensors����������������������������������������������������������������������������������� 121
8.1.6 Analog Inputs ��������������������������������������������������������������������������������������������� 121
8.1.7 Temperature Sensors��������������������������������������������������������������������������������� 122
8.1.8 Corrosion Inputs����������������������������������������������������������������������������������������� 122
8.2 Alarm Messages�������������������������������������������������������������������������������������������������� 122
8.3 Procedure for Evaluation of Conductivity Electrode�������������������������������������������� 127
8.4 Procedure for Evaluation of the pH/ORP Electrode �������������������������������������������� 127
8.5 Diagnostic Lights������������������������������������������������������������������������������������������������� 127
9.0 Spare Parts Identification������������������������������������������������������������������������������������� 130

10.0 Service Policy����������������������������������������������������������������������������������������������������� 188

e
1.0 INTRODUCTION
The Walchem Intuition-9™ Series controllers offer a high level of flexibility in controlling water treatment
applications.

• There are four slots that accept a variety of Input/Output Modules, which provides unparalleled versatility. Dual sensor
input modules are available that are compatible with a variety of sensors (two sensors per module):
» Contacting conductivity
» Electrodeless conductivity
» pH
» ORP
» Any Walchem disinfection sensor
» Generic sensor (Ion Selective Electrodes or any type of sensor with a linear voltage output between -2 VDC
and 2 VDC)
• Three analog (4-20 mA) input modules with two, four or six input circuits is also available for use with 2,3 or
4-wire transmitters.
• Two other modules feature two or four isolated analog outputs that may be installed to retransmit sensor input signals
to a chart recorder, datalogger, PLC or other device. They may also be connected to valves, actuators or metering
pumps for linear proportional control or PID control.
• Another module provides two corrosion sensor inputs.
• Sixteen Virtual Inputs are configurable in the software, to either allow for calculations based on two real inputs, or to
allow to compare values from two sensors to provide redundancy.
• Eight or Twelve relay outputs may be set to a variety of control modes:
» On/Off set point control
» Time Proportional control
» Pulse Proportional control (when purchased with Pulse solid state opto outputs)
» Flow Proportional
» PID control (when purchased with Pulse solid state opto outputs)
» Lead/Lag control of up to 6 relays
» Dual set point
» Timer
» Bleed or Feed based on a Water Contactor or Paddlewheel flow meter input
» Feed and Bleed
» Feed and Bleed with Lockout
» Feed as a percent of Bleed
» Feed as a percent of elapsed time
» Daily, Weekly, 2-week or 4-week Biocide timers with pre-bleed and post-add lockout of bleed
» Intermittent sampling for boilers with proportional blowdown, controlling on a trapped sample
» Always on unless interlocked
» Probe Wash timer
» Spike to alternate set point on timed basis
» Target PPM
» PPM Volume
» Dual Switch
» Boolean Logic
» Diagnostic Alarm triggered by:
• High or Low sensor reading
• No Flow
• Relay output timeout
• Sensor error

Relays are available in several combinations of powered relays, dry contact relays, and pulse solid state opto relays.

Sixteen virtual Control Outputs are configurable in the software, using most of the possible relay or analog output control
algorithms, that may be used to interlock or activate actual control outputs.
1
Auxiliary DC power option boards, available with either 12 or 24 VDC, may be added to support high-wattage trans-
mitters or ancillary devices such as cell modems by supplying up to 10 watts of power.

The standard Ethernet feature provides remote access to the controller’s programming via a PC connected directly,
via a local area network, or via Walchem’s Fluent account management server. It also allows emailing of datalog files
(in CSV format, compatible with spreadsheets like Excel) and alarms, to up to eight email addresses. The Modbus
TCP and BACnet remote communications options allow communication with PC-based applications, HMI/SCADA
programs, Building Energy Management systems, Distributed Control Systems (DCS), as well as stand-alone HMI
devices.

Two optional WiFi cards are available, one which allows simultaneous Ethernet and WiFi communications, and one
that increases security by disabling Ethernet when WiFi is enabled. The WiFi can be set to Infrastructure Mode to
provide all the Ethernet functions above, or Ad-Hoc Mode to allow access to the programming wirelessly.

Our USB features provide the ability to upgrade the software in the controller to the latest version. The Config file feature
allows you to save all the set points from a controller onto a USB flash disk, and then import them into another controller,
making the programming of multiple controllers fast and easy. The data logging feature allows you to save the sensor
readings and relay activation events to a USB flash disk.

2.0 SPECIFICATIONS
2.1 Measurement Performance

pH ORP/ISE
Range -2 to 16 pH units Range -1500 to 1500 mV
Resolution 0.01 pH units Resolution 0.1 mV
Accuracy ± 0.01% of reading Accuracy ± 1 mV

Disinfection Sensors
Range (mV) -2000 to 1500 mV Range (ppm) 0-2 ppm to 0-20,000 ppm
Resolution (mV) 0.1 mV Resolution (ppm) Varies with range and slope
Accuracy (mV) ± 1 mV Accuracy (ppm) Varies with range and slope

100Ω RTD Temperature

Range 23 to 500°F (-5 to 260°C)
Resolution 0.1°F (0.1°C)
Accuracy ± 1% of Reading or ± 1°C, whichever is greater

1000Ω RTD Temperature

Range 23 to 500°F (-5 to 260°C)
Resolution 0.1°F (0.1°C)
Accuracy ± 1% of Reading or ± 0.3°C , whichever is greater

10k or 100k Thermistor Temperature

Range 23 to 194°F (-5 to 90°C)
Resolution 0.1°F (0.1°C)
Accuracy ± 1% of Reading or ± 0.3°C, whichever is greater

2
Analog (4-20 mA)
Range 0 to 22 mA
Resolution 0.01 mA
Accuracy ± 0.5% of reading

Corrosion
Range Resolution
0-2 mpy or mm/year 0.001 mpy or mm/year
0-20 mpy or mm/year 0.01 mpy or mm/year
0-200 mpy or mm/year 0.1 mpy or mm/year

0.01 Cell Contacting Conductivity

Range 0-300 µS/cm
Resolution 0.01 µS/cm, 0.0001 mS/cm, 0.001 mS/m, 0.0001 S/m, 0.01 ppm
Accuracy ± 1% of reading or 0.01 µS/cm, whichever is greater

0.1 Cell Contacting Conductivity

Range 0-3,000 µS/cm
Resolution 0.1 µS/cm, 0.0001 mS/cm, 0.01 mS/m, 0.0001 S/m, 0.1 ppm
Accuracy ± 1% of Reading or 0.1 µS/cm, whichever is greater

1.0 Cell Contacting Conductivity

Range 0-30,000 µS/cm
Resolution 1 µS/cm, 0.001 mS/cm, 0.1 mS/m, 0.0001 S/m, 1 ppm
Accuracy ± 1% of Reading or 1 µS/cm, whichever is greater

10.0 Cell Contacting Conductivity

Range 0-300,000 µS/cm
Resolution 10 µS/cm, 0.01 mS/cm, 1 mS/m, 0.001 S/m, 10 ppm
Accuracy ± 1% of Reading or 10 µS/cm, whichever is greater

Electrodeless Conductivity
Range Resolution Accuracy
500-12,000 µS/cm 1 µS/cm, 0.01 mS/cm, 0.1 mS/m, 0.001 S/m, 1 ppm 1% of reading
3,000-40,000 µS/cm 1 µS/cm, 0.01 mS/cm, 0.1 mS/m, 0.001 S/m, 1 ppm 1% of reading
10,000-150,000 µS/cm 10 µS/cm, 0.1 mS/cm, 1 mS/m, 0.01 S/m, 10 ppm 1% of reading
50,000-500,000 µS/cm 10 µS/cm, 0.1 mS/cm, 1 mS/m, 0.01 S/m, 10 ppm 1% of reading
200,000-2,000,000 µS/cm 100 µS/cm, 0.1 mS/cm, 1 mS/m, 0.1 S/m, 100 ppm 1% of reading

3
 Temperature °C Range Multiplier Temperature °C Range Multiplier
0 181.3 80 43.5
10 139.9 90 39.2
15 124.2 100 35.7
20 111.1 110 32.8
25 100.0 120 30.4
30 90.6 130 28.5
35 82.5 140 26.9
40 75.5 150 25.5
50 64.3 160 24.4
60 55.6 170 23.6
70 48.9 180 22.9

Note: Conductivity ranges on page 2 apply at 25°C. At higher temperatures, the range is reduced per the range multiplier
chart.

2.2 Electrical: Input/Output
Input Power Model Code Dependent:
Relay Board Option 9: 100 to 240 VAC +/- 10%, 50 or 60 Hz, 20 A maximum
All other options: 100 to 240 VAC +/- 10%, 50 or 60 Hz, 15 A maximum

Optional Auxiliary DC Power 12V or 24V, 10 Watts, fully isolated with short circuit protection

Inputs
Sensor Input Signals (0 to 8 depending on model code):
Contacting Conductivity 0.01, 0.1, 1.0, or 10.0 cell constant OR
Electrodeless Conductivity OR
Disinfection OR
Amplified pH, ORP or ISE Requires a preamplified signal. Walchem WEL or WDS series recommended.
±5VDC power available for external preamps.
Each sensor input card contains a temperature input
Temperature 100 or 1000 ohm RTD, 10K or 100K Thermistor
Analog (4-20 mA) Sensor Input (0 to 24 2-wire loop powered or self-powered transmitters supported
depending on model code): 3 or 4 –wire transmitters supported
Two to Six channels per board, depending on model
Channel 1, 130 ohm input resistance
Channel 2-6, 280 ohm input resistance
All channels fully isolated, input and power
Available Power:
One independent isolated 24 VDC ± 15% supply per channel
1.5 W maximum for each channel
Digital Input Signals (12 standard):
State-Type Digital Inputs Electrical: Optically isolated and providing an electrically isolated
12VDC power with a nominal 2.3mA current when the digital input
switch is closed
Typical response time: < 2 seconds
Devices supported: Any isolated dry contact (i.e. relay, reed switch)
Types: DI State

4
Low Speed Counter-Type Digital Inputs Electrical: Optically isolated and providing an electrically isolated
12VDC power with a  nominal 2.3mA current when the digital input
switch is closed 0-20 Hz, 25 msec minimum width
Devices supported: Any device with isolated open drain, open collector,
transistor or reed switch
Types: Contacting Flowmeter, Flow Verify
High Speed Counter-Type Digital Inputs Electrical: Optically isolated and providing an electrically isolated
12VDC power with a  nominal 2.3mA current when the digital input
switch is closed, 0-500 Hz, 1.00 msec minimum width. Minimum pulse
frequency for the rate to be displayed: 0.17 Hz
Devices supported: Any device with isolated open drain, open collector,
transistor or reed switch
Types: Paddlewheel Flowmeter, DI Counter
Outputs
Powered mechanical relays (0 to 12 Pre-powered on circuit board switching line voltage. Two, three or four
depending on model code): relays are fused together (depending on model code) as one group, total
current for this group must not exceed 6 A (resistive), 1/8 HP (93 W)
Dry contact mechanical relays (0 to 12 6 A (resistive), 1/8 HP (93 W)
depending on model code): Dry contact relays are not fuse protected
Pulse Outputs (0 to 12 depending on Opto-isolated, Solid State Relay
model code): 200mA, 40 VDC Max.
VLOWMAX = 0.05V @ 18 mA
Accuracy (0-10 Hz): ± 0.5% of Pulse Rate, (10-20 Hz): ± 1.0%,
(20-40 Hz): ± 2.0%
4 - 20 mA (0 to 16 depending on model Internally powered, 15 VDC, Fully isolated
code) 600 Ohm max resistive load
Resolution 0.0015% of span
Accuracy ± 0.5% of reading
Ethernet 10/100 802.3-2005
Auto MDIX support
Auto Negotiation
Wi-Fi Radio Protocol: IEEE 802.11 b/g/n
Security Protocols (Ad-Hoc Mode): WPA2-Personal
Security Protocols (Infrastructure Mode): WPA/WPA2-Personal, WEP
Certifications and Compliance: FCC, IC TELEC, CE/ETSI, RoHS, Wi-Fi
Certified
NOTE on Wi-Fi:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequen-
cy energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference
to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
USB Connector: Type A receptacle
Speed: High speed (480 Mbit)
Power: 0.5 A maximum

Battery (Real-Time Clock) Model BR2032, 3-volt Lithium Coin Cell 20 mm diameter

5
Agency Approvals:
Safety UL 61010-1:2012 3rd Ed + Rev:2019
CSA C22.2 No. 61010-1:2012 3rd Ed. + U1; U2
IEC 61010-1:2010 3rd Ed. + A1:2016
EN 61010-1:2010 3rd Ed. + A1:2019
BS EN 61010-1:2010 + A1:2019
EMC IEC 61326-1:2020
EN 61326-1:2013
BS EN 61326-1:2013
Note:
For EN 61000-4-3 Radiated RF Immunity, the controller meets Performance Criteria B. In environments where
severe radio-frequency interference (RFI) is present, the pH electrode and the WiFi module can be affected. If this
occurs, the controller should be relocated away from the electromagnetic interference (EMI) source.

For EN 61000-4-6 Conducted RF Immunity, the controller meets Performance Criteria B. In environments where
severe radio-frequency interference (RFI) is present, the pH electrode and the contacting conductivity sensor can be
affected. If this occurs, the controller should be relocated away from the electromagnetic interference (EMI) source.

*Class A equipment: Equipment suitable for use in establishments other than domestic, and those directly connected
to a low voltage (100-240 VAC) power supply network which supplies buildings used for domestic purposes.

2.3 Intended Use
The Walchem Intuition-9 is a microprocessor-based measuring and control instrument used to measure water quality
parameters and other process variables in a wide range of water and wastewater treatment applications. Operating the
instrument in any way other than as described in these instructions may compromise the safety and function of the
measuring system and is therefore impermissible. Electrical connection work and maintenance work may only be car-
ied out by qualified personnel. The manufacturer is not liable for damage caused by improper or non-designated use.

2.4 Mechanical
Enclosure Material Polycarbonate
Enclosure Rating Certified to UL 50 and UL 50E Type 4X. IEC 60529 meets IP66.
Environmental Conditions Can be installed indoors and outdoors. Suitable for wet location.
Dimensions 13.13” W x 14.43” H x 6.57” D (333 mm x 367 mm x 167 mm)
Display 7.0” TFT Color Display 1024x3 (RGB) x 600 pixels with
capacitive touchscreen
Operating Ambient Temp -4 to 122 °F (-20 to 50 °C)
Storage Temperature -4 to 176°F (-20 to 80°C)
Humidity 10 to 90% non-condensing
Pollution Degree 2
Overvoltage Category II
Altitude 2000 m (6560 ft) maximum

Mechanical (Sensors)(*see graph)
Process Connec-
Sensor Pressure Temperature Materials tions
CPVC: 32-158°F (0 to 1” NPTM submer-
70°C)* CPVC, FKM in-line o-ring sion
Electrodeless conductivity 0-150 psi (0-10 bar)*
PEEK: 32-190°F (0 to PEEK, 316 SS in-line adapter 2” NPTM in-line
88°C) adapter

6
pH 0-100 psi (0-7 bar)* 50-158°F (10-70°C)* 1” NPTM submer-
CPVC, Glass, FKM o-rings,
sion
HDPE, Titanium rod, glass-filled
ORP 0-100 psi (0-7bar)* 32-158°F (0-70°C)* 3/4” NPTF in-line
PP tee
tee
Contacting conductivity
0-200 psi (0-14 bar) 32-248°F (0-120°C) 316SS, PEEK 3/4” NPTM
(Condensate)
Contacting conductivity Graphite, Glass-filled PP, FKM
0-150 psi (0-10 bar)* 32-158°F (0-70°C)* 3/4” NPTM
Graphite (Cooling Tower) o-ring
Contacting conductivity SS 316SS, Glass-filled PP, FKM
0-150 psi (0-10 bar)* 32-158°F (0-70°C)* 3/4” NPTM
(Cooling Tower) o-ring
Contacting conductivity
0-250 psi (0-17 bar) 32-401°F (0-205°C) 316SS, PEEK 3/4” NPTM
(Boiler)
Contacting conductivity
0-300 psi (0-21 bar)* 32-158°F (0-70°C)* 316SS, PEEK 3/4” NPTM
(High Pressure Tower)
Glass, Polymer, PTFE, 316SS,
pH (High Pressure) 0-300 psi (0-21 bar)* 32-275°F (0-135°C)* 1/2” NPTM gland
FKM
Platinum, Polymer, PTFE,
ORP (High Pressure) 0-300 psi (0-21 bar)* 32-275°F (0-135°C)* 1/2” NPTM gland
316SS, FKM
Free Chlorine/Bromine 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)
Extended pH Range Free 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)
Chlorine/Bromine
Total Chlorine 0-14.7 psi (0-1 bar) 32-113°F (0-45°C) PVC, Polycarbonate,
1/4” NPTF Inlet
silicone rubber, SS, PEEK, FKM,
Chlorine Dioxide 0-14.7 psi (0-1 bar) 32-131°F (0-55°C) 3/4” NPTF Outlet
Isoplast
Ozone 0-14.7 psi (0-1 bar) 32-131°F (0-55°C)
Peracetic Acid 0-14.7 psi (0-1 bar) 32-131°F (0-55°C)
Hydrogen Peroxide 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)
Corrosion 0-150 psi (0-10 bar) 32-158°F (0-70°C)* Glass-filled PP, FKM o-ring 3/4” NPTM
Flow switch manifold 0-150 psi (0-10 bar) up to 100°F (38°C)* 32-140°F (0-60°C) GFRPP, PVC, FKM, Isoplast 3/4” NPTF
0-50 psi (0-3 bar) at 140°F (60°C)
Flow switch manifold
0-300 psi (0-21 bar)* 32-158°F (0-70°C)* Carbon steel, Brass, 316SS, FKM 3/4” NPTF
(High Pressure)

Bar PSI
Pressure (PSI) vs. Temperature (F)
24.1 350

20.7 300

17.2 250
pH/ORP
13.8 200
LD2
10.3 150
Cond/Corrosion
6.9 100
HP Cond/Steel
3.4 50
HP pH/ORP/Steel
0
°F
37.7 100
43.3 110
48.8 120
54.4 130
60.0 140
65.5 150
71.1 160
76.6 170
82.2 180
30
40
50
60
70
80
90
10.0
15.5
21.1
26.6
32.2

°C
-1.1
4.4

2.5 Variables and their Limits

Sensor Input Settings Low Limit High Limit
Alarm limits Low end of sensor range High end of sensor range
Input alarm dead band Low end of sensor range High end of sensor range

7
Cell constant (conductivity only) 0.01 10
Smoothing Factor 0% 90%
Temp Comp Factor (conductivity linear ATC only) 0% 20.000%
Installation Factor (Electrodeless conductivity only) 0.5 1.5
Cable length 0.1 3,000
PPM conversion factor (only if units = PPM) 0.001 10.000
Default temperature -20 500
Deadband Low end of sensor range High end of sensor range
Calibration Required Alarm 0 days 365 days
Sensor Slope (Generic sensor only) -1,000,000 1,000,000
Sensor Offset (Generic sensor only) -1,000,000 1,000,000
Low Range (Generic sensor, Virtual Input) -1,000,000 1,000,000
High Range (Generic sensor, Virtual Input) -1,000,000 1,000,000
Constant (Virtual Input only) 10% below Low Range setting 10% above High Range setting
Deviation Alarm (Virtual Input) 10% below Low Range setting 10% above High Range setting
4 mA value (Transmitter, AI Monitor analog input only) 0 100
20 mA value (Transmitter, AI Monitor analog input only) 0 100
Max Sensor Range (Fluorometer analog input only) 0 ppb 100,000 ppb
Dye/Product Ratio (Fluorometer analog input only) 0 ppb/ppm 100 ppb/ppm
Set Flow Total (Flowmeter analog input only) 0 1,000,000,000
Flowmeter Max (Flowmeter analog input only) 0 1,000,000
Input Filter (Flowmeter analog input only) 1 mA 21 mA
Totalizer Alarm (Flowmeter analog input only) 0 2,000,000,000
Min Disturbance (Disturbance Virtual Input only) Low end of sensor range High end of sensor range
Max Disturbance (Disturbance Virtual Input only) Low end of sensor range High end of sensor range
Value at Min Disturbance (Disturbance Virtual Input only) 0 100
Value at Max Disturbance (Disturbance Virtual Input only) 0 100
Stabilization Time (Corrosion only) 0 hours 999 hours
Electrode Alarm (Corrosion only) 0 days 365 days
Alloy Multiplier (Corrosion only) 0.2 5.0
Tank Capacity 0 1,000,000
Empty At 0 mA 21 mA
Full At 0 mA 21 mA
Digital flow meter input settings Low Limit High Limit
Totalizer alarm 0 2,000,000,000
Volume/contact for units of Gallons or Liters 1 100,000
Volume/contact for units of m 3 0.001 1,000
K Factor for units of Gallons or Liters 0.01 100,000
K Factor for units of m3 1 1,000,000
Paddlewheel rate alarm limits 0 High end of sensor range
Paddlewheel rate alarm deadband 0 High end of sensor range
Smoothing Factor 0% 90%
Set Flow Total 0 1,000,000,000
Feed Monitor Input Settings Low Limit High Limit
Totalizer Alarm 0 vol. units 1,000,000 vol. units
Set Flow Total 0 vol. units 1,000,000,000 vol. units

8
Flow Alarm Delay 00:10 Minutes 59:59 Minutes
Flow Alarm Clear 1 Contact 100,000 Contacts
Dead Band 0% 90%
Reprime Time 00:00 Minutes 59:59 Minutes
Volume/Contact 0.001 ml 1,000.000 ml
Smoothing Factor 0% 90%
Counter Input Settings Low Limit High Limit
DI Counter Rate Alarms 0 30,000
DI Counter Rate Deadband 0 30,000
Totalizer Alarm 0 2,000,000,000
Set Total 0 2,000,000,000
Units per Pulse 0.001 1,000
Smoothing Factor 0% 90%
Remote Modbus Input Settings Low Limit High Limit
Alarm Limits Low end of defined range High end of defined range
Deadband Low end of defined range High end of defined range
Low Range -1,000,000 1,000,000
High Range -1,000,000 1,000,000
Reply Timeout 1 second 15 seconds
Remote Register 0 65535
Update Period 00:01 MM:SS 59:59 MM:SS
Timeout Alarm Delay 00:10 MM:SS 59:59 MM:SS
Relay output settings Low Limit High Limit
Output Limit Time 1 second 86,400 seconds (0 = unlimited)
Hand Time Limit 1 second 86,400 seconds (0 = unlimited)
Daily Max Time 00:01 MM:SS 23:59 MM:SS (0 = unlimited)
Min Relay Cycle 0 seconds 300 seconds
Set Point Low end of sensor range High end of sensor range
Spike Set Point (Spike mode) Low end of sensor range High end of sensor range
Onset Time (Spike mode) 0 seconds 23:59:59 HH:MM:SS
Duty Cycle Period (On/Off, Spike, Dual Setpoint modes) 0:00 minutes 59:59 minutes
Duty Cycle (On/Off, Spike, Dual Setpoint modes) 0% 100%
On Delay Time (Manual, On/Off, Dual Setpoint modes, Dual 0 seconds 23:59:59 HH:MM:SS
Switch, Alarm modes, Boolean Logic)
Off Delay Time (Manual, On/Off, Dual Setpoint modes, 0 seconds 23:59:59 HH:MM:SS
Dual Switch, Alarm modes, Boolean Logic)
Dead Band Low end of sensor range High end of sensor range
Feed duration (Flow Timer, Counter Timer mode) 0 seconds 86,400 seconds
Accumulator Volume (Flow Timer, Target PPM, PPM 1 1,000,000
Volume, Volumetric Blend, Flow Meter Ratio modes)
Accumulator Setpoint (Counter Timer mode) 1 1,000,000
Feed Percentage (Bleed then Feed mode) 0% 1000%
Feed Lockout Time Limit (Bleed & Feed, Bleed then Feed modes) 0 seconds 86,400 seconds
Prebleed To Conductivity (Biocide mode) 1 (0 = no prebleed) High end of sensor range
Prebleed Time (Biocide mode) 0 seconds 86,400 seconds
Bleed Lockout (Biocide mode) 0 seconds 86,400 seconds
Event duration (Biocide, Timer modes) 0 30,000

9
Proportional band (Time/Pulse Proportional mode, Low end of sensor range High end of sensor range
Intermittent Sampling)
Sample period (Time Proportional mode) 0 seconds 3600 seconds
Sample Time (Intermittent Sampling mode) 0 seconds 3600 seconds
Hold Time (Probe Wash, Intermittent Sampling modes) 0 seconds 3600 seconds
Maximum Blowdown (Intermittent Sampling mode) 0 seconds 3600 seconds
Wait Time (Intermittent Sampling mode) 0 seconds 86,400 seconds
Max Rate (Pulse Proportional, Pulse PID, Flow Prop modes) 10 pulses/minute 2400 pulses/minute
Minimum Output (Pulse Proportional, Pulse PID modes) 0% 100%
Maximum Output (Pulse Proportional, Pulse PID modes) 0% 100%
Gain (Pulse PID Standard mode) 0.001 1000.000
Integral Time (Pulse PID Standard mode) 0.001 seconds 1000.000 seconds
Derivative Time (Pulse PID Standard mode)us 0 seconds 1000.000 seconds
Proportional Gain (Pulse PID Parallel mode) 0.001 1000.000
Integral Gain (Pulse PID Parallel mode) 0.001 /second 1000.000 /second
Derivative Gain (Pulse PID Parallel mode) 0 seconds 1000.000 seconds
Input Minimum (Pulse PID modes) Low end of sensor range High end of sensor range
Input Maximum (Pulse PID modes) Low end of sensor range High end of sensor range
Wear Cycle Time (Lag mode) 10 seconds 23:59:59 HH:MM:SS
Delay Time (Lag mode) 0 seconds 23:59:59 HH:MM:SS
Target (Target PPM, PPM Volume modes) 0 ppm 1,000,000 ppm
Pump Capacity (Target PPM, PPM Volume modes) 0 gal/hour or l/hour 10,000 gal/hour or l/hour
Pump Setting (Target PPM, PPM Volume modes) 0% 100%
Specific Gravity (Target PPM, PPM Volume modes) 0 g/ml 9.999 g/ml
Blend Volume (Volumetric Blend mode) 1 1,000,000
Low Cycles Limit (Target PPM, PPM Volume mode) 0 cycles of concentration 100 cycles of concentration
Bleed Volume (Flow Meter Ratio mode) 1 1,000,000
Pump Capacity (Flow Prop mode) 0 gal/hour or l/hour 10,000 gal/hour or l/hour
Pump Setting (Flow Prop mode) 0% 100%
Specific Gravity (Flow Prop mode) 0 g/ml 9.999 g/ml
Target (Flow Prop mode) 0 ppm 1,000,000 ppm
Analog (4-20 mA) Output Settings Low Limit High Limit
4 mA Value (Retransmit mode) Low end of sensor range High end of sensor range
20 mA Value (Retransmit mode) Low end of sensor range High end of sensor range
Hand Output 0% 100%
Set Point (Proportional, PID modes) Low end of sensor range High end of sensor range
Proportional Band (Proportional mode) Low end of sensor range High end of sensor range
Minimum Output (Proportional, PID, Disturbance modes) 0% 100%
Maximum Output (Proportional, PID, Disturbance modes) 0% 100%
Off Mode Output (Proportional, PID, Flow Prop, 0 mA 21 mA
Disturbance modes)
Error Output (not in Manual mode) 0 mA 21 mA
Hand Time Limit (not in Retransmit mode) 1 second 86,400 seconds (0 = unlimited)
Output Time Limit (Proportional, PID, Disturbance modes) 1 second 86,400 seconds (0 = unlimited)
Gain (PID, Standard mode) 0.001 1000.000
Integral Time (PID Standard mode) 0.001 seconds 1000.000 seconds
Derivative Time (PID Standard mode) 0 seconds 1000.000 seconds
Proportional Gain (PID Parallel mode) 0.001 1000.000
10
Integral Gain (PID Parallel mode) 0.001 /second 1000.000 /second
Derivative Gain (PID Parallel mode) 0 seconds 1000.000 seconds
Input Minimum (PID modes) Low end of sensor range High end of sensor range
Input Maximum (PID modes) Low end of sensor range High end of sensor range
Pump Capacity (Flow Prop mode) 0 gal/hour or l/hour 10,000 gal/hour or l/hour
Pump Setting (Flow Prop mode) 0% 100%
Specific Gravity (Flow Prop mode) 0 g/ml 9.999 g/ml
Target (Flow Prop mode) 0 ppm 1,000,000 pm
Low Cycles Limit (Flow Proportional mode) 0 cycles of concentration 100 cycles of concentration
Configuration settings Low Limit High Limit
Local Password 0000 9999
Log in Timeout 10 minutes 1440 minutes
Fluent update period 1 minute 1440 minutes
Fluent reply timeout 10 seconds 60 seconds
Alarm Delay 0:00 minutes 59:59 minutes
SMTP Port 0 65535
TCP Timeout 1 second 240 seconds
Auto Dim Time 0 seconds 23:59:59 HH:MM:SS
Device ID (BACnet) 1 4194302
Data Port (Modbus, BACnet) 1 65535
Ad-Hoc Time Limit 1 min. 1440 min.
Graph settings Low Limit High Limit
Low axis limit Low end of sensor range High end of sensor range
High axis limit Low end of sensor range High end of sensor range

3.0 UNPACKING & INSTALLATION

3.1 Unpacking the unit
Inspect the contents of the carton. Please notify the carrier immediately if there are any signs of damage to the controller or
its parts. Contact your distributor if any of the parts are missing. The carton should contain an Intuition-9™ series control-
ler and an instruction manual. Any options or accessories will be incorporated as ordered.

3.2 Mounting the electronic enclosure

The controller is supplied with mounting holes on the enclosure. It should be wall mounted with the display at eye
level, on a vibration-free surface, utilizing all four mounting holes for maximum stability. Do not install the enclosure
in a location where it will be exposed to direct sunlight. Use M6 (1/4” diameter) fasteners that are appropriate for
the substrate material of the wall. The enclosure is NEMA 4X (IP66) rated. The maximum operating ambient tem-

11
perature is 122°F (50°C); this should be considered if installation is in a high temperature location. The enclosure
requires the following clearances:

Top: 2” (50 mm)

Left: 10” (254 mm)
Right: 4” (102 mm)
Bottom: 7” (178 mm)
3.3 Sensor Installation
Refer to the specific instructions supplied with the sensor being used, for detailed installation instructions.

General Guidelines
Locate the sensors where an active sample of water is available and where the sensors can easily be removed for
cleaning. Position the sensor such that air bubbles will not be trapped within the sensing area. Position the sensor
where sediment or oil will not accumulate within the sensing area.

In-Line Sensor Mounting

In-line mounted sensors must be situated so that the tee is always full and the sensors are never subjected to a
drop in water level resulting in dryness. Refer to Figure 1 for typical installation.
Tap off the discharge side of the recirculation pump to provide a minimum flow of 1 gallon per minute through
the flow switch manifold. The sample must flow into the bottom of the manifold in order to close the flow switch,
and return to a point of lower pressure in order to ensure flow. Install an isolation valve on both sides of the man-
ifold to stop flow for sensor maintenance.
IMPORTANT: To avoid cracking the female pipe threads on the supplied plumbing parts, use no more than 3
wraps of Teflon tape and thread in the pipe FINGER tight plus 1/2 turn! Do not use pipe dope to seal the threads
of the flow switch because the clear plastic will crack!

Submersion Sensor Mounting

If the sensors are to be submersed in the process, mount them firmly to the tank, and protect the cable with
plastic pipe, sealed at the top with a cable gland, to prevent premature failure. Place the sensors in an area of good
solution movement.
Sensors should be located such that they respond rapidly to a well-mixed sample of the process water and the
treatment chemicals. If they are too close to the chemical injection point, they will see spikes in concentration
and cycle on and off too frequently. If they are too far away from the chemical injection point, they will respond
too slowly to the concentration changes, and you will overshoot the set point.
The contacting conductivity sensor should be placed as close to the controller as possible, to a maximum
distance of 250 ft. (76 m). Less than 25 ft. (8 m) is recommended. The cable must be shielded from background
electrical noise. Always route low voltage (sensor) signals with at least a 6” (15 cm) separation from AC voltage wiring.
The electrodeless conductivity sensor should be placed as close to the controller as possible, to a maximum
distance of 120 ft. (37 m). Less than 20 ft. (6 m) is recommended. The cable must be shielded from background
electrical noise. Always route low voltage (sensor) signals with at least a 6” (15 cm) separation from AC voltage
wiring. These sensors are affected by the geometry and conductivity of their surroundings, so either maintain 6
inches (15 cm) of sample around the sensor or ensure that any nearby conductive or non-conductive items are
consistently positioned. Do not install the sensor in the path of any electrical current that may be flowing in the
solution, as this will shift the conductivity reading.
The amplified pH/ORP/ISE electrode should be placed as close to the controller as possible, to a maximum dis-
tance of 1000 feet (305 m) from the controller. A junction box and shielded cable are available to extend the stan-
dard 20 foot (6 m) length. pH and ORP electrodes must be installed such that the measuring surfaces will always
remain wet. A U-trap provided in the manifold design should achieve this, even if the sample flow stops. These
electrodes also must be installed with the measuring surfaces pointing down; that is 5 degrees above the horizontal,
at a minimum. The flow velocity past the sensor must be less than 10 ft./sec. (3 m/sec.)
The disinfection sensor should be placed as close to the controller as possible, to a maximum distance of 100
feet (30 m) from the controller. A junction box and shielded cable are available to extend the standard 20 foot (6
12
 COOLING TOWER

METERING
PUMPS

HEAT
EXCHANGER

Figure 1 Typical Installation – Cooling Tower

13
 AC POWER

FLOW IN FLOW OUT

SUBMERSION
ELECTRODE
ACID BASE
pH
PROBE

Figure 2 Typical Installation – Submersion

14
 SAMPLE RETURN

1 ATMOSPHERE MAXIMUM

ROTAMETER
30-100 LPH SENSOR

FLOW CELL
ISOLATION FLOW
VALVE SWITCH
(NORMALLY FLOW
OPEN) CONTROL
VALVE

SAMPLE
VALVE

RECIRCULATION
PUMP
PROCESS WATER

Figure 3 Typical Installation – Disinfection Sensor

15
 m) length. The sensor should be mounted such that the measuring surfaces will always stay wet. If the membrane
dries out, it will respond slowly to changing disinfectant values for 24 hours, and if dried out repeatedly, will fail
prematurely. The flow cell should be placed on the discharge side of a circulation pump or downhill from a grav-
ity feed. Flow into the cell must come from the bottom side that has the ¾” x ¼” NPT reducing bushing installed.
The reducing bushing provides the flow velocity required for accurate readings and must not be removed! A “U”
trap should be installed so that if the flow stops, the sensor is still immersed in the water. The outlet of the flow
cell must be plumbed to open atmosphere unless the system pressure is at or below 1 atmosphere. If the flow
through the line cannot be stopped to allow for cleaning and calibration of the sensor, then it should be placed in
a by-pass line with isolation valves to allow for sensor removal. Install the sensor vertically, with the measuring
surface pointing down, at least 5 degrees above horizontal. Flow rate regulation must be done upstream from the
sensor, because any flow restriction downstream can increase the pressure above atmospheric and damage the
membrane cap!
The corrosion sensor should be placed as close to the controller as possible, to a maximum distance of 100 feet
(30 m) from the controller. A junction box and shielded cable (p/n 100084) are available to extend the standard
6 foot (3 m) or 20 foot (6 m) length. The sensor should not be installed unless the o-rings/electrodes that match
the metallurgy to be examined are attached to the steel threaded rods. Standard corrosion electrodes are 5 cm2
surface area. Do not touch the metal electrodes; they should be clean and free of any scratches, oils or contami-
nation to accurately measure the corrosion. The sensor should be mounted horizontally, such that the measuring
surfaces will always stay completely wet. The sensor should ideally be installed in the side branch of a 1” or ¾”
tee, with the flow entering the tee through the top branch and flowing away from the base of the sensor, towards
the tips of the electrodes. A constant flow rate is required, at a minimum of 1.5 gpm (5.7 lpm) with an ideal flow
rate of 5 gpm (19 lpm). If more than one metal is to be used, the most noble metal should be first.
Important Boiler Sensor Installation Notes: (refer to typical installation drawing)
1. Make sure the minimum water level in the boiler is at least 4-6 inches above the skimmer blowdown line. 
If the skimmer line is closer to the surface, it is likely that steam will be drawn into the line instead of boiler
water. The skimmer line must also be installed above the highest tube.
2. Maintain a 3/4 inch minimum pipe ID with no flow restrictions from the tap for the boiler skimmer blow-
down line to the electrode.  If the ID is reduced below 3/4 inch, then flashing will occur beyond that point
and the conductivity reading will be low and erratic.  Minimize the usage of tees, valves, elbows or unions
between the boiler and the electrode.
3. A manual shut off valve should be installed so that the electrode can be removed and cleaned.  This valve
must be a full port valve in order to avoid a flow restriction.
4. Keep the distance between the tap for the boiler skimmer line to the electrode as short as possible, to a maxi-
mum of 10 feet.
5. Mount the electrode in the side branch of a cross in a horizontal run of pipe. This will minimize entrapment
of steam around the electrode and will allow any solids to pass through.
6. There MUST be a flow restriction after the electrode and/or control valve in order to provide back pressure. 
This flow restriction will be either a flow control valve or an orifice union.  The amount of the flow restric-
tion will affect the blowdown rate as well, and should be sized accordingly.
7. Install the motorized ball valve or solenoid valve per the manufacturer’s instructions.

For best results, align the hole in the conductivity electrode such that the direction of water flow is through the
hole.

Guide to Sizing Blowdown Valves and Orifice Plates

1. Determine the Rate of Steam Production in Pounds per Hour:
Either read off the boiler name plate (water-tube boilers) or Calculate from horsepower rating (fire-tube
boilers): HP x 34.5 = lbs/hr.  Example: 100 HP = 3450 lbs/hr.
2. Determine the Concentration Ratio (BASED ON FEEDWATER)
A water treatment chemical specialist should determine the desired number of cycles of concentration. This

16
 is the ratio of TDS in the boiler water to TDS in the feedwater. Note that feedwater means the water that is
fed to the boiler from the deaerator and includes makeup water plus condensate return. Example: 10 cycles
of concentration has been recommended
3. Determine the Required Blowdown Rate in Pounds Per Hour
Blowdown Rate = Steam Production / (Concentration Ratio –1) Example: 3450/(10-1) = 383.33 lbs./hr
4. Determine if Continuous or Intermittent Sampling is Required
Use intermittent sampling when the boiler operation or loading is intermittent, or on boilers where the
required blowdown rate is less than 25% of the smallest available flow control valve or less than the flow
through the smallest orifice. See the graphs on the next page.
Use continuous sampling when the boiler is operating 24 hours per day and the required blowdown rate is
more than 25% of the smallest applicable flow control valve or orifice. See the graphs on the next page.
Use of a flow control valve will give you the best control of the process, since the flow rate can be easily
adjusted. The dial on the valve also gives you a visual indication if the flow rate has been changed. If the
valve clogs, it can be opened to clear the obstruction, and closed to the previous position.
If an orifice plate is used, you must install a valve downstream from the orifice in order to fine tune the flow
rate and provide additional back pressure in many applications.
Example: An 80 psi boiler has a Required Blowdown Rate of 383.33 lbs./hr. The maximum flow rate of the
smallest flow control valve is 3250 lbs./hr. 3250 x 0.25 = 812.5 which is too high for continuous sampling.
Using an orifice, the flow rate through the smallest diameter plate is 1275 lbs./hr.  This is too high for continu-
ous sampling.

5.  Determine the Orifice or Flow Control Valve Size for this Blowdown Rate
Use the following graphs to select a flow control device:

Flow Rate in Lbs/hr for Various Orifices

18000

16000

14000

12000

1/8 inch dia

10000
lbs/hr

3/16 inch dia

1/4 inch dia

8000 5/16 inch dia

6000

4000

2000

0
10 20 30 40 50 60 70 80 90 100 200 300
Pressure PSI

17
Skimmer Blowdown Line RECOMMENDED INSTALLATION
3/4" Min. up to Electrode INTERMITTENT SAMPLING

10 ft. max.
with minimal valves, elbows & unions

CONDUCTIVITY
ELECTRODE
Full Port Block Motorized Flow
Valve Ball Control
or Solenoid Valve or
¾" TEE Valve Orifice Union

2 ft. 1 to 3 ft.
minimum maximum

Manual Blowdown
(Normally Closed)
To Drain

TO
DRAIN

Install accessories
either vertically or
horizontally, per
manufacturer's
instructions.

Skimmer Blowdown Line Motorized Flow

3/4" Min. up to Electrode Ball Control
or Valve
Solenoid or Orifice
Valve Union

CONDUCTIVITY
ELECTRODE
Full Port Block Flow
Valve Control
Valve or
¾" TEE Orifice Union To Drain

Manual Blowdown
(Normally Closed)
To Drain

To Drain

RECOMMENDED INSTALLATION
CONTINUOUS SAMPLING

Figure 4 Typical Installation – Boiler

18
 Flow Control Valve
Maximum Flow Rates in Lbs/hr
25000

20000

15000
1/2" 150 PSI
lbs/hr

1/2" 300 PSI

3/4" 150 PSI
3/4" 300 PSI
10000

5000

0
20 30 40 50 60 70 80 90 100 150 200 300
Pressure PSI
3.4 Icon Definitions

Symbol Publication Description

IEC 417, No.5019 Protective Conductor Terminal

| IEC 417, No. 5007 On (Supply)

O IEC 417, No. 5008 Off (Supply)

ISO 3864, No. B.3.6 Caution, risk of electric shock

ISO 3864, No. B.3.1 Caution

19
3.5 Electrical installation
The various standard wiring options are shown in figure 5, below. Your controller will arrive from the factory pre-
wired or ready for hardwiring. Depending on your configuration of controller options, you may be required to hard-
wire some or all of the input/output devices. Refer to figures 6 through 19 for circuit board layout and wiring.
Note: when wiring the optional flow meter contactor input, the 4-20 mA outputs or a remote flow switch, it is advis-
able to use stranded, twisted, shielded pair wire between 22-26 AWG. Shield should be terminated at the controller at
the most convenient shield terminal.

CAUTION

1. There are live circuits inside the controller even when the power switch on the front panel is in the OFF posi-
tion! The front panel must never be opened before power to the controller is REMOVED!
If your controller is prewired, it is supplied with an 8 foot, 14 AWG power cord with NEMA 5-15P USA style
plug. A tool (#2 Phillips driver) is required to open the front panel.
2. When mounting the controller, make sure there is clear access to the disconnecting device!
3. The electrical installation of the controller must be done by trained personnel only and conform to all applica-
ble National, State and Local codes!
4. Proper grounding of this product is required. Any attempt to bypass the grounding will compromise the safety
of persons and property.
5. Operating this product in a manner not specified by Walchem may impair the protection provided by the equip-
ment.

Figure 5 Conduit Wiring

20
 Fixed Position Relay Boards
Expansion I/O &
Main Controller Ribbon Cable Auxiliary Power Board
WiFi Board Board & Display
I/O Slot 1
2 3 4

Relay Fuses
(only for models
with powered relays)

Battery
(BR2032) Relay Terminal Blocks

Power Supply

Neutral Terminal Block

AC Power
Terminal Block

Ethernet
I/O Board RJ45
Power Switch
Wiring Labels
Auxiliary System Fuse
Digital Input DC Power I/O Slot 1-4
Terminal Blocks Terminal Block Terminal Blocks
Earth Ground
Expansion I/O RS485 Terminal Block
Terminal Block

Flexible Relay Boards

Expansion I/O &
Main Controller Ribbon Cable Auxiliary Power Board
WiFi Board Board & Display
I/O Slot 1
2 3 4

Relay Fuses
(only for models
with powered relays)

Battery Flexible Relay Modules

(BR2032) Relay Terminal Blocks

Power Supply

Neutral Terminal Block

AC Power
Terminal Block

Ethernet
I/O Board RJ45
Power Switch
Wiring Labels
System Fuse
Digital Input Auxiliary I/O Slot 1-4
Terminal Blocks DC Power Terminal Blocks
Terminal Block
Earth Ground
Expansion I/O RS485 Terminal Block
Terminal Block

Figure 6 Parts Identification

21
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board Part Number
P/N 191910 SENSOR INPUT(2) I/O Board 1-4
TBxA - SENSOR 1
Terminal Blocks
TBxB - SENSOR 2
TB Ch ECOND CCOND pH/ORP DIS Channel 1 Contacting Conductivity (CCOND)
1 RCV+ 1
2 RCV– 2 (Wiring is typical of all three sensor options)
3 +5V 3
Conductivity
4 –5V 4 Electrode
XMT RED
5 XMT+ XMT 5 General Purpose
6 XMT– 6
7
1,2
RCV IN+ 7 RCV BLACK
8 R-SHLD IN– 8
9 TEMP+ TEMP+ TEMP+ 9
TEMP+ GRN
TEMP– WHT
10 TEMP– TEMP– TEMP– 10 High Pressure
11 X-SHLD SHIELD SHIELD
SHIELD
11
12 12 GRN WHT RED BLK
13-18

I/O Board Part Number

P/N 191910 SENSOR INPUT(2)
TBxA - SENSOR 1 Channel 2
TBxB - SENSOR 2
TB Ch ECOND CCOND pH/ORP DIS
1 RCV+ 1 RCV + RED
2
RCV – BLK
2 RCV–
3 +5V 3
4 –5V 4
Electrodeless Conductivity (ECOND)
5 XMT+ XMT 5 XMT + WHT
6 XMT– 6 XMT – BLK
1,2
7 RCV IN+ 7
8 R-SHLD IN– 8 R-SHLD
9 TEMP+ TEMP+ TEMP+ 9
TEMP + GRN
10 TEMP– TEMP– TEMP– 10
TEMP – BLK
X-SHLD
11 X-SHLD SHIELD SHIELD 11
12 12
13-18
Notes:
18 Identify P/N 191910 I/O Board and connect wires to the terminal blocks directly
below the I/O slot that the board is in.
Use the wiring label located on the front panel that has a matching I/O part number.
Either channel can support any of the sensor types listed.

Figure 7 Part Number 191910 Dual Sensor Board wiring - Conductivity

22
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

Terminal Blocks
I/O Board Part Number
P/N 191910 SENSOR INPUT(2)
TBxA - SENSOR 1
TBxB - SENSOR 2
TB Ch ECOND CCOND pH/ORP DIS
1 RCV+ 1
2 RCV– 2
3
+5V BLUE/WHITE
3 +5V
–5V WHITE/BLUE pH/ORP/ISE Sensor with
4
4 –5V Optional Temperature Compensation
5 XMT+ XMT 5
6 XMT– 6
7
1,2
RCV IN+ 7 IN+ ORANGE/WHITE
8 R-SHLD IN– 8
IN– WHITE/ORANGE
TEMP+ GREEN/WHITE
9 TEMP+ TEMP+ TEMP+ 9
TEMP– WHITE/GREEN
10 TEMP– TEMP– TEMP– 10
11 X-SHLD SHIELD SHIELD 11
SHIELD
12 12 Notes:
13-18
Identify P/N 191910 I/O Board and connect wires to the terminal blocks directly
I/O Board Part Number below the I/O slot that the board is in.
P/N 191910 SENSOR INPUT(2)
TBxA - SENSOR 1
Use the wiring label located on the front panel that has a matching I/O part number.
TBxB - SENSOR 2
Either channel can support any of the sensor types listed.
TB Ch ECOND CCOND pH/ORP DIS
1 RCV+ 1
2 RCV– 2
+5V BLUE/WHITE
3 +5V 3 pH/ORP/ISE Sensor without
4 –5V 4 –5V WHITE/BLUE Optional Temperature Compensation
5 XMT+ XMT 5
6 XMT– 6
7
1,2
RCV IN+ 7 IN+ ORANGE/WHITE
8 R-SHLD IN– 8 IN– WHITE/ORANGE
9 TEMP+ TEMP+ TEMP+ 9
10 TEMP– TEMP– TEMP– 10
11 X-SHLD SHIELD SHIELD 11 SHIELD
12 12
13-18 13
14
15
Shields

16
17
18

Figure 8 Part Number 191910 Dual Sensor Board Wiring - pH/ORP/ISE

23
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

Terminal Blocks
I/O Board Part Number
P/N 191910 SENSOR INPUT(2)
TBxA - SENSOR 1
TBxB - SENSOR 2
TB Ch ECOND CCOND pH/ORP DIS
1 RCV+ 1
2 RCV– 2
3 +5V 3
+5V RED Disinfection Sensor
4 –5V 4 -5V BLK
5 XMT+ XMT 5
6 XMT– 6
7
1,2
RCV IN+ 7 IN+ GRN
8 R-SHLD IN– 8 IN– WHT
9 TEMP+ TEMP+ TEMP+ 9
10 TEMP– TEMP– TEMP– 10
11 X-SHLD SHIELD SHIELD 11
SHIELD
12 12
13-18 Notes:
Identify P/N 191910 I/O Board and connect wires to the terminal blocks directly
I/O Board Part Number below the I/O slot that the board is in.
P/N 191910 SENSOR INPUT(2)
TBxA - SENSOR 1 Use the wiring label located on the front panel that has a matching I/O part number.
TBxB - SENSOR 2
TB Ch ECOND CCOND pH/ORP DIS Either channel can support any of the sensor types listed.
1 RCV+ 1
2 RCV– 2
3 +5V 3 +5V RED Disinfection Sensor
4 –5V 4 -5V BLK
5 XMT+ XMT 5
6 XMT– 6
7
1,2
RCV IN+ 7 IN+ GRN
8 R-SHLD IN– 8 IN– WHT
9 TEMP+ TEMP+ TEMP+ 9
10 TEMP– TEMP– TEMP– 10
11 X-SHLD SHIELD SHIELD 11 SHIELD
12 12
13-18 13
14
15
Shields

16
17
18

Figure 9 Part Number 191910 Dual Sensor Board Wiring - Disinfection

24
 I/O Boards 1 through 4
I/O Board P/N Auxiliary
Identification Labels VDC Power
Option Board

I/O Board wiring labels

I/O Board Part Number I/O Board 1-4

Auxiliary Terminal Blocks
P/N 191912 4-20 mA INPUT (2)
TBxA - INPUTS 1-2 VDC Power
TBxB - NOT USED Terminal Block
TB Ch
2 Wire 2 Wire
3 Wire 4 Wire UNPOWERED
Loop Pwrd
1 XMTR– XMTR– 1 2 WIRE
Channel 2 Channel 1

2 XMTR– XMTR+ XMTR+ XMTR+ 2 – LOOP POWERED

3
1
+24V +24V +24V 3 + TRANSMITTER
4 COM(–) 24V(–) 4 POWERED 2 WIRE
5 XMTR– XMTR– 5 –
6 XMTR– XMTR+ XMTR+ XMTR+ 6
+ 4-20mA SOURCE
2 •SIMULATOR
7 +24V +24V +24V 7
8 COM(–) 24V(–) 8 •POWERED 4-20mA
9 9 OUTPUT
10 10
11 11
12 12
13-18
1

13
14
Shields

15
I/O Board Part Number 16
P/N 191912 4-20 mA INPUT (2) 17
TBxA - INPUTS 1-2 18
TBxB - NOT USED
2 Wire 2 Wire
TB Ch 3 Wire 4 Wire
Loop Pwrd
1 XMTR– XMTR– 1
UNPOWERED
Channel 2 Channel 1

2 XMTR– XMTR+ XMTR+ XMTR+ 2 +SIGNAL 3 WIRE

1
3 24V POWER
3 +24V +24V +24V TRANSMITTER
4 COM(–) 24V(–) 4 – COMMON
5 XMTR– XMTR– 5
-SIGNAL
UNPOWERED
6 XMTR– XMTR+ XMTR+ XMTR+ 6
+SIGNAL Notes:
7
2
+24V +24V +24V 7
+24V POWER 4 WIRE TRANSMITTER
8 COM(–) 24V(–) 8 –24V POWER Identify P/N 191912 I/O Board and connect wires to
9 9 the terminal blocks directly below the I/O slot that
10 10 LITTLE DIPPER 2 the board is in.
11 11
BRN
12 12
13-18
ORN Use the wiring label located on the front panel that
1
RED has a matching I/O part number.
BLK
13 Either channel can support any of the sensor types
14 listed.
Shields

15 PYXIS ST-500
16 For 3-wire or 4-wire transmitters that require in
17 GRN excess of 1.5w, use an external power supply. Or
18 WHT install an auxiliary power board and connect power
RED wires to the Auxiliary VDC power terminal block. For
BLK
3-wire transmitters, a jumper wire between COM(-)
on the input board terminal block and PWR- on the
Auxiliary Power terminal block is required.
To program the analog input, go to the Inputs menu,
enter the menu for the I/O slot# and channel# (for
example S21). Scroll to Transmitter and select the
type of transmitter from the list.

Figure 10 Part Number 191912 Dual Analog (4-20mA) Sensor Input Board Wiring

25
 I/O Boards 1 through 4
I/O Board P/N Auxiliary
Identification Labels VDC Power
Option Board

I/O Board wiring labels

I/O Board 1-4

Auxiliary Terminal Blocks
I/O Board Part Number VDC Power
P/N 191913 4-20 mA INPUT (4) Terminal Block
TBxA - INPUTS 1-3
TBxB - INPUT 4
TB Ch
2 Wire 2 Wire
3 Wire 4 Wire UNPOWERED
Loop Pwrd
1 XMTR– XMTR– 1 2 WIRE
Channel 3 Channel 2 Channel 1

2 XMTR– XMTR+ XMTR+ XMTR+ 2

– LOOP POWERED
3
1,4
+24V +24V +24V 3 + TRANSMITTER
4 COM(–) 24V(–) 4 POWERED 2 WIRE
–
5 XMTR– XMTR– 5
+ 4-20mA SOURCE
6 XMTR– XMTR+ XMTR+ XMTR+ 6
2 •SIMULATOR
7 +24V +24V +24V 7
•POWERED 4-20mA
8 COM(–) 24V(–) 8
UNPOWERED OUTPUT
9 XMTR– XMTR– 9
+SIGNAL
10 XMTR– XMTR+ XMTR+ XMTR+ 10 3 WIRE
3 24V POWER
11 +24V +24V +24V 11
– COMMON TRANSMITTER
12 COM(–) 24V(–) 12
13-18
1

13
14
Shields

15
16
17
18
I/O Board Part Number Notes:
P/N 191913 4-20 mA INPUT (4)
TBxA - INPUTS 1-3
TBxB - INPUT 4 Identify P/N 191913 I/O Board and connect
TB Ch
2 Wire 2 Wire
3 Wire 4 Wire
wires to the terminal blocks directly below
Loop Pwrd
-SIGNAL
the I/O slot that the board is in.
1
Channel 4

1 XMTR– XMTR–
UNPOWERED
+SIGNAL
2 XMTR– XMTR+ XMTR+ XMTR+ 2 4 WIRE Use the wiring label located on the front
1,4 +24V POWER
3 +24V +24V +24V 3 TRANSMITTER
4 COM(–) 24V(–) 4 –24V POWER panel that has a matching I/O part number.
5 XMTR– XMTR– 5
6 XMTR– XMTR+ XMTR+ XMTR+ 6 LITTLE DIPPER 2 Either channel can support any of the sensor
types listed.
2
7 +24V +24V +24V 7 BRN
8 COM(–) 24V(–) 8 ORN
9 XMTR– XMTR– 9
RED For 3-wire or 4-wire transmitters that require
10
3
XMTR– XMTR+ XMTR+ XMTR+ 10
BLK in excess of 1.5w, use an external power
11
12
+24V +24V
COM(–)
+24V
24V(–)
11
12
supply. Or install an auxiliary power board
13-18 13
and connect power wires to the Auxiliary
PYXIS ST-500
14 VDC power terminal block. For 3-wire
transmitters, a jumper wire between COM(-)
Shields

15
GRN
16
WHT on the input board terminal block and PWR-
17
RED on the Auxiliary Power terminal block is
18
BLK required.
To program the analog input, go to the Inputs
menu, enter the menu for the I/O slot# and
channel# (for example S21). Scroll to
Transmitter and select the type of transmitter
from the list.

Figure 11 Part Number 191913 Four Analog (4-20mA) Sensor Input Board Wiring
26
 I/O Boards 1 through 4
I/O Board P/N Auxiliary
Identification Labels VDC Power
Option Board

I/O Board wiring labels

I/O Board 1-4

I/O Board Part Number Auxiliary Terminal Blocks
P/N 191914 4-20 mA INPUT (6)
VDC Power
TBxA - INPUTS 1-3 Terminal Block
TBxB - INPUTS 4-6
TB Ch
2 Wire 2 Wire
3 Wire 4 Wire UNPOWERED
Loop Pwrd
1 XMTR– XMTR– 1 2 WIRE
Channel 3 Channel 2 Channel 1

2 XMTR– XMTR+ XMTR+ XMTR+ 2

– LOOP POWERED
3
1,4
+24V +24V +24V 3 + TRANSMITTER
4 COM(–) 24V(–) 4 POWERED 2 WIRE
–
5 XMTR– XMTR– 5
+ 4-20mA SOURCE
6 XMTR– XMTR+ XMTR+ XMTR+ 6
2,5 •SIMULATOR
7 +24V +24V +24V 7
•POWERED 4-20mA
8 COM(–) 24V(–) 8
UNPOWERED OUTPUT
9 XMTR– XMTR– 9
+SIGNAL
10 XMTR– XMTR+ XMTR+ XMTR+ 10 3 WIRE
3,6 24V POWER
11 +24V +24V +24V 11
– COMMON TRANSMITTER
12 COM(–) 24V(–) 12
13-18
1

13
14
Shields

15
16
17
18

I/O Board Part Number

P/N 191914 4-20 mA INPUT (6)
TBxA - INPUTS 1-3 Notes:
TBxB - INPUTS 4-6
TB Ch
2 Wire 2 Wire
3 Wire 4 Wire Identify P/N 191914 I/O Board and connect wires
Loop Pwrd
1 -SIGNAL to the terminal blocks directly below the I/O slot
1 XMTR– XMTR– UNPOWERED
Channel 4

2 XMTR– XMTR+ XMTR+ XMTR+ 2

+SIGNAL
4 WIRE that the board is in.
1,4 +24V POWER
3 +24V +24V +24V 3
–24V POWER TRANSMITTER
4 COM(–) 24V(–) 4 Use the wiring label located on the front panel
5 XMTR– XMTR– 5 that has a matching I/O part number.
Channel 6 Channel 5

6 XMTR– XMTR+ XMTR+ XMTR+ 6 LITTLE DIPPER 2

2,5
7 +24V +24V +24V 7 BRN Either channel can support any of the sensor
8 COM(–) 24V(–) 8 ORN types listed.
9 XMTR– XMTR– 9 RED
10 BLK For 3-wire or 4-wire transmitters that require in
10 XMTR– XMTR+ XMTR+ XMTR+
3,6
11 +24V +24V +24V 11
12 COM(–) 24V(–) 12 excess of 1.5w, use an external power supply. Or
13-18 13 PYXIS ST-500 install an auxiliary power board and connect
14 power wires to the Auxiliary VDC power terminal
15 GRN block. For 3-wire transmitters, a jumper wire
between COM(-) on the input board terminal
Shields

16 WHT
17
RED block and PWR- on the Auxiliary Power terminal
18
BLK block is required.

To program the analog input, go to the Inputs

menu, enter the menu for the I/O slot# and
channel# (for example S21). Scroll to Transmitter
and select the type of transmitter from the list.

Figure 12 Part Number 191914 Six Analog (4-20mA) Sensor Input Board Wiring
27
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

Terminal Blocks
I/O Board Part Number
P/N 191915 4-20 mA OUTPUT (2)
TBxA - OUTPUTS 1-2
TBxB - NOT USED
4-20 mA
TB Ch
Output
1 1
2 2
3 3
4 4
5 5
–
Channel 2 Channel 1

6 OUT– 6 Chart Recorder,

Out
7
+
7
1
OUT+
SHIELD PLC, etc.
8 8
9 –
9
Out
OUT–
+ Chart Recorder,
10 OUT+ 10
2 SHIELD PLC, etc.
11 11
12 12
13-18

Notes:
Identify P/N 191915 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.
Use the wiring label located on the front panel that has a matching I/O part number.
Either channel can support any of the sensor types listed.
Each analog output is internally powered, 15 VDC, fully isolated.

Figure 13 Part Number 191915 Dual Analog (4-20mA) Output Wiring

28
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

I/O Board Part Number Terminal Blocks
P/N 191916 4-20 mA OUTPUT (4)
TBxA - OUTPUTS 1-2
TBxB - OUTPUTS 3-4
4-20 mA
TB Ch
Output
1 1
2 2
3 3
4 4
5 5
–
Channel 2 Channel 1

6 OUT– 6
Out + Chart Recorder,
7 OUT+ 7
1,3
SHIELD PLC, etc.
8 8
9 OUT– 9 –
Out + Chart Recorder,
10 OUT+ 10
11
2,4
SHIELD PLC, etc.
11
12 12
13-18

Notes:
Identify P/N 191916 I/O Board and connect wires to the terminal blocks directly
below the I/O slot that the board is in.

I/O Board Part Number Use the wiring label located on the front panel that has a matching I/O part
number.
P/N 191916 4-20 mA OUTPUT (4)
TBxA - OUTPUTS 1-2 Either channel can support any of the sensor types listed.
TBxB - OUTPUTS 3-4
TB Ch
4-20 mA
Output
Each analog output is internally powered, 15 VDC, fully isolated.
1 1
2 2
3 3
4 4
5 5
–
Channel 4 Channel 3

6 OUT– 6
Out + Chart Recorder,
7 OUT+ 7
1,3
SHIELD PLC, etc.
8 8
9 OUT– 9 –
Out + Chart Recorder,
10 OUT+ 10
11
2,4
SHIELD PLC, etc.
11
12 12
13-18 13
14
15
16
17

Figure 14 Part Number

18
191916 Four Analog (4-20mA) Output Wiring

29
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

I/O Board Part Number Terminal Blocks
P/N 191918 4-20 mA INPUT (2)/OUTPUT (4)
TBxA - INPUT 1, OUTPUTS 1-2
TBxB - INPUT 2, OUTPUTS 3-4
2 Wire 2 Wire 4-20 mA
TB Ch 3 Wire 4 Wire
Loop Pwrd Output
1 XMTR– XMTR– 1
Channel 1

2 XMTR– XMTR+ XMTR+ XMTR+ 2

See 191913 wiring instructions for details
Input

In
3 +24V +24V +24V 3
1,2
4 COM(–) 24V(–) 4
5 5
–
Channel 2 Channel 1

6 OUT– 6 Chart Recorder,

Output

Out
7
+
7
1,3
OUT+
SHIELD PLC, etc.
8 8
9 –
9 OUT–
+ Chart Recorder,
Output

Out
10
10
2,4
OUT+
SHIELD PLC, etc.
11 11
12 12
13-18

I/O Board Part Number

P/N 191918 4-20 mA INPUT (2)/OUTPUT (4)
TBxA - INPUT 1, OUTPUTS 1-2
TBxB - INPUT 2, OUTPUTS 3-4
2 Wire 2 Wire 4-20 mA
TB Ch 3 Wire 4 Wire
Loop Pwrd Output
1 XMTR– XMTR– 1
Channel 2

2 XMTR– XMTR+ XMTR+ XMTR+ 2

Input

3
In
+24V +24V +24V 3 See 191913 wiring instructions for details
1,2
4 COM(–) 24V(–) 4
5 5
6 –
Channel 4 Channel 3

6 OUT–
+ Chart Recorder,
Output

Out 7
7
1,3
OUT+
SHIELD PLC, etc.
8 8
9 –
9 OUT– + Chart Recorder,
Output

Out 10
10
2,4
OUT+
SHIELD PLC, etc.
11 11
12 12
13
13-18
14
15
16
17
18
Notes:
Identify P/N 191918 I/O Board and connect wires to the terminal blocks directly below the I/O slot that the board is in.
Use the wiring label located on the front panel that has a matching I/O part number.
Either channel can support any of the sensor types listed.
Each analog output is internally powered, 15 VDC, fully isolated.
To program the analog input, go to the Inputs menu, enter the menu for the I/O slot# and channel# (for example S21). Scroll to
Transmitter and select the type of transmitter from the list.

Figure 15 Part Number 191918 Dual Analog (4-20mA) Input + Four Analog (4-20mA) Output Wiring
30
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board Part Number I/O Board 1-4

Terminal Blocks
P/N 191920 CORROSION INPUT(2)
TBxA - SENSOR 1
TBxB - SENSOR 2
TB Ch CORROSION Channel 1
1 1
2 2
3 3
4 4
5 5
6 XMT (Red) 6
XMT RED
1,2
7 RCV (Green) 7 RCV GRN
8 MON RCV (Black) 8 MON RCV BLK
9 MON XMT (White)
9
MON XMT WHT
10
10
11
11
12
12
13-18 SHIELD

SHIELD

I/O Board Part Number

P/N 191920 CORROSION INPUT(2)
TBxA - SENSOR 1
TBxB - SENSOR 2
TB Ch CORROSION Channel 2
1 1
2 2
3 3
4 4
5 5
6 XMT (Red) 6 XMT RED
1,2
7 RCV (Green) 7 RCV GRN
8 MON RCV (Black) 8
MON RCV BLK
9 MON XMT (White) 9
MON XMT WHT
10 10
11 11
12 12
13-18 SHIELD

18 SHIELD
Notes:
Identify P/N 191920 I/O Board and connect wires to the terminal blocks
directly below the I/O slot that the board is in.
Use the wiring label located on the front panel that has a matching I/O part number.
Either channel can support any of the sensor types listed.

Figure 16 Part Number 191920 Dual Corrosion Sensor Input Board Wiring

31
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

Terminal Blocks

D1+ 1
D1– 2
D2+ 3 SIGNAL
D2– 4 IN –
12V 5 POWER +12V
D3+ 6
D3– 7
D4+ 8
FLOW SWITCH
D4– 9 Hall Effect Contact Closure:
FLOW METER Polarity not critical
12V 10
D5+ 11
Reed Switch
D5– 12 FLOW METER
Polarity not Critical

D6+ 1
D6– 2
12V 3
D7+ 4
D7– 5
D8+ 6
D8– 7
12V 8
D9+ 9
D9– 10
D10+ 11
D10– 12
12V 13
D11+ 14
D11– 15
D12+ 16
D12– 17
12V 18

TBDI

Figure 17 Digital Input Wiring

32
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

Terminal Blocks

Relay Model Code R1 R2 R3 R4 R5 R6 R7 R8

A or 0 Powered Powered Powered Powered Powered Powered Powered Powered
B or 1 Powered Powered Powered Powered Powered Powered Powered Dry
G or 2 Dry Dry Dry Dry Dry Dry Pulse Pulse
C or 3 Powered Powered Dry Dry Powered Powered Dry Dry
F or 4 Dry Dry Pulse Pulse Dry Dry Pulse Pulse
D or 5 Powered Powered Pulse Pulse Powered Powered Pulse Pulse
E or 6 Powered Powered Powered Powered Powered Powered Pulse Pulse
7 Dry Dry Dry Dry Dry Dry Dry Dry

GRN 120V If motorized

GRN/YEL 240V ball valve
NC Powered
WHT 120V
BLU 240V Relay
BLK 120V NO
Wiring
TB11 TB10 BRN 240 V

BLK 120V
WHT 120V
BLU 240V
BRN 240 V Dry
Fused Relay
External GRN 120V
GRN/YEL 240V Wiring
BLK WHT Power BLK 120V
BRN BLU Source BRN 240 V

TB9 + Pulse
L
N

External
Relay
AC Power
TB11 – Wiring

GRN
GRN/YEL

POWER SUPPLY
(100 TO 240V)

Figure 18 AC Power & Relay Output Wiring - Fixed Relay Options

33
 I/O Boards 1 through 4
I/O Board P/N
Identification Labels

I/O Board wiring labels

I/O Board 1-4

Terminal Blocks

Relay Model Code 8 or 9

Relay Module Code R1 R2 R3 R4
A or H Powered Powered Powered Powered
B Dry Dry Dry Dry
C or K Pulse Pulse Pulse Pulse
D or I Powered Powered Dry Dry
E or J Powered Powered Pulse Pulse
F or L Dry Dry Pulse Pulse
G Form C Form C Form C N/A

GRN 120V If motorized

GRN/YEL 240V ball valve
NC Powered
WHT 120V
BLU 240V
Relay
BLK 120V NO Wiring
TB11 TB10 BRN 240 V

BLK 120V
WHT 120V BRN 240 V Dry
Fused BLU 240V
GRN 120V
Relay
External
GRN/YEL 240V Wiring
BLK WHT Power BLK 120V
BRN BLU Source BRN 240 V

TB9 + Pulse
L
N

External
Relay
AC Power
TB11 – Wiring

GRN
GRN/YEL – ALARM

External Form C
POWER SUPPLY
DC Power + POWER Relay
(100 TO 240V) Wiring
– OK

Figure 19 AC Power & Relay Output Wiring - Field Configurable Relay Options
34
4.0 FUNCTION OVERVIEW

4.1 Front Panel

Figure 20 Front Panel

4.2 Touchscreen
A Home screen is displayed while the controller is on. Across the top of the screen are tabs for each major menu group:
Home, Inputs, Outputs, Graphs, HOA (Hand – Off – Auto output operation), Configuration, and Alarms. Touching the
tab brings up the menus associated with that group. Swiping left or right across the Home screen will bring up the next
group in that direction.

Below these tabs, this display shows user-defined fields containing input readings or status of outputs. Touching any of
these fields on the Home Screen will bring up the item’s Details Screen, where you can access calibration and setting
menus or graph that parameter. If more than one page of items is selected to be displayed on the Home screen, it will
automatically scroll between them, or swiping up or down manually moves to the next page. A yellow bar on the right
will indicate if multiple pages are available and where the current page is relative to the others.

4.3 Icons
The following icons appear on the Home screen. Touch the icon to get to the menu selections.

Alarm Menu

Inputs Menu

Outputs Menu

35
 Configuration Menu

HOA Menu

Graph Menu

Home Page

Filter

Other icons may appear in the menu screens.

Calibration icon appears in sensor input menus and brings up the calibration menu

Graph icon appears in Input menus and brings up the Graphs menu showing that input

Edit icon appears in Input and Output details menus and allows the editing of settings

Information icon appears in Input and Output menus in place of the Edit icon and is used to
leave edit mode and return to viewing information related to that Input or Output.

Close icon closes a menu and returns to the previous menu

Confirm icon saves changes and returns to the previous menu

Filter icon is used in menus to limit the choices displayed when selecting items from a list

Character Delete icon erases part of an alphanumeric entry

Shift icon is used for upper-case characters

Double Arrow icons appear in Graphs menu and move the time frame of the graph

Calendar icon appears in Graphs menu and brings up the Time Range settings

Dim and Bright icons appear in Display Settings menu

Split icons appear in Edit Home Screen Layout and are used to change a larger cell into two
smaller ones

Merge icons appear in Edit Home Screen Layout and are used to change two smaller cells into
one larger one

36
 Move Up or Down icons appear in Edit Home Screen Layout and are used to move a parame-
ter up and down in it’s position on the screen
Delete icon appears in Edit Home Screen Layout and is used to delete all contents in that
section of the Home screen <task_delete>

Return icon appears in Output menu HOA Setting and returns to the list of settings for that
output. <nav_back>

Overview of the use of icons

Changing Numeric Values
To change a number, use the Character Delete icon to the digit to be changed. If the new number will be neg-
ative, start with touching the minus sign, then use the numeric touchpad and decimal point to type the number
(some entries must be integers and the decimal will be ignored and the setting rounded to the nearest integer).
Once the value of the number is correct touch the Confirm icon to store the new value into memory, or touch the
Close icon to leave the number at its previous value and go back.
Changing Names
To change the name used to identify an input or output, use the QWERTY keypad. Upper case and lower case
letter, numbers, a blank space, period, and symbols are available. Touching a key and sliding up will enter the
character in the upper corner of the key, or bring up that character with its possible accents, if applicable. Double
tapping the shift key acts as a caps lock. Once the word is correct, use the Enter icon to store the new value into
memory, or use the Close icon to leave the word at its previous value and go back.
Choosing from a List
Selecting the type of sensor, the units of measure of an input, or the control mode used for an output, the selec-
tion is picked from a list of available options. Swipe if necessary to find the desired option, and then touch the
option to highlight it. Touch the Confirm icon to store the new option into memory, or touch the Close icon to
leave the selection at its previous value and go back.
The Filter icon may be used to limit the items displayed in the list. Touch the Filter icon to bring up the types of
I/O that may be filtered and then touch any that should be filtered out. Most common is to filter out “Unassigned
Channels”. Touch the Confirm icon to filter the list or Cancel to show all channels.
Hand-Off-Auto Relay Mode
Touch the desired relay mode. In Hand mode the relay is forced on for a specified amount of time and when that
time is up the relay returns to its previous mode, in Off mode the relay is always off until taken out of Off mode,
and in Auto mode the relay is responding to control set points. Touch the Return icon to go back to the relay
settings.
Interlock and Activate with Channels Menus
To select which digital inputs or relays will interlock this relay (Interlock Channels), or which digital inputs or
relays will force this relay on (Activate with Channels), touch the input or relay number(s). The background of
the selected item will turn dark. When finished selecting as many as needed, touch the Confirm icon to accept the
changes or the Close icon to leave the selections at the previous settings and go back.

4.4 Startup
Initial Startup
After having mounted the enclosure and wired the unit, the controller is ready to be started. Plug in the controller
and turn on the power switch to supply power to the unit. The display will briefly show the logo and then revert to
the Home display. Refer to section 5 below for more details on each of the settings.

To return Home, Close any active menu and touch the Home tab on the top of the screen.

37
Config Menu (see section 5.4)
Choose language
Touch the Configuration tab on the top of the Home screen. Touch Global Settings. Swipe up or down until the
English word “Language” is displayed and then touch it. Swipe up or down until your language is displayed and
touch it. Touch the Confirm icon to change all menus to your language.
Set date (if necessary)
In the Global Setting menu, swipe up or down until Date is displayed, and then touch it. Highlight the Day, and
then use the numeric touchpad to change the date. Touch the Confirm icon to accept the change.
Set time (if necessary)
In the Global Setting menu, swipe up or down until Time is displayed and then touch it. Highlight the digit to
change, then use the numeric touchpad to change the time. Touch the Confirm icon to accept the change.
Set global units of measure
In the Global Setting menu, swipe up or down until Global Units is displayed and then touch it. Touch the de-
sired units. Touch the Confirm icon to accept the change.
Set temperature units of measure
In the Global Setting menu, swipe up or down until Temp Units is displayed and then touch it. Touch the desired
units. Touch the Confirm icon to accept the change.
Close the Global Settings menu. Touch the Inputs tab.

Inputs (see section 5.2)

Program the settings for each input
A list of all available inputs will be displayed. Touch the S11 Input to get to the Details screen. Touch the Edit
icon. If the name of the sensor does not describe the type of sensor connected, swipe up or down until Type is
displayed. Touch the Type field. Swipe up or down until the correct type of sensor is displayed, then touch it to
highlight it. Touch the Confirm icon to accept the change. This will bring you back to the Details screen. Touch
the Edit icon and finish the rest of the S11 settings. For disinfections sensors, choose the exact sensor in the
Sensor menu. For contacting conductivity sensors, enter the cell constant. Select the units of measure. Enter the
alarm set points and alarm deadband. Set the default temperature that will be used for automatic temperature
compensation if the temperature signal becomes invalid.
When finished with S11, touch the Close icon until the list of inputs is displayed. Repeat the process for each
input.

The S12 temperature input Element should be set correctly once the S11 sensor type has been set. If not, select
the correct temperature element and set the alarm set points and alarm deadband. Generic, ORP and disinfection
sensors do not have temperature signals and are preset to Unassigned.
To calibrate the temperature, return to the S12 Details screen, touch the Calibrate icon, and touch the Enter icon
to perform a calibration. If either input card is a Dual Analog Input card (4-20mA signal), then select the type of
sensor that will be connected. Select Fluorometer if a Little Dipper 2 will be connected. Select AI Monitor if the
device can be calibrated on its own and the Intuition-9™ calibration will only be in units of mA. Select Transmit-
ter if the device connected cannot be calibrated on its own and the Intuition-9™ will need to be used to calibrate
in engineering units of measure.

If a flow switch or liquid level switch is connected, D1 through D12 (whichever one has the device connected
to it) should be set to DI State type (if no switch is connected, select No Sensor). Set the state that will possibly
interlock control outputs (refer to the Outputs settings to program which outputs, if any, will be interlocked by
the switch). Set the state, if any, that will result in an alarm.

If a contacting head or paddlewheel flow meter is connected, D1 through D12 (whichever one has the device
connected to it) should be set to that type (if no flow meter is connected, select No Sensor). Set the units of mea-
sure, volume/contact or K factor, etc.

38
 Calibrate the sensor
To calibrate the sensor, return to the list of inputs, touch the sensor to calibrate, touch the Calibrate icon, and
select one of the calibration routines. For disinfection and Generic sensors, start with the Zero Calibration. For
electrodeless conductivity, start with the Air Calibration. Refer to section 5.2.
Touch the Main Menu icon. Touch the Outputs icon.

Outputs (see section 5.3)

Program the settings for each output
A list of all available outputs will be displayed. Touch the relay to program first to get to the Details screen.
Touch the Edit icon. If the name of the relay does not describe the control mode desired, swipe up or down until
the Mode menu is displayed. Touch the Mode menu. Swipe up or down until the correct control mode is dis-
played and touch it. This will bring you back to the Details screen.Touch the Edit icon and finish the rest of the
output’s settings.

If you want the output to be interlocked by a flow switch or by another output being active, enter the Interlock
Channels menu and select the input or output channel that will interlock this output.
The default is for the output to be in Off mode, where the output does not react to the settings. Once all settings
for that output are complete, enter the HOA Setting menu and change it to Auto.
Repeat for each output.

Home Screen Setup (see section 5.4.9)

Once the controller has been programmed for the intended purpose, the parameters that are displayed on the
Home screen, their size, and position can be customized. The default is to display the first two sensor inputs on
the left side of the first page and the status of eight relays on the right side, with nothing on the optional second
or third page.

From the Configuration tab, touch Display Settings, and then Edit Home Screen Layout. Touch the parameter
name to change the parameter shown. Touch the Split icons to make two smaller cards from one larger card, or
touch the Merge icons to make two smaller cards into one larger one. Select the parameter to be shown in each
card. Swipe to the next page and add more cards if desired. Use the delete icon to remove everything from that
half-screen display panel. Use the Move Up or Down icons to move the entire display panel up or down.

Touch the Confirm icon to save the changes or Close to cancel the setting changes.

Normal Startup
Startup is a simple process once your set points are in memory. Simply check your supply of chemicals, turn on
the controller, calibrate it if necessary and it will start controlling.

4.5 Shut Down

To shut the controller down, simply turn off the power. Programming remains in memory. It is important that the pH/
ORP electrode and disinfection sensors remain wet. If the shutdown is expected for any longer than a day, and it is
possible for the electrode to dry out, remove the electrode from the tee and store it in pH 4 buffer or cooling tower
water. Take care to avoid freezing temperatures when storing the pH/ORP electrodes to avoid breakage of the glass.

39
5.0 OPERATION using the touchscreen
These units control continuously while power is applied. Programming is accomplished either via the touchscreen or
the optional Ethernet connection. See section 6.0 for Ethernet instructions.
To view the readings of each sensor, or whatever user-defined list of parameters that has been set, touch the Home
icon if not already there. The menus for each of these parameters may be accessed directly by touching the parameter.
Keep in mind that even while browsing through menus, the unit is still controlling.

The menu structure is grouped by alarms, inputs and outputs, graphs and HOA. Under the Configuration menu will be
general settings such as the clock, the language, etc. that do not have an input or output associated with it. Each input has
its own menu for calibration and unit selection as needed. Each output has its own setup menu including set points, timer
values and operating modes as needed.Each output has its own setup menu including set points, timer values and operat-
ing modes as needed.

40
 MAIN MENU / HOME SCREEN OVERVIEW
INPUTS
Home Inputs Outputs Graphs HOA Config
Ccond (S11) Temp (S12) HOME SCREEN (example)
1000 50.5 Home Inputs Outputs Graphs HOA Config
µS/cm °F
Cond (S13) Temp (S14)
Ccond (S11)
On/Off (R1) On ●
1000
1000 50.5 Flow Timer (R2) Off ○
µS/cm
µS/cm °F
pH (S21) Temp (S22)
Temp (S12)
Bio Timer (R3) Off ○
8.95 80.1 50.5
°F °F Time Prop (R4) Off ○
Unassigned (S23) Unassigned (S24) pH (S21)
Boolean Logic (R5) Off ○
8.95
Probe Wash (R6) Off ○
Temp (S22)
Pulse Prop (R7) Off ○
List of Possible Inputs 80.1
Contacting Conductivity Flow Meter, Paddlewheel type °F Alarm Output (R8) Off ○
Electrodeless Conductivity Feed Monitor
Temperature Counter
pH Remote Modbus DI State CONFIG
ORP DI Counter
Home Inputs Outputs Graphs HOA Config
Disinfection Calculation Virtual Input
Generic Redundant Sensor Virtual Input Global Settings Security Settings
Transmitter/AI Monitor Raw Value Virtual Input
Tank Level Disturbance Virtual Input Ethernet Settings Ethernet Details
Fluorometer Remote Modbus Virtual Input
Flowmeter, Analog Type Corrosion Rate WiFi Settings Wifi Details
DI State Corrosion Imbalance
Flow Meter, Contactor type Email Report Settings Display Settings
File Utilities Controller Details
OUTPUTS
Home Inputs Outputs Graphs HOA Config HOA
On/Off (R1) Flow Timer (R2)
Home Inputs Outputs Graphs HOA Config
On Off On/Off (R1) Hand Off Auto

Bio Timer (R3) Time Prop (R4) Flow Timer (R2) Hand Off Auto

Bio Timer (R3) Hand Off Auto

Off Off
Time Prop (R4) Hand Off Auto
Boolean Logic (R5) Probe Wash (R6)
Boolean Logic (R5) Hand Off Auto
Off Off
Probe Wash (R6) Hand Off Auto
Pulse Prop (R7) Alarm Output (R8)

Off Off GRAPHS

Home Inputs Outputs Graphs HOA Config
List of Possible Outputs pH (S21) On/Off (R1) Cond (S11)
On/Off control mode Probe Wash control mode
On/Off Disturbance control mode Spike control mode
Flow Timer control mode Lag Output control mode
Bleed & Feed control mode PPM Volume
Percent Timer control mode Flow Meter Ratio control mode
Biocide Timer control mode Volumetric Blend control mode
Alarm Output mode Counter Timer
Time Proportional control mode Boolean Logic
Pulse Proportional control mode Dual Switch
Pulse Proportional Disturbance Analog Output, Retransmit mode
control mode Analog Output, Proportional
Intermittent Sampling mode control mode 1 Week
Manual control mode Analog Ouput, Manual mode
PID control mode Analog Output, Disturbance Mode
Dual Setpoint mode Graph Settings
Timer control mode Graph Settings
Time Range
Left Sensor 30 Minutes
ALARMS (List of Active Alarms) Low Axis Limit 1 Hour
Home Inputs Outputs Graphs HOA Config High Access Limit 2 Hours
DI / Relay 4 Hours
Temp (S12) Sensor Fault Additional Settings:
8 Hours
Right Sensor Additional Settings:
Low Axis Limit
1 Day

High Axis Limit 2 1/2 Days
Time Range 5 Days
1 Week
41 2 Weeks
4 Weeks
INPUTS
Home Inputs Outputs Graphs HOA Config
Ccond (S11) Temp (S12) List of Possible Inputs
Contacting Conductivity Flow Meter, Paddlewheel type
1000 50.5 Electrodeless Conductivity Feed Monitor
µS/cm °F Temperature Counter
pH Remote Modbus DI State
Cond (S13) Temp (S14)
ORP DI Counter
1000 50.5 Disinfection Calculation Virtual Input
µS/cm °F Generic Redundant Sensor Virtual Input
Transmitter/AI Monitor Raw Value Virtual Input
pH (S21) Temp (S22)
Tank Level Disturbance Virtual Input
8.95 80.1 Fluorometer Remote Modbus Virtual Input
°F Flowmeter, Analog Type Corrosion Rate
DI State Corrosion Imbalance
Unassigned (S23) Unassigned (S24)
Flow Meter, Contactor type

Contacting Conductivity (S11) Additional Input Details: Additional Calibration Options:

Contacting Conductivity (S11)
Two-Point Buffer Calibration
24-Hour Minimum Maximum and Averages
(pH/ORP inputs only)
1000 µS/cm Calibration Gain and Offset 1000 µS/cm Three-Point Buffer Calibration
Last Calibration
Alarms (pH/ORP inputs only)
Type One-Point Process Calibration
Status One-Point Buffer Calibration One-Point Analog Calibration
Sensor Board
Raw Value Open Air Calibration (Conductivity inputs only) (4-20 mA inputs only)
Temperature Zero Calibration (Disinfection inputs only) Two-Point Analog Calibration
(4-20 mA inputs only)
etc. Details Screen Content varies with sensor type

Additional Settings for Disinfection Sensor:

Contacting Cond (S11-43) Additional Settings for Contacting Coductivity: Disinfection (S11-43) Deadband Cable Length
Temp Comp Factor Units Reset Calibration Values Gauge
1000 µS/cm Cell Constant Name 2.0 ppm Cal Required Alarm Name
Cable Length Type Alarm & Datalog Sup- Sensor
LoLo Alarm Gauge LoLo Alarm
Low Alarm pression Type
Low Alarm
High Alarm Smoothing Factor
High Alarm
HiHi Alarm HiHi Alarm

Additional Settings for Electrodeless Conductivity: Generic (S11-S43) Additional Settings for Generic Sensor:
Electrodeless Cond (S11-43)
Deadband Cable Length
Deadband Temp Compensation
Reset Calibration Values Gauge
1000 µS/cm Reset Calibration Values Temp Comp Factor 20.0 ppm
Cal Required Alarm Units
Cal Required Alarm Cell Constant
LoLo Alarm LoLo Alarm Alarm & Datalog Suppression Electrode
Alarm & Datalog Cable Length
Low Alarm Low Alarm Smoothing Factor (Linear or Ion
Suppression Gauge
High Alarm High Alarm Sensor Slope Selective)
Smoothing Factor Units
HiHi Alarm HiHi Alarm Sensor Offset Name
Default Temp Name
Low / High Range Type
Installation Factor Type
Range

Additional Settings: Transmitter / AI Monitor (S11-S46) Additional Settings for Transmitter and AI Monitor:
Temperature (S11-43)
Deadband Deadband Transmitter
Reset Calibration Values Smoothing Factor Reset Calibration Values 4 mA Value
20 ºC 100%
Cal Required Alarm Name Cal Required Alarm 20 mA Value
LoLo Alarm Alarm & Datalog Element LoLo Alarm Alarm & Datalog Units
Low Alarm Suppression Low Alarm Suppression Name
High Alarm High Alarm Smoothing Factor Type
HiHi Alarm HiHi Alarm

pH (S11-43) Additional Settings for pH Sensor: Tank Level (S11-S46) Additional Settings for Tank Level:
Deadband Default Temp Deadband Empty At
Reset Calibration Values Cable Length Reset Calibration Full At
7.00 55 gal
Cal Required Alarm Gauge Values Smoothing Factor
LoLo Alarm Alarm & Datalog Electrode LoLo Alarm Alarm & Datalog Transmitter
Low Alarm Suppression Name Low Alarm Suppression Name
High Alarm Smoothing Factor Type High Alarm Units Type
HiHi Alarm Buffers (pH only) HiHi Alarm Tank Capacity

ORP (S11-43) Additional Settings for ORP Sensor: Fluorometer (S11-S46) Additional Settings for Fluorometer:
Deadband Cable Length Deadband Smoothing Factor
500 mV Reset Calibration Values Gauge Reset Calibration Transmitter
Cal Required Alarm Name 20 ppm
Values Max Sensor Range
LoLo Alarm Alarm & Datalog Sup- Type Cal Required Alarm Dye / Product Ratio
LoLo Alarm
Low Alarm pression Low Alarm Alarm & Datalog Name
High Alarm Smoothing Factor High Alarm Suppression Type
HiHi Alarm
HiHi Alarm

42
INPUTS
Flowmeter (S11-S46) Additional Settings for Flowmeter:
Deadband Transmitter
Reset Flow Total Flow Units
5 l/min Set Flow Total Rates Units
LoLo Alarm Scheduled Reset Flowmeter Max
Low Alarm Reset Calibration Valves Input Filter
High Alarm Cal Required Alarm Name
HiHi Alarm Alarm & Datalog Suppression Type
Smoothing Factor

Additional Settings for Corrosion:

Corrosion (S11-S41)
Deadband Cal Required Alarm
Replace Corrosion Electrode Smoothing Factor
1.2 mpy Stabilization Time Cycle Time
LoLo Alarm Electrode Alarm Range
Low Alarm Alarm & Datalog Suppression Units
High Alarm Reset Calibration Name
HiHi Alarm Values Type

Additional Settings for Imbalance:

Imbalance (S12-S42)
Deadband Name
Alarm & Datalog Suppression Type
5.0 Reset Calibration Values
Cal Required Alarm
LoLo Alarm
Low Alarm
High Alarm
HiHi Alarm

43
DIGITAL INPUTS VIRTUAL INPUTS
Additional Settings for DI State: Additional Settings for Calculation:
DI State (D1-D12) Calculation (V1-V16)
Open Message Total Time Deadband Alarm & Datalog
Closed Message Reset Time Total Input Suppression
No Flow 1000 µS/cm
Interlock Name Constant Low Range
Alarm Type LoLo Alarm Input 2 High Range
LoLo Alarm
Alarm & Datalog Suppression Low Alarm Constant 2 Smoothing Factor
Low Alarm
High Alarm Calculation Mode Name
High Alarm
HiHi Alarm Type
HiHi Alarm

Contactor Type
Flowmeter (D1-D12) Additional Settings for Contactor, Flowmeter: Redundant (V1-V16) Additional Settings for Redundant:
Totalizer Alarm Volume/Contact Deviation Alarm Input
Reset Flow Total Flow Units Deadband Input 2
100 gal 1000 µS/cm
Set Flow Total Name Alarm & Datalog Name
LoLo Alarm Scheduled Reset Type LoLo Alarm Suppression Type
Low Alarm Alarm & Datalog Low Alarm Mode
High Alarm Suppression High Alarm
HiHi Alarm HiHi Alarm

Paddlewheel Type
Flowmeter (D1-D12) Additional Settings for Paddlewheel, Flowmeter: Raw Value (V1-V16) Additional Settings for Raw Value:
Deadband K Factor Deadband
Alarm & Datalog Flow Units Alarm & Datalog Suppression
100 g/m 1000 µS/cm
Suppression Rate Units Input
LoLo Alarm Set Flow Total Smoothing Factor LoLo Alarm Smoothing Factor
Low Alarm Totalizer Alarm Name Low Alarm Name
High Alarm Reset Flow Total Type High Alarm Type
HiHi Alarm HiHi Alarm

Feed Monitor (D1-D12) Additional Settings for Feed Monitor: Disturbance Input (V1-V16) Additional Settings for Disturbance:
Totalizer Alarm Reprime Time Min Disturbance Disable Disturbance
1.0 gal Reset Flow Total Volume/Contact Max Disturbance Channels
1000 µS/cm
Set Flow Total Flow Units Value at Min Disturbance Disturbance Input
LoLo Alarm Scheduled Reset Rate Units LoLo Alarm Value at Max Disturbance Name
Low Alarm Total Alarm Mode Smoothing Factor Low Alarm Smoothing Factor Typ
High Alarm Flow Alarm Mode Output High Alarm
HiHi Alarm Flow Alarm Delay Name HiHi Alarm
Flow Alarm Clear Type
Deadband

Only if HVAC mode is disabled

DI Counter (D1-D12) Additional Settings for DI Counter: Additional Settings for Remote ModBus:
Remote ModBus (V1-V16)
Deadband Units Deadband Function
1000 Alarm & Datalog Rate Units Alarm & Datalog Remote Register
Suppression Units per Pulse 1000 µS/cm Suppression Data Type
LoLo Alarm Totalizer Alarm Smoothing Factor LoLo Alarm Low Range Update Period
Low Alarm Reset Total Name Low Alarm High Range Timeout Alarm Delay
High Alarm Set Total Type High Alarm Modbus Mode Name
HiHi Alarm Scheduled Reset HiHi Alarm Remote Device IP Units
Data Port Type
Reply Timeout

Remote Modbus (D1-D12) Additional Settings for Remote Modbus:

Open Message Remote Register
Closed Message Data Type
Open Interlock Update Period
LoLo Alarm Alarm Timeout Alarm Delay
Low Alarm Modbus Mode Total Time
High Alarm Remote Device IP Reset Time Total
HiHi Alarm Data Port Alarm Suppression
Reply Timeout Name
Function Type

44
OUTPUTS
Home Inputs Outputs Graphs HOA Config List of Possible Outputs
On/Off (R1) Flow Timer (R2) On/Off control mode Timer control mode
On/Off Disturbance control mode Probe Wash control mode
Flow Timer control mode Spike control mode
On Off Bleed & Feed control mode Lag Output control mode
Percent Timer control mode Mass Balance PPM Volume
Bio Timer (R3) Time Prop (R4) Biocide Timer control mode Flow Meter Ratio control mode
Alarm Output mode Volumetric Blend control mode
Off Off Time Proportional control mode Counter Timer
Pulse Mass Balance Boolean Logic
Boolean Logic (R5) Probe Wash (R6) Pulse Proportional control mode Dual Switch
Pulse Proportional Disturbance control mode Analog Output, Retransmit mode
Intermittent Sampling mode Analog Output, Proportional control mode
Off Off Manual control mode Analog Ouput, Manual mode
PID control mode Analog Output, Disturbance Mode
Pulse Prop (R7) Alarm Output (R8) Dual Setpoint mode

Off Off

On/Off (R1) Additional Input Details:

Alarms
Off Input Value
Mode
Status Relay Type
Time On
24 hour time
Total Time

etc. Details Screen Content varies with output type

RELAY OUTPUTS & VIRTUAL (CONTROL) OUTPUTS

On/Off (R1-R8) Additional settings for On/Off Mode:
Duty Cycle Activate with Channels
Off On Delay Time Minimum Relay Cycle
Off Delay Time Hand Time Limit
HOA Setting Daily Max Time Reset Time Total
Setpoint Output Time Limit Input
Deadband Reset Output Timeout Direction
Duty Cycle Period Interlock Channels Name
Mode

Flow Timer (R1-R8) Additional Settings for Flow Timer Mode:

Daily Max Time Hand Time Limit
Output Time Limit Reset Time Total
Off
Reset Output Timeout Flow Input
HOA Setting Interlock Channels Flow Input 2
Feed Duration Name
Activate with Channels
Accumulated Volume Mode
Minimum Relay Cycle
Reset Timer

45
 RELAY OUTPUTS & VIRTUAL (CONTROL) OUTPUTS
Only if HVAC mode is enabled Not available for virtual outputs
Swipe to additional settings for Additional settings for Lag Control Mode:
Bleed & Feed (R1-R12, C1-C16) Lag Control (R1-R12)
Bleed & Feed Mode: Activation Mode* Activate with Channels
Interlock Channels Reset Time Total Set Point Min Relay Cycle
Off Activate with Channels Bleed Off Set Point 2 Hand Time Limit
Minimum Relay Cycle Name Deadband Reset Time Total
HOA Setting Mode HOA Setting Delay Time*
Hand Time Limit Lead Name
Feed Time Limit Output Time Limit
Wear Leveling* Mode
Daily Max Time Reset Output Timeout
Reset Output Timeout Wear Cycle Time* Interlock Channels
* See section 5.3.18

Only if HVAC mode is enabled

Bleed then Feed (R1-R12, C1-C16) Additional settings for Bleed then Feed Mode: Additional settings for Target PPM Control Mode:
Target PPM (R1-R12, C1-C16)
Daily Max Time Hand Time Limit Specific Gravity Min Relay Cycle
Output Time Limit Reset Time Total Accumulator Volume Hand Time Limit
Of Reset Output Timeout Bleed Off Reset Timer Reset Time Total
Interlock Channels Name Daily Max Time Flow Input
HOA Setting HOA Setting Output Time Limit Flow Input 2
Activate with Channels Mode
Feed Percentage Target Reset Output Timeout Cycles Input
Minimum Relay Cycle
Feed Time Limit Pump Capacity Interlock Channels Low Cycles Limit
Reset Timer Pump Setting Activate with Channels Name
Mode

Not available for virtual outputs

Additional settings for PPM Volume Mode:
Percent Timer (R1-R12, C1-C16) Additional settings for Percent Timer Mode: PPM Volume (R1-R12)
Reset Timer Reset Time Total
Reset Output Timeout Hand Time Limit Daily Max Time Flow Input
Off Interlock Channels Reset Time Total Off Output Time Limit Flow Input 2
Activate with Channels Name Reset Output Timeout Cycles Input
HOA Setting Minimum Relay Cycle Mode HOA Setting
Interlock Channels Low Cycles Limit
Sample Period Target Activate with Channels Name
Feed Percentage Specific Gravity Minimum Relay Cycle Mode
Output Time Limit Accumulator Volume Hand Time Limit

Only if HVAC mode is enabled Only if Pulse Relay Type

Additional settings for Flow Prop Control Mode:
Biocide Timer (R1-R12, C1-C16) Additional settings for Biocide Timer Mode: Flow Prop (R1-R12, C1-C16)
Specific Gravity Reset Time Total
Bleed Activate with Channels Maximum Rate Flow Input
Off Prebleed Time Minimum Relay Cycle Off Output Time Limit Cycles Input
Prebleed To Hand Time Limit Reset Output Timeout Low Cycles Limit
HOA Setting Cond Input Reset Time Total HOA Setting Interlock Channels Name
Event 1 (through 10) Bleed Lockout Name Target Activate with Channels Mode
Repetition Add Last Missed Mode Pump Capacity Hand Time Limit
Week Interlock Channels Pump Setting
Day
Start Time
Duration

Only if HVAC is disabled

Alarm (R1-R12, C1-C16) Additional settings for Alarm Mode: Counter Timer (R1-R12, C1-C16) Additional settings for Counter Timer Mode:
Select Alarms Hand Time Limit Daily Max Time Hand Time Limit
Output Reset Time Total Output Time Limit Reset Time Total
Off Off
Interlock Channels Name Reset Output Timeout Input
HOA Setting Activate with Channels Mode HOA Setting Interlock Channels Name
Alarm Mode Minimum Relay Cycle Feed Duration Activate with Channels Mode
On Delay Time Accumulator Setpoint Minimum Relay Cycle
Off Delay Time Reset Time

Additional settings for Boolean Logic Mode:

Time Prop (R1-R12, C1-C16) Additional settings for Time Prop Mode: Boolean Logic (R1-R12, C1-C16)
Input 2 Interlock Channels
Daily Max Time Hand Time Limit Activate Activate with Channels
Off Output Time Limit Reset Time Total Off On Delay Time Hand Time Limit
Reset Output Timeout Input Off Delay Time Min Relay Cycle
Direction HOA Setting
HOA Setting Interlock Channels Daily Max Time Reset Time Total
Name Operation Output Time Limit Name
Set Point Activate with Channels
Mode Input 1 Reset Output Timeout Mode
Proportional Band Minimum Relay Cycle
Activate Alarm
Sample Period

Only if HVAC mode is enabled

Int. Sampling (R1-R12, C1-C16) Additional settings for Intermittent Sampling Mode: On/Off Dis (R1-R12, C1-C16) Additional settings for On/Off Disturbance Mode:
Sample Time Min Relay Cycle Duty Cycle Minimum Relay Cycle
Hold Time Hand Time Limit On Delay Time Hand Time Limit
Off Maximum Blowdown Off Off Delay Time Reset Time Total
Reset Time Total
Wait Time Cond Input Daily Max Time Input
HOA Setting Output Time Limit HOA Setting
Trap Sample Output Time Limit Direction
Set Point Reset Output Timeout Setpoint Reset Output Timeout Disturbance Input
Proportional Band Interlock Channels Name Deadband
Mode Interlock Channels Name
Deadband Activate with Channels Duty Cycle Period Activate with Channels Mode

46
RELAY OUTPUTS & VIRTUAL (CONTROL) OUTPUTS
Manual (R1-R12, C1-C16) Additional settings for Manual Mode: Spike Control (R1-R12, C1-C16) Additional settings for Spike Control Mode:
Reset Output Timeout Name Onset Time Reset Output Timeout
Interlock Channels Mode Duty Cycle Period Interlock Channels
Off Off
Minimum Relay Cycle Duty Cycle Activate With Channels
HOA Setting Hand Time Limit HOA Setting Event 1 (through 6) Min Relay Cycle
On Delay Time Reset Time Total Set point Repetition Hand Time Limit
Off Delay Time Spike Setpoint Week Reset Time Total
Output Time Limit Deadband Day Input
Start Time Direction
Duration Name
Daily Max Time Mode
Output Time Limit
Only if Pulse Relay Type
Pulse Prop (R1-R12, C1-C16) Additional settings for Pulse Prop Mode: Vol Blend (R1-R8) Additional settings for Vol Blend Mode:
Maximum Rate Reset Time Total Daily Max TimeOutput Hand Time Limit
Off Interlock Channels Input Time Limit Reset Time Total
Activate with Channels Direction Off
Reset Output Timeout Flow Input
HOA Setting Minimum Relay Cycle Name Interlock Channels Disturbance Input
Hand Time Limit Mod HOA Setting
Set Point Accumulator Volume Activate with Channels Name
Proportional Band Minimum Relay Cycle Mode
Blend Volume
Minimum/Maximum Output Reset Timer

Only if HVAC mode is disabled | Only if Pulse Relay Type

PID Control (R1-R12, C1-C16) Additional settings for PID Control Mode: Flow Meter Ratio (R1-R8) Additional settings for Flow Meter Ratio:
Integral Time Gain Form Daily Max Time Makeup Meter
Integral Gain Output Time Limit
Off Derivative Time Reset Output Timeout Off Output Time Limit Makeup Meter 2
Derivative Gain Interlock Channels Reset Output Timeout Bleed Meter
HOA Setting Reset PID Integral Activate with Chan- HOA Setting Interlock Channels Bleed Meter 2
Set Point Minimum Output nels Accumulator Volume Activate with Channels Disturbance Input
Gain Maximum Output Minimum Relay Cycle Bleed Volume Minimum Relay Cycle Name
Maximum Rate Hand Time Limit Reset Timer Hand Time Limit Mode
Proportional Band Input Reset Time Total Reset Time Total
Direction Name
Input Minimum Mode
Input Maximum

Only if Pulse Relay type

Dual Setpoint (R1-R12, C1-C16) Additional settings for Dual Setpoint Mode: Disturbance (R1-R8) Additional settings for Disturbance:
Duty Cycle Period Minimum Relay Cycle Min Output Primary Output
Duty Cycle Hand Time Limit Max Output Disturbance Input
Off On Delay Time Reset Time Total Off Interlock Channels Trigger Input
Off Delay Time Input Activate with Activated
HOA Setting HOA Setting
Output Time Limit Direction Channels Trigger Mode
Set Point Reset Time Total
Reset Output Timeout Name Hand Output Name
Set Point 2 Interlock Channels Mode Output Time Limit
Deadband Hand Time Limit Mode
Activate with Channels Reset Output Timeout Max Rate

Only if HVAC mode is disabled

Timer Control (R1-R12, C1-C16) Additional settings for Timer Control Mode: Dual Switch (R1-R8) Additional settings for Dual Switch Mode:
Week Interlock Channels Off Switch Interlock Channels
Day Activate with Channels Activate O Activate with Channels
Off Minimum Relay Cycle Off Off Delay Time Min Relay Cycle
Events Per Day
Start Time Hand Time Limit Hand Time Limit Reset Time Total
HOA Setting HOA Setting
Reset Time Total Daily Max Time Name
Event 1 (through 10) Duration On Switch
Name Output Time Limit Mode
Repetition Add Last Missed Mode Activate On Reset Output Timeout
Hourly Output Time Limit On Delay Time
Reset Output Timeout

Probe Wash (R1-R12, C1-C16) Additional settings for Probe Wash Mode:
Week Hold Time
Day Interlock Channels
Off Activate with Channels
Events Per Day
HOA Setting Start Time Minimum Relay Cycle
Event 1 (through 10) Hand Time Limit
Duration
Reset Time Total
Repetition Input Name
Hourly Input 2 Mode
Sensor Mode

47
ANALOG OUTPUTS & VIRTUAL (CONTROL) OUTPUTS
Not available for virtual outputs
Retransmit (A11-A44, C1-C16) Additional settings for Retransmit Mode:
Error Output
Reset Time Total
Off
Input
HOA Setting Name
4 mA Value Mode
20 mA Value
Hand Output

Prop Control (A11-A44, C1-C16) Additional settings for Proportional Control Mode:
Max Output Total
Off Output Time Limit Off Mode Output
Reset Output Timeout Error Output
HOA Setting Interlock Channels Input
Set Point Activate with Channels Direction
Proportional Band Hand Output Name
Min Output Hand Time LimitReset Time Mode

PID Control (A11-A44, C1-C16) Additional settings for PID Control Mode:
Integral Time Hand Output
Integral Gain Hand Time Limit
Off Derivative Time O Mode Output
HOA Setting Derivative Gain Error Output
Reset PID Integral Reset Time Total
Set Point
Min Output Input
Gain
Max Output Direction
Proportional Gain Max Rate Input Minimum
Output Time Limit Input Maximum
Reset Output Timeout Gain Form
Interlock Channels Name
Activate with Channels Mode

Disturbance (A11-A44, C1-C16) Additional settings for Disturbance:

Min Output Primary Output
Max Output Disturbance Input
Off Interlock Channels Trigger Input
Activate with Channels Activated
HOA Setting
Hand Output Trigger Mode
Reset Time Total
Hand Time Limit Name
Output Time Limit Off Mode Output Mode
Reset Output Timeout Error Output

Not available for virtual outputs

Manual Control (A11-A44) Additional settings for Manual Control Mode:
Hand Time Limit Name
Off Reset Time Total Mode

HOA Setting
Interlock Channels
Activate with Channels
Minimum Relay Cycle

Flow Prop (A11-A44, C1-C16) Additional settings for Flow Prop Control Mode:
Specific Gravity Error Output
Output Time Limit Reset Time Total
Off Reset Output Timeout Flow Input
HOA Setting Interlock Channels Cycles Input
Activate with Channels Low Cycles Limit
Target
Hand Output Name
Pump Rating
Hand Time Limit Mode
Pump Setting Off Mode Output

Not available for virtual outputs

Lag Output (A11-A44) Additional settings for Lag Output Mode:
Reset Output Timeout
Wear Leveling
Off
Wear Cycle Time
HOA Setting Name
Lead Mode
Reset Time Total
Output Time Limit

48
CONFIG MENU

Home Inputs Outputs Graphs HOA Config Swipe for addional settings for WiFi Settings:
WiFi Settings
DHCP Setting Ad-Hoc Key
Global Settings Security Settings Controller IP Address SSID Broadcast
Network Netmask TCP Timeout
Ethernet Settings Ethernet Details Network Gateway Temporary Ad-Hoc
WiFi Mode
DNS Server Begin/End Temporary
SSID Ad-Hoc SSID Ad-Hoc Mode
WiFi Settings Wifi Details Key Ad-Hoc Security Ad-Hoc Time Limit
Gateway Connection
Email Report Settings Display Settings

File Utilities Controller Details

WiFi Details Swipe for addional settings for WiFi Details:
WiFi Status Network Gateway
Signal Strength Security Protocol
RSSI DNS Server
Alarms WiFi Channel BSSID/MAC
Last Fluent Data DHCP Status Address
Last Fluent Config Controller IP FCC ID
Live Connect Status Address IC ID
Global Settings Swipe to additional settings for Global Settings: Network Netmask
Global Units
Temperature Units
Date Alarm Delay
Time HVAC Modes
Name Language Remote Communications Swipe for addional settings for
Location Remote Communications:

Device ID
Comm Status Network
Data Format
Data Port
Verbose Logging
Display Settings Swipe to additional settings for Display Settings:
Auto Dim Time
Key Beep
File Utilities Swipe for addional settings for File Utilities:
Edit Home Screen Layout
Splash Protection Export System Log
Export User Config File
Activate Splash Protection
Import User Config File
Adjust Display Repair Network File System
File Transfer Status
Data Log Export Restore Default Config
Periodic Log Export Software Upgrade
Security Settings Export Event Log

Controller Log Out Controller Details Swipe for addional settings for Controller Details:
Security Software Version Battery Power
Local Password Power Board Processor Temp
Relay Board #1-3 Controller Temp 1
Controller Sensor Board #1 Controller Temp 2
Product Name Software Version Relay Board Temp
Serial Number Sensor Board #2 Network Temp
Ethernet Settings Swipe for addional settings for Ethernet Settings: Software Version Processor Temp
Last Data Log
Network Netmask TCP Timeout Sensor Board #3 I/O Card 1 Temp
Network Gateway Fluent Status Software Version I/O Card 2 Temp
DNS Server LiveConnect Status Sensor Board #4 I/O Card 3 Temp
Webserver Update Period Software Version I/O Card 4 Temp
Ethernet Status Last Data Log Network Temp
Web Page Color Scheme Reply Timeout
Gateway Connection Digital Inputs DI Temp
Fluent Alarm Delay
DHCP Setting Software Version +12 Volt Supply
Controller IP Address Auxiliary Power Board +5 Volt Supply
Network +3.3 Volt Supply
WiFi Board LCD Bias Voltage
Software Version LCD Supply
Ethernet Details Swipe for addional settings for Ethernet Details: Auxilliary Power Board
Network Gateway
DNS Server
Webserver
Alarms MAC Address
DHCP Status Last Fluent Data
Controller IP Address Last Fluent Config
Network Netmask

Email Report Settings Swipe for addional settings for Email Report Settings:
SMTP Port Day (Datalog/Summary
From Address Reports/Graph)
ASMTP Username Day of Month (Datalog/
Report #1 through #4 ASMTP Password Summary Reports/Graph)
Email Adresses Test Report Recipients Report Time (Datalog/
Send Email Test Report Summary Reports/Graph)
Email Server
Report #1-4 Settings: Log Frequency (Datalog
SMTP Server Report Type Report)
Email Recipients Alarm Mode (Alarms Report)
Repetition (Datalog/Summary Select Alarms (Alarms Report)
Reports/Graph) Alarm Delay (Alarms Report)
Reports Per Day (Datalog/ Attach Summary (Alarms
Summary Reports/Graph) Report

49
5.1 Alarms Menu
If there is a red icon with a number in it in the upper right corner of the screen, there are that many active alarms.
Touch the icon to view a list of active alarms. If there are more than four active alarms, scroll up or down to see the
next page. A yellow rectangle on the lower right will indicate if there is more than one page and the current position in
the pages.
Touch the Home icon to go back to the previous screen.

5.2 Inputs Menu

Touch the Inputs icon to view a list of all sensor and digital inputs. Swipe up and down the list of inputs, A yellow
rectangle on the lower right will indicate if there is more than one page and the current position in the pages.

Touch the input to access that input’s details, calibration (if applicable) and settings.

Sensor Input Details

The details for any type of sensor input include the current value read, alarms, the raw (uncalibrated) signal, the sensor
type, the 24-hour minimum, maximum and average values, and the calibration gain and offset and date of last cali-
bration. If the sensor has automatic temperature compensation, then the sensor’s temperature value and alarms, the
temperature resistance value read, and the type of temperature element required are also displayed under a separate
sensor input menu.

Calibration
Touch the Calibration icon to calibrate the sensor. Select the calibration to perform: One Point Process, One Point
Buffer or Two Point Buffer Calibration. Not all calibration options are available for all types of sensor.

One Point Process Calibration

New Value
Enter the actual value of the process as determined by another meter or laboratory analysis and touch Confirm.
Cal Successful or Failed
If successful, touch Confirm to put the new calibration in memory.
If failed, you may retry the calibration or cancel. Refer to Section 8 to troubleshoot a calibration failure.

One Point Buffer Calibration, Disinfection/Generic Sensor Zero Cal, Conductivity Air Cal
Cal Disables Control
Touch Confirm to continue or Cancel to abort
Buffer Temperature (only appears if no temperature sensor is detected for sensor types that use automatic tem-
perature compensation)
Enter the temperature of the buffer and touch Confirm.
Buffer Value (only appears for One Point Calibration except when automatic buffer recognition is used))
Enter the value of the buffer being used
Rinse Sensor
Remove the sensor from the process, rinse it off, and place it in the buffer solution (or oxidizer-free water for
Zero Cal, or air for the conductivity open air cal). Touch Confirm when ready.
Stabilization
When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move
to the next step. If they don’t stabilize you may manually go to the next step by pressing Confirm.

50
 Cal Successful or Failed
If successful, touch Confirm to put the new calibration in memory.
If failed, you may retry the calibration or cancel. Refer to Section 8 to troubleshoot a calibration failure.
Resume Control
Replace the sensor in the process and touch Confirm when ready to resume control.

Two Point Buffer Calibration

Cal Disables Control
Touch Confirm to continue or Cancel to abort
Buffer Temperature (only appears if no temperature sensor is detected for sensor types that use automatic
temperature compensation)
Enter the temperature of the buffer and touch Confirm.

First Buffer Value (does not appear if automatic buffer recognition is used)
Enter the value of the buffer being used
Rinse Sensor
Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Confirm when ready.
Stabilization
When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move
to the next step. If they don’t stabilize you may manually go to the next step by touching Confirm.
Second Buffer Temperature (only appears if no temperature sensor is detected for sensor types that use auto-
matic temperature compensation)
Enter the temperature of the buffer and press Confirm.
Second Buffer Value (does not appear if automatic buffer recognition is used )
Enter the value of the buffer being used
Rinse Electrode
Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Confirm when ready.
Stabilization
When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move
to the next step. If they don’t stabilize you may manually go to the next step by touching Confirm.
Cal Successful or Failed
If successful, touch Confirm to put the new calibration in memory. The calibration adjusts the offset and the gain
(slope) and displays the new values. If failed, you may retry the calibration or cancel. Refer to Section 8 to
troubleshoot a calibration failure.
Resume Control
Replace the sensor in the process and touch Confirm when ready to resume control.

Three Point Buffer Calibration (pH sensors only)

Cal Disables Control
Touch Confirm to continue or Cancel to abort
Buffer Temperature (only appears if no temperature sensor is detected)
Enter the temperature of the buffer and touch Confirm.
First Buffer Value (does not appear if automatic buffer recognition is used)
Enter the value of the buffer being used
Rinse Sensor
Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Confirm when ready.

51
 Stabilization
When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move to
the next step. If they don’t stabilize you may manually go to the next step by touching Confirm.
Second Buffer Temperature (only appears if no temperature sensor is detected)
Enter the temperature of the buffer and touch Confirm.
Second Buffer Value (does not appear if automatic buffer recognition is used)
Enter the value of the buffer being used
Rinse Electrode
Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Confirm when ready.
Stabilization
When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move to
the next step. If they don’t stabilize you may manually go to the next step by touching Confirm.
Third Buffer Temperature (only appears if no temperature sensor is detected)
Enter the temperature of the buffer and touch Confirm.
Third Buffer Value (does not appear if automatic buffer recognition is used)
Enter the value of the buffer being used
Rinse Electrode
Remove the sensor from the process, rinse it off, and place it in the buffer solution. Touch Confirm when ready.
Stabilization
When the temperature (if applicable) and signal from the sensor is stable, the controller will automatically move to
the next step.
Cal Successful or Failed
If successful, touch Confirm to put the new calibration in memory. The calibration adjusts the offset, gain (slope)
and calibration midpoint and displays the new values. If failed, you may retry the calibration or cancel. Refer to
Section 7 to troubleshoot a calibration failure.
Resume Control
Replace the sensor in the process and touch Confirm when ready to resume control.

One Point Analog Calibration

OK to disable control? Touch Confirm to continue or Cancel to abort.
Input Value
Enter the mA value that the transmitter will be sending. Touch Confirm to continue or Cancel to abort.
Please set input signal to specified value
Make sure that the transmitter is sending the desired mA signal. Touch Confirm to continue or Cancel to abort.
Automatic circuit calibration in progress
Cal Successful or Failed
If successful, touch Confirm to save calibration results. The calculated offset will be displayed.
If failed, you may retry the calibration or cancel. You may also restore calibration to the factory defaults. The
calibration will fail if the measured mA is more than 2 mA away from the Input Value entered.
Please restore input signal to process value
Put the transmitter back into normal measurement mode if necessary and touch Confirm when ready to resume control.

Two Point Analog Calibration

OK to disable control? Touch Confirm to continue or Cancel to abort.
Input Value
Enter the mA value that the transmitter will be sending. Touch Confirm to continue or Cancel to abort.

52
 Please set input signal to specified value
Make sure that the transmitter is sending the desired mA signal. Touch Confirm to continue or Cancel to abort.
Automatic circuit calibration in progress
Second Input Value
Enter the mA value that the transmitter will be sending. Touch Confirm to continue or Cancel to abort.
Please set input signal to specified value
Make sure that the transmitter is sending the desired mA signal. Touch Confirm to continue or Cancel to abort.
Automatic circuit calibration in progress
Cal Successful or Failed
If successful, touch Confirm to save calibration results. The calculated offset and gain will be displayed.
If failed, you may retry the calibration or cancel. You may also restore calibration to the factory defaults. The
calibration will fail if the offset is more than 2 mA or the gain is not between 0.5 and 2.0.
Please restore input signal to process value
Put the transmitter back into normal measurement mode if necessary and touch Confirm when ready to resume control.

5.2.1 Contacting Conductivity

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 3000, and the
deadband is 10, the alarm will activate at 3001 and deactivate at 2990.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Default Temp If the temperature signal is lost at any time, then the controller will use the Default
Temp setting for temperature compensation.
Cable Length The controller automatically compensates for errors in the reading caused by varying
the length of the cable.
Gauge The cable length compensation depends upon the gauge of wire used to extend the cable
Cell Constant Enter the cell constant of the sensor that is connected to the input.
Temp Compensation Select between the standard NaCl temperature compensation method or a linear %/
degree C method.
Temp Comp Factor This menu only appears if Linear Temp Comp is selected. Change the %/degree C to
match the chemistry being measured. Standard water is 2%.
Units Select the units of measure for the conductivity.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

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5.2.2 Electrodeless Conductivity
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 3000, and the
deadband is 10, the alarm will activate at 3000 and deactivate at 2990.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Default Temp If the temperature signal is lost at any time, then the controller will use the Default
Temp setting for temperature compensation.
Installation Factor Do not change unless instructed by the factory.
Cable Length The controller automatically compensates for errors in the reading caused by varying
the length of the cable.
Gauge The cable length compensation depends upon the gauge of wire used to extend the cable
Cell Constant Do not change unless instructed by the factory. The Walchem sensor is 6.286. Sensors
made by others are not supported.
Range Select the range of conductivity that best matches the conditions the sensor will see.
Temp Compensation Select between the standard NaCl temperature compensation method or a linear %/
degree C method.
Temp Comp Factor This menu only appears if Linear Temp Comp is selected. Change the %/degree C to
match the chemistry being measured. Standard water is 2%.
Units Select the units of measure for the conductivity.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

5.2.3 Temperature
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 100, and the
deadband is 1, the alarm will activate at 100 and deactivate at 99.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.

54
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Name The name used to identify the sensor may be changed.
Element Select the specific type of temperature sensor to be connected.

5.2.4 pH
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 9.50, and the
deadband is 0.05, the alarm will activate at 9.51 and deactivate at 9.45.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Buffers Select if calibration buffers will be manually entered, or if they will be
automatically detected, and if so, which set of buffers will be used. The choices are
Manual Entry, JIS/NIST Standard, DIN Technical, or Traceable 4/7/10.
Default Temp If the temperature signal is lost at any time, then the controller will use the Default
Temp setting for temperature compensation.
Cable Length The controller automatically compensates for errors in the reading caused by vary-
ing the length of the cable.
Gauge The cable length compensation depends upon the gauge of wire used to extend the cable
Electrode Select Glass for a standard pH electrode, or Antimony. Antimony pH electrodes
have a default slope of 49 mV/pH and an offset of -320 mV at pH 7.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

5.2.5 ORP
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 800, and the
deadband is 10, the alarm will activate at 801 and deactivate at 790.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
55
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Cable Length The controller automatically compensates for errors in the reading caused by
varying the length of the cable.
Gauge The cable length compensation depends upon the gauge of wire used to extend the cable
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

5.2.6 Disinfection
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the
deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Cable Length The controller automatically compensates for errors in the reading caused by
varying the length of the cable.
Gauge The cable length compensation depends upon the gauge of wire used to extend the cable
Name The name used to identify the sensor may be changed.
Sensor Select the specific type and range of disinfection sensor to be connected.
Type Select the type of sensor to be connected.

5.2.7 Generic Sensor

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the
deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Sensor Slope Enter the slope of sensor in mV/Units (if Electrode selection is Linear) or mV/De-
cade (if Electrode selection is Ion Selective).

56
Sensor Offset Only appears if the Electrode selection is Linear. Enter the offset of the sensor in
mV if 0 mV is not equal to 0 units. For Ion Selective Electrodes, the Sensor
Offset is not calculated until the first calibration is performed, and the sensor
will read Zero until a calibration has been successfully completed!
Low Range Enter the low end of the range of the sensor
High Range Enter the high end of the range of the sensor
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Cable Length The controller automatically compensates for errors in the reading caused by
varying the length of the cable.
Gauge The cable length compensation depends upon the gauge of wire used to extend the cable
Units Type in the units of measure for the input, for example, ppm.
Electrode Select the type of electrode to be connected. Select Linear if the sensor slope is a
linear voltage per Units. Select Ion Selective if the electrode voltage output is loga-
rithmic, defined as “mV/decade”.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

5.2.8 Corrosion Input

ONLY AVAILABLE IF A CORROSION INPUT BOARD IS INSTALLED
Input Details
The details for this type of input include the current corrosion rate, alarms, status, current stage in the measurement
cycle, the elapsed time in the current cycle, the raw (uncalibrated) corrosion rate, the number of days in service of
the electrodes, the calibration offset, the date of last calibration, and the type of input.

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 10, and the
deadband is 0.1, the alarm will activate at 10.01 and deactivate at 9.9.
Replace Corrosion Elec- Used to reset the timers for both the “Electrode Alarm” and the “Stabilization
trode Time”.
Stabilization time Provides a control lock-out during the initial period of high readings when the
electrode is changed. Set to 0 hours to disable.
Electrode Alarm Set a reminder, in days, for when to replace the electrode tips.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular
schedule, enter the number of days between calibrations. Set it to 0 if no reminders
are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.

57
 Alloy Multiplier Enter the multiplier that matches the metallurgy of the electrodes connected to the
sensor. Refer to the chart below.
Cycle Time Select the length of the cycle time to be used. The longer cycle times provide more
accurate readings but decrease the speed of response.
Range Select the expected range of the corrosion rate.
Units Select the units of measure for the corrosion.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

Alloy Multipliers
These values are based on using standard corrosion electrodes with 5 cm2 surface area.
Material Multiplier UNS Code
Carbon Steel 1.00 K03005
Copper 110 ETP 2.00 C11000
Admiralty Brass 1.67 C44300
Aluminum 1100 0.94 A91100
Aluminum 2024 0.88 A92024
Phosphorized Admiralty 1.68 C44500
Brass
Aluminum Silicon Bronze 1.48 C64200
Aluminum Brass 1.62 C68700
Copper/Nickel 90/10 1.80 C70610
Copper/Nickel 70/30 1.50 C71500
AISI 4130 Alloy Steel 1.00 G41300
Lead 2.57 L50045
Monel 400 Nickel 1.13 N04400
Monel K500 Nickel 1.04 N05500
Hastelloy C22 0.85 N06022
Inconel 600 Nickel 0.95 N06600
Incoloy Alloy 20 0.98 N08020
Incoloy Alloy 800 0.89 N08800
Incoloy Alloy 825 0.88 N08825
Hastelloy C276 0.86 N10276
Titanium Grade 2 0.75 R50400
304 Stainless Steel 0.89 S30400
316 Stainless Steel 0.90 S31600
2205 Duplex Stainless Steel 0.89 S31803
2507 Super Duplex 0.88 S32750
Stainless Steel
Zinc 1.29 Z17001

5.2.9 Corrosion Imbalance Input

ONLY AVAILABLE IF A CORROSION INPUT BOARD IS INSTALLED
Input Details
The details for this type of input include the current corrosion imbalance value, alarms, status, current stage in the

58
measurement cycle, the elapsed time in the current cycle, the ratio of the current imbalance value to the current
corrosion rate, the calibration offset, the date of last calibration, and the type of input.

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 10, and the deadband
is 0.1, the alarm will activate at 10.01 and deactivate at 9.9.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are neces-
sary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

5.2.10 Transmitter Input and AI Monitor Input

Select AI monitor if the device connected can be calibrated on its own and the Intuition-9™ calibration will only
be in units of mA. Select Transmitter if the device connected cannot be calibrated on its own and the Intuition-9™
will be used to calibrate in engineering units of measure.
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the
deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Transmitter Select the type of transmitter connected (2-wire loop powered, 2-wire self-powered,
3-wire, or 4-wire).
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
4 mA Value Enter the value that corresponds to a 4 mA output signal from the transmitter.
20 mA Value Enter the value that corresponds to a 20 mA output signal from the transmitter.
Units Select the units of measure for the transmitter.
Name The name used to identify the transmitter may be changed.
Type Select the type of sensor to be connected. The choice of AI Monitor and Transmitter
is only available if a 4-20mA type sensor card is installed.

59
5.2.11 Fluorometer Input
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the
deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Transmitter Select the type of transmitter connected (2-wire loop powered, 2-wire self-powered,
3-wire, or 4-wire).
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule, enter
the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Max Sensor Range Enter the value of the ppb of dye at which the sensor transmits 20 mA.
Dye/Product Ratio Enter the value for the ratio of ppb of dye to ppm of inhibitor that is in the inhibitor
product being fed.
Name The name used to identify the transmitter may be changed.
Type Select the type of sensor to be connected. The choice of Analog Input is only avail-
able if that type of sensor card is installed.

5.2.12 Analog Flowmeter Input

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the dead-
band is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Totalizer Alarm Enter the high limit on the total volume of water accumulated above which an
alarm will be activated.
Reset Flow Total Enter this menu to reset the accumulated flow total to 0. Touch Confirm to accept,
Cancel to leave the total at the previous value and go back.
Set Flow Total This menu is used to set the total volume stored in the controller to match the regis-
ter on the flow meter. Enter the desired value.
Scheduled Reset Choose to automatically reset the flow total, and if so, Daily, Monthly or Annually.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Cal Required Alarm To get an alarm message as a reminder to calibrate the sensor on a regular schedule,
enter the number of days between calibrations. Set it to 0 if no reminders are necessary.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.

60
Transmitter Select the type of transmitter connected (2-wire loop powered, 2-wire self-pow-
ered, 3-wire, or 4-wire).
Flow Units Select the units of measure for the water volume, between gallons, liters, cubic
meters and million of gallons (MG).
Rate Units Select the units of measure for the flow rate time base.
Flowmeter Max Enter the flow rate at which the meter outputs a 20 mA signal.
Input Filter Enter the mA below which the flow rate will considered 0. Typically any meter output
below 4.02 mA is actually 0 flow.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected.

5.2.13 Analog Tank Level Input

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the
deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Reset Calibration Values Enter this menu to reset the sensor calibration back to factory defaults.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Units Enter the units of measure for the transmitter.
Tank Capacity Enter the capacity of the tank when full in the units of measure entered above.
Empty At Enter the mA output of the level sensor when the tank is empty.
Full At Enter the mA output of the level sensor when the tank is full.
Smoothing Factor Increase the smoothing factor percentage to dampen the re-sponse to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Transmitter Select the type of transmitter connected (2-wire loop powered, 2-wire
self-powered, 3-wire, or 4-wire.
Name The name used to identify the transmitter may be changed.
Type Select the type of sensor to be connected.

5.2.14 DI State
Input Details
The details for this type of input include the current state with a custom message for open versus closed, alarms,
the status of the interlock, and the current type of input setting.
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Open Message The words used to describe the switch state may be customized.
Closed Message The words used to describe the switch state may be customized.
Interlock Choose whether the input should be in the interlocked state when the switch is either
open or closed.
Alarm Choose if an alarm should be generated when the switch is open, or closed, or if no
alarm should ever be generated.

61
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Total Time Choose to totalize the amount of time that the switch has been open or closed. This will
be displayed on the input details screen.
Reset Total Time Enter this menu to reset the accumulated time to zero. Touch Confirm to accept, Cancel
to leave the total at the previous value and go back.
Name The name used to identify the switch may be changed.
Type Select the type of sensor to be connected to the digital input channel.

5.2.15 Flow Meter, Contactor Type

Input Details
The details for this type of input include the total volume accumulated through the flow meter, alarms, and the current
type of input setting.
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low and High Alarm limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 100, and the deadband
is 1, the alarm will activate at 100 and deactivate at 99
Totalizer Alarm Enter the high limit on the total volume of water accumulated above which an alarm
will be activated.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input will be
Suppression suppressed if the selected relay or digital input is active. At the same time, all datalogs
and graphs containing the input will show no data for the duration of the activation.
Reset Flow Total Enter this menu to reset the accumulated flow total to 0. Touch Confirm to accept,
Cancel to leave the total at the previous value and go back.
Set Flow Total This menu is used to set the total volume stored in the controller to match the register
on the flow meter. Enter the desired value.
Scheduled Reset Choose to automatically reset the flow total, and if so, Daily, Monthly or Annually.
Volume/Contact Enter the volume of water that needs to go through the flow meter in order to generate a
contact closure.
Flow Units Select the units of measure for the water volume.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected to the digital input channel.

5.2.16 Flow Meter, Paddlewheel Type

Input Details
The details for this type of input include the current flow rate, total volume accumulated through the flow meter,
alarms, and the current type of input setting.
Settings
Touch the Edit icon to view or change the settings related to the sensor.
Alarms Low and High Alarm limits may be set.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input will be
Suppression suppressed if the selected relay or digital input is active. At the same time, all datalogs
and graphs containing the input will show no data for the duration of the activation.

62
Deadband This is the Alarm Deadband. For example, if the High Alarm is 100, and the deadband
is 1, the alarm will activate at 100 and deactivate at 99.
Totalizer Alarm Enter the high limit on the total volume of water accumulated above which an alarm
will be activated.
Reset Flow Total Enter this menu to reset the accumulated flow total to 0. Touch Confirm to accept,
Cancel to leave the total at the previous value and go back.
Set Flow Total This menu is used to set the total volume stored in the controller to match the register
on the flow meter. Enter the desired value.
Scheduled Reset Choose to automatically reset the flow total, and if so, Daily, Monthly or Annually.
K Factor Enter the pulses generated by the paddlewheel per unit volume of water.
Flow Units Select the units of measure for the water volume.
Rate Units Select the units of measure for the flow rate time base.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an aver-
age of 10% of the previous value and 90% of the current value.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected to the digital input channel.

5.2.17 Feed Monitor

The Feed Monitor Digital Input type performs the following functions:
• Monitors a pulse signal from a pump (Iwaki PosiFlow, Tacmina Flow Checker, LMI Digital Pulse, etc)
• Totalizes the chemical feed and calculates the current flow rate
• Activates a Total Alarm if the feed exceeds a specified limit
• Activates a Flow verify alarm if the control output is ON and the feed monitor does not record any pulses
within a specified period of time.
Each Feed Monitor input can be linked to any type of output channel (powered relay, dry contact relay, solid state
relay, or analog 4-20 mA) to validate chemical feed from any type of pump.

Total Alarm
The Intuition-9™ monitors the total feed and activates a Total Alarm if the value exceeds the Totalizer Alarm set
point. When used in conjunction with Scheduled Reset selections (Daily, Monthly, or Annually), this alarm can be
used to alert users to situations where excess chemical product is used and/or to discontinue chemical feed if the
amount exceeds the set point during the specified time period.
While a Total Alarm is active, the linked pump will be controlled based on the Total Alarm Mode setting:
Interlock The output will be OFF while the alarm is active.
Maintain The alarm condition has no effect on output control.

Flow Verify Alarm

The Intuition-9™ monitors the status or current percent output of the channel linked to the feed monitor to deter-
mine if a Flow Verify alarm should be activated.
The Flow Alarm Delay setting (MM:SS) contains the time to trigger the alarm if the output is activated and no
pulses are registered. To avoid nuisance alarms at very low flow rates, if the linked output is a solid state relay (set
with a pulse proportional or PID control mode) or an analog 4-20 mA output, the alarm will only be activated if no
input pulses are monitored while the output is set to greater than a specified Dead Band (%).
The Flow Alarm Clear setting is the number of pulses that must be registered to verify that pump operation is
restored and clear the Flow Verify alarm. During Flow Verify alarm conditions, the count of pulses registered will
be reset to zero if no single pulses occur during the Flow Alarm Delay time period. In this manner, random single
pulses spread over a long time period will not accumulate and result in a Flow Verify alarm being cleared before
product feed is actually restored.

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If desired, a user can configure the feed monitor to attempt to reprime the pump when a Flow Verify alarm first is
activated.
The Reprime Time (MM:SS) specifies the amount of time that the output should be energized after the initiation of
a Flow Verify alarm. If the linked output is a solid state relay (set to a pulse proportional or PID control mode) or
an analog 4-20 mA output, the output will be set to the Max Output percent during the reprime event. If the Flow
Verify alarm is cleared during the reprime event (because the specified number of pulses was registered), the reprime
event will be immediately ended and normal control of the output channel will be restored.
While a Flow Verify alarm is active, the linked pump will be controlled based on the Flow Alarm Mode setting:
Disabled Flow Verify alarms are not monitored, no change in output control.
Interlock The output will be forced OFF while the alarm is active.(except during the reprime event)
Maintain The alarm condition has no effect on output control. (except during the reprime event)

If a Flow Verify alarm is active and Interlock is selected, the output to the pump will be turned off after the specified
Reprime Time and only operator actions can restore normal control operations. In most cases, action will be taken
to manually reprime the pump, refill the chemical tank, etc. and the output will be put into Hand mode to confirm
proper operation of the pump. When the Feed Monitor registers sufficient pulses, the Flow Verify alarm will clear
and the pump output can be put back into Auto Mode.
If both Total Alarm and Flow Verify alarms are active simultaneously, an Interlock selection for either mode setting
will take precedence for pump control. Automatic output control will continue despite the alarm conditions only if
Maintain is selected for both mode settings.

Interlocking or Activating any Control Output with a Feed Monitor Input

Digital Input channels are available for selection as Interlock Channels or Activate With Channels by any output. If
a Feed Monitor is selected in this manner, the Digital Input will trigger that action if any alarm (Flow Verify, Total
Alarm, or Range Alarm) is currently active.

Input Details
The details for this type of input include the current flow rate of chemical feed, the total volume fed since the last
reset, alarms, the status of the output linked to the input, the date and time of the last total reset, and the current
type of input setting.

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Totalizer Alarm A high limit on the total accumulated volume of chemical fed may be set, to trigger a
Total Alarm.
Reset Flow Total Enter this menu to reset the accumulated flow total to 0. Touch Confirm to accept, Cancel
to leave the total at the previous value and go back.
Set Flow Total This menu is used to set the total accumulated volume stored in the controller to match
a specified volume.
Scheduled Reset Choose to automatically reset the flow total, and if so, Daily, Monthly or Annually
Total Alarm Mode Choose to Interlock or Maintain the control of the linked pump while the Total Alarm is
active.
Flow Alarm Mode Choose to Interlock or Maintain the control of the linked pump while a Flow Verify
alarm is active. Choose Disable to monitor flow rate and accumulate total without any
flow alarms.
Flow Alarm Delay Time (MM:SS) that will trigger a Flow Verify alarm if the output is activated and no
pulses are registered.
Flow Alarm Clear Enter the number of contacts that must be registered to clear a Flow Verify alarm.

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Dead band Enter the percent output above which the pump is considered On for monitoring of
Flow Verify alarms. This setting is only available if the linked Output is a solid state
(pulsing) relay or analog (4-20 mA) output.
Reprime Time Time (MM:SS) that the output should be energized for the reprime event.
Volume/Contact Enter the volume, in ml, of chemical delivered for each pulse of the feed monitoring
device.
Flow Units Select the units of measure for the accumulated feed total.
Rate Units Select the units of measure for the feed flow rate time base.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes in the
flowrate. For example, with a 10% smoothing factor, the next reading shown will con-
sist of an average of 10% of the previous value and 90% of the current value.
Output Select the relay or analog (4-20 mA) output channel controlling the pump which will
be monitored by this feed monitor input.
Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected to the digital input channel

5.2.18 DI Counter Input

ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU – GLOBAL SETTINGS
A digital input counter input is used to count contacts from a digital input, totalize the number of contacts, and
monitor or control on the rate of contacts.

Input Details
The details for this type of input include the current rate, total contacts counted (in user defined units), date and
time of last total reset, alarms, and the current type of input setting.

Settings
Touch the Edit icon to view or change the settings related to the virtual input.
Alarms Low and High Alarm limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 100, and the deadband
is 1, the alarm will activate at 100 and deactivate at 99
Totalizer Alarm A high limit on the total number of contact closures accumulated may be set.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Reset Total Enter this menu to reset the accumulated total to 0. Touch Confirm to accept, or Cancel
to leave the total at the previous value and go back.
Set Total This menu is used to set the total number of contact closures stored in the controller a
certain value.
Scheduled Reset Choose to automatically reset the flow total, and if so, Daily, Monthly or Annually.
Units Type in the units of measure for the what the contacts represent (widgets, etc.)
Rate Units Select the units of measure for the rate time base (widgets per second, minute, hour,
day).
Units per Pulse Enter the number of units represented by one pulse.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next rate reading shown will consist of an
average of 10% of the previous value and 90% of the current value.

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Name The name used to identify the sensor may be changed.
Type Select the type of sensor to be connected to the digital input channel.

5.2.19 Remote Modbus DI State

ONLY AVAILABLE IF A MODBUS KEY FILE HAS BEEN IMPORTED AND THE COMM STATUS IN THE
REMOTE COMMUNICATIONS MENU HAS BEEN SET TO MODBUS

The Remote Modbus DI State input is used to simulate a switch closure by obtaining the open or closed state
information from a Modbus application via Modbus TCP. This information can be used to Interlock or activate a
control output in exactly the same way as a physical switch. This virtual input type however uses up an actual input
channel.

Input Details
The details for this type of input include the current state with a custom message for open versus closed, alarms,
the status of the interlock, date/time of the last update, cycle time, 24-hour time, total time, date/time of last total
time reset and the current type of input setting.

Settings
Touch the Edit icon to view or change the settings related to the sensor.
Open Message The words used to describe the virtual switch-open state may be customized.
Closed Message The words used to describe the virtual switch-closed state may be customized.
Interlock Choose whether the input should be in the interlocked state when the virtual switch
is either open or closed.
Alarm Choose if an alarm should be generated when the virtual switch is open, or closed,
or if no alarm should ever be generated.
Modbus Mode Select Server Mode is the Modbus application will write the value to the input on
its own schedule. Select Client if the controller will ask the Modbus application for
the latest value.
Remote Device IP Client mode only. Enter the IP address of the device that will provide the Modbus
data.
Data Port Client mode only. Enter the data port to be used by the Modbus TCP connection.
Reply Timeout Client mode only. Enter the number of seconds to wait before retrying if no data is
received.
Function Client mode only. Select the Modbus function that the controller will use to read
data.
Remote Register Client mode only. Enter the register that contains the desired data.
Update Period Client mode only. Enter the frequency that the controller will request new data.
Timeout Alarm Delay Enter the time that will trigger an Update Timeout alarm if no new data has been
received from the Modbus application.
Total Time Choose to totalize the amount of time that the virtual switch has been open or
closed. This will be displayed on the input details screen.
Reset Time Total Enter this menu to reset the accumulated time to zero. Touch Confirm to accept,
Cancel to leave the total at the previous value and go back.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Name The name used to identify the virtual switch may be changed.
Type Select the type of sensor to be connected to the digital input channel.

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5.2.20 Virtual Input – Calculation
A Calculation type Virtual Input is not a physical sensor; it is a value that is calculated from two physical sensor
inputs. The analog values that can be used for each type of calculation are selected from a List of all defined sensor
inputs, analog inputs, flowmeter rates, the other virtual input, solid state relay %, and analog output %.
Calculation modes are:
• Difference (Input - Input 2)
• Ratio (Input / Input 2)
• This selection could be used to calculate Cycles of Concentration in HVAC applications, for example
• Total (Input + Input 2)
• % Difference [(Input - Input 2) / Input]
• This selection could be used to calculate % Rejection in RO applications, for example

Virtual Input Details

The details for any type of virtual input include the current value calculated, alarms, the status, and the input type.

Settings
Touch the Edit icon to view or change the settings related to the virtual input.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband
is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Input Select the physical input or select Constant, whose value will be used in the calculation
shown above as the Input in the formula.
Constant Only appears if the Input selection is Constant. Enter the value.
Input 2 Select the physical input or select Constant, whose value will be used in the calculation
shown above as the Input 2 in the formula.
Constant 2 Only appears if the Input 2 selection is Constant. Enter the value.
Calculation Mode Select a calculation mode from the list.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Low Range Set the low end of the normal range for the calculated value. A value below this will
trigger a Range Alarm and deactivate any control output using the virtual input.
High Range Set the high end of the normal range for the calculated value. A value above this will
trigger a Range Alarm and deactivate any control output using the virtual input.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For ex-
ample, with a 10% smoothing factor, the next reading shown will consist of an average
of 10% of the previous value and 90% of the current value.
Name The name used to identify the input may be changed.
Type Select the type of input; either Calculation, Redundant, Raw Value, Disturbance,
or Not Used.

5.2.21 Virtual Input – Redundant

A Redundant type Virtual Input is not a physical sensor; it is a value that is calculated from two physical sensor
inputs. The redundant sensor algorithm compares the readings from two sensors, and chooses which sensor to use.
The value of the virtual input is the value of the sensor chosen by this comparison.

If the difference between the two exceeds a programmable amount, a deviation alarm is set, but control continues.
If one of the sensors goes into a range error or a fault alarm, the other sensor will take over. If both sensors give

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invalid readings, an input alarm is set and any outputs using the virtual input for control are disabled.

The analog values that can be used for each type of calculation are selected from a List of all defined sensor inputs
and analog inputs.

There are three modes:

• Primary/Backup – The primary sensor (selected as the Input) value, as opposed to the backup sensor
(selected as Input 2) value, is chosen as the virtual input value, assuming it has a valid reading.
• Minimum Value – The sensor that has the lower reading of the two sensors is chosen as the virtual
input value. This makes sense if a failing sensor normally drifts high.
• Maximum Value – The sensor that has the higher reading of the two sensors is chosen as the virtual
input value. This makes sense if a failing sensor normally drifts low.

Virtual Input Details

The details for a virtual input include the current difference calculated, the current values of the inputs used in the
calculation, alarms, the status, and the input type.

Settings
Touch the Edit icon to view or change the settings related to the virtual input.
Deviation Alarm Enter the value for the difference between the two input readings above which the
deviation alarm will trigger.
Deadband This is the Alarm Deadband. For example, if the Deviation Alarm is 1.00, and the
deadband is 0.1, the alarm will activate if the sensor readings are 1.01 units apart, and
deactivate at 0.89 units apart.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Mode Select which mode for determining the value for the virtual sensor input.
Input Select the physical input for the primary sensor.
Input 2 Select the physical input for the backup sensor.
Name The name used to identify the input may be changed.
Type Select the type of input; either Calculation, Redundant, Raw Value, Disturbance,
or Not Used.

5.2.22 Virtual Input – Raw Value

A Raw Value type Virtual Input is not a physical input. The value of the virtual input comes from the
unmanipulated signal from a real sensor.

• non-temperature compensated µS/cm

• mV for pH, ORP, Disinfection, Generic
• mA for analog inputs
• ohms for temperature

Virtual Input Details

The details for a virtual input include the current raw value of the real input used, alarms, the status, and the
input type.

Settings
Touch the Edit icon to view or change the settings related to the virtual input.
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Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the deadband
is 0.10, the alarm will activate at 7.01 and deactivate at 6.90.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Input Select the physical input whose raw value will be used as this virtual input.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an aver-
age of 10% of the previous value and 90% of the current value.
Name The name used to identify the input may be changed.
Type Select the type of input; either Calculation, Redundant, Raw Value, Disturbance,
or Not Used.

5.2.23 Virtual Input - Disturbance

A Disturbance type Virtual Input is not a physical input. The value of the virtual input is calculated from a real
sensor input plus an equation that defines the real sensor’s impact on a control output that is using a different real
sensor. A common example is controlling pH based upon a pH input signal, but modifying control based upon the
flow rate, with a Disturbance Type Virtual Input defining the impact of the flow rate on the control output.
Based on the disturbance input channel selection, minimum and maximum disturbance input readings, and de-
fined multiplier values at the min and max disturbance readings, this Virtual Input generates a value that is used to
multiply to a primary control value. Disturbance input channel values that result in a multiplier output of 1.0 have
no impact on the final control output. The output value is restricted between low and high limits to allow more
complete control over the impact of disturbance inputs. The value of the multiplier at min disturbance can be either
higher or lower than its value at max disturbance, depending upon what effect is desired on the control setpoint.

Value at
Max Disturbance

Multiplier Value sent to

Disturbance Algorithm

Value at
Min Disturbance

Max Disturbance
Min Disturbance
Disturbance Input Value

Virtual Input Details

The details for a virtual input include the current multiplier value calculated, the current values of the inputs used
in the calculation, alarms, the status, and the input type.

Settings
Touch the Edit icon to view or change the settings related to the virtual input.

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 Min Disturbance Enter the value of the disturbance input where the value of the calculated multiplier
will be the Value at Min Disturbance value (set below).
Max Disturbance Enter the value of the disturbance input where the value of the calculated multiplier
will be the Value at Max Disturbance (set below).
Value at Min Enter the value of the multiplier that will occur when the disturbance input is at the
Disturbance Min Disturbance value.
Value at Max Enter the value of the multiplier that will occur when the disturbance input is at the
Disturbance Max Disturbance value.
Smoothing Factor Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Disable Disturbance If any of the relays or digital inputs are selected, the multiplier value of the disturbance
Channels input is set to 1.0. if the selected relay or digital input is active. Typically this is used to
stop using the disturbance function in case of an upset condition.
Disturbance Input Select the real sensor input that will be used to modify the control output.
Name The name used to identify the input may be changed.
Type Select the type of input; either Calculation, Redundant, Raw Value, Disturbance,
or Not Used.

5.2.24 Remote Modbus Sensor Virtual Input

ONLY AVAILABLE IF A MODBUS KEY FILE HAS BEEN IMPORTED AND THE COMM STATUS IN THE
REMOTE COMMUNICATIONS MENU HAS BEEN SET TO MODBUS

The Remote Modbus sensor virtual input is used to simulate a sensor by obtaining the sensor value from a Modbus
application via Modbus TCP. This information can be used to activate a control output, be logged or graphed in
exactly the same way as a physical sensor.

Input Details
The details for this type of input include the current value, alarms, the minimum, maximum and average values
over the past 24 hours, the status of the input, date/time of the last update, cycle time, 24-hour time, total time,
date/time of last total time reset and the current type of input setting.

Settings
Touch the Edit icon to view or change the settings related to the virtual input.
Alarms Low-Low, Low, High and High-High Alarms limits may be set.
Deadband This is the Alarm Deadband. For example, if the High Alarm is 7.00, and the
deadband is 0.1, the alarm will activate at 7.01 and deactivate at 6.90.
Alarm & Datalog If any of the relays or digital inputs are selected, any alarms related to this input
Suppression will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Low Range Enter the low end of the range of the sensor.
High Range Enter the high end of the range of the sensor.
Modbus Mode Select Server Mode is the Modbus application will write the value to the input on
its own schedule. Select Client if the controller will ask the Modbus application for
the latest value.
Remote Device IP Client mode only. Enter the IP address of the de-vice that will provide the Modbus
data.
Data Port Client mode only. Enter the data port to be used by the Modbus TCP connection.

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Reply Timeout Client mode only. Enter the number of seconds to wait before retrying if no data is
received.
Function Client mode only. Select the Modbus function that the controller will use to read
data.
Remote Register Client mode only. Enter the register that contains the desired data.
Update Period Client mode only. Enter the frequency that the con-troller will request new data.
Timeout Alarm Delay Enter the time that will trigger an Update Timeout alarm if no new data has been
received from the Modbus application.
Name The name used to identify the virtual switch may be changed.
Units Type in the units of measure for the input.
Type Select the type of sensor to be connected to the digital input channel.

5.3 Outputs Menu

Touch the Outputs icon to view a list of all relay outputs, analog outputs, and virtual (Control) outputs. Swipe up and down
the list of outputs. A yellow rectangle on the lower right will indicate if there is more than one page and the current position
in the pages
Touch an output to access that output’s details and settings.

NOTE: When the output control mode or the input assigned to that output is changed, the output reverts to OFF mode.
Once you have changed all settings to match the new mode or sensor, you must put the output into AUTO mode to
start control.

5.3.1 Relay or Control Outputs, Any Control Mode

Settings
Touch the Edit icon to view or change the settings related to the relay. Settings that are available for any control mode
include:
HOA Setting Select Hand, Off or Auto mode by touching the desired mode.
Output Time Limit Enter the maximum amount of time that the relay can be continuously activated.
Once the time limit is reached, the relay will deactivate until the Reset Output
Timeout menu is entered.
Reset Output Timeout Enter this menu to clear an Output Timeout alarm and allow the relay to control the
process again.
Interlock Channels Select the relays and digital inputs that will interlock this relay, when those other
relays are activated in Auto mode. Using Hand or Off to activate relays bypasses
the Interlock logic.
Activate With Channels Select the relays and digital inputs that will activate this relay, when those other
relays are activated in Auto mode. Using Hand or Off to activate relays bypasses
the Activate With logic.
Minimum Relay Cycle Enter the number of seconds that will be minimum amount of time that the relay
will be in the active or inactive state. Normally this will be set to 0, but if using a
motorized ball valve that takes time to open and close, set this high enough that the
valve has time to complete its movement.
Hand Time Limit Enter the amount of time that the relay will activate for when it is in Hand mode.
Reset Time Total Press the Confirm icon to reset the total accumulated on-time stored for the output back to 0.
Name The name used to identify the relay may be changed.
Mode Select the desired control mode for the output.

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5.3.2 Relay or Control Outputs, On/Off Control Mode
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-time,
alarms related to this output, current cycle on time, relay type and the current control mode setting.

Settings
Touch the Edit icon to view or change the settings related to the relay.
Set point Enter the sensor process value at which the relay will activate.
Deadband Enter the sensor process value away from the set point at which the relay will deactivate.
Duty Cycle Period Using a duty cycle helps to prevent overshooting the set point in applications where the
response of the sensor to chemical additions is slow. Specify the amount of time for the
cycle, and the percentage of that cycle time that the relay will be active. The relay will
be off for the rest of the cycle, even if the set point has not been satisfied.
Enter the length of the duty cycle in minutes:seconds in this menu. Set the time to 00:00
if use of a duty cycle is not required.
Duty Cycle Enter the percentage of the cycle period that the relay will be active. Set the percentage
to 100 if use of a duty cycle is not required.
On Delay Time Enter the delay time for relay activation in hours:minutes:seconds. Set the time to
00:00:00 to immediately activate the relay.
Off Delay Time Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to
00:00:00 to immediately deactivate the relay.
Input Select the sensor to be used by this relay.
Direction Select the control direction.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.3 Relay or Control Outputs, Flow Timer Control Mode

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, remaining feed time, accumulated flow total, alarms related to this output, current cycle on time, relay type
and the current control mode setting.

Settings
Touch the Edit icon to view or change the settings related to the relay.
Feed Duration Enter the amount of time for the relay to activate for once the accumulated volume
through the water meter has been reached.
Accumulated Volume Enter the volume of water to pass through the water meter required to trigger the chemical feed.
Flow Input Select the input to be used to control this output.
Flow Input #2 Select the second flowmeter input to be used to control this output if applicable. The
sum of the two flow total volumes will be used to trigger the chemical feed.

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Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.4 Relay or Control Outputs, Bleed and Feed Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated
on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Feed Time Limit Enter the maximum amount of feed time per bleed event
Bleed Select the relay to be used for Bleed/Blowdown
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.5 Relay or Control Outputs, Bleed then Feed Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated
on-time, remaining feed time, the accumulated bleed time, alarms related to this output, current cycle on time,
relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Feed Percentage Enter the % of bleed relay activation time to use for the feed relay activation time
Feed Time Limit Enter the maximum amount of feed time per bleed event
Reset Timer Use this menu to cancel the current feed cycle
Bleed Select the relay to be used for Bleed/Blowdown

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Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.6 Relay or Control Outputs, Percent Timer Control Mode

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, cycle time, accumulated
on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Sample Period Enter the duration of the sample period.
Feed Percentage Enter the % of the sample period time to use for the feed relay activation time

5.3.7 Relay or Control Outputs, Biocide Timer Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS
Basic Timer Operation
This algorithm is typically used to provide a baseline amount of chlorine for disinfection, and periodically shock-
ing the system with a larger dose. During normal operation, the relay will be reacting to the sensor to maintain
a set point within a programmable Deadband, as described in On/Off Control Mode above. When a Spike event
triggers, the algorithm will change from the normal set point to the Spike Set Point, for the programmed time.
Once the time expires, control to the normal set point resumes.

Basic Biocide Operation

When a biocide event triggers, the algorithm will first prebleed (if a prebleed is programmed) for the set amount of
prebleed time or down to the set prebleed conductivity. Then the biocide relay is turned on for the set duration. This is
followed by a post-bio add lockout that blocks the bleed relay from turning on for a set amount of bleed lockout time.
Special Condition Handling
Prebleed
If both a time limit and a conductivity limit are set, the time limit takes precedence. The bleed relay will turn off
once the time limit is reached or when the prebleed conductivity limit is reached (whichever occurs first). If the
prebleed has a conductivity limit set, then the time limit can’t be set to zero, as this would allow the prebleed to
last forever if the conductivity limit is never reached.
Overlapping biocide events
If a second biocide event occurs while the first one is still active (in prebleed, biocide add or lockout), the second
event will be ignored. An Event Skipped alarm will be set.
Interlock Conditions
Interlocks override the relay control, but do not change the operation of the timers or related bleed control.
A no-flow (or other interlock) condition does not delay a biocide add. The biocide add duration timer will contin-
ue even if the relay is locked out due to a no-flow or other interlock condition. This will prevent delayed biocide
adds which can potentially cause higher than expected biocide concentrations in the system when two biocides
adds occur close to the same time. Not allowing delayed biocide adds will also prevent incompatible biocides
getting added at close to the same time.

74
 “Activate With” Conditions
“Activate with channels” settings override the relay control, but do not change the operation of the timers or
related bleed control. The biocide timer continues counting biocide add time when the biocide relay is forced on,
and ends at the expected time (biocide event start time plus duration). If the “activate with” condition continues
after the end of the biocide feed time, the relay remains activated.
Alarms
An Event Skipped alarm is set when a second biocide event occurs while one event is still running (either in
prebleed, biocide add or post-biocide add lockout).
An Event Skipped alarm is also set when the biocide add relay never turns on during a biocide add because of an
interlock condition.
The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or
“activate with” force on condition).

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated
on-time, alarms related to this output, current cycle on time, relay type and the current control mode setting. The
current week number and day of the week is displayed (even if there is no multi-week repetition event pro-
grammed). Cycle Time shows the time counting down of the currently active part of the biocide cycle (pre-bleed,
biocide feed, or post biocide feed lockout of the bleed).

Settings
Touch the Edit icon to view or change the settings related to the relay.
Event 1 (through 10) Enter these menus to program timer events via the menus below:
Repetition Select the time cycle to repeat the event: Daily, 1 Week, 2 Week, 4 Week, or None.
An event means that the output is turned on at the same time of day, for the same
amount of time, and except for the Daily cycle, on the same day of the week.
Week Only appears if Repetition is longer than 1 Week. Select the week during which
the event will occur.
Day Only appears if Repetition is longer than Daily. Select the day of the week
during which the event will occur.
Start Time Enter the time of day to start the event.
Duration Enter the amount of time that the relay will be on.
Bleed Select the relay to be used for Bleed/Blowdown
Prebleed Time If lowering the conductivity prior to feeding biocide is desired using a fixed
time instead of a specific conductivity setting, enter the amount of time for the
prebleed. Also may be used to apply a time limit on a conductivity based
prebleed.
Prebleed To If lowering the conductivity prior to feeding biocide is desired, enter the
conductivity value. If no prebleed is required, or if a time-based prebleed is
preferred, set the conductivity value to 0.
Cond Input Select the sensor to be used to control the prebleed relay selected above.
Bleed Lockout Enter the amount of time to lockout bleed after the biocide feed is complete.
Add Last Missed Select Enabled if the controller should delay start the most recent Biocide cycle
until immediately after an Interlock clears, or Disabled if all Biocide feed should
be skipped if there is an Interlock condition at the time the add was due to start.

5.3.8 Relay or Control Outputs, Alarm Output Mode

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, relay type and the current control mode setting.

75
Settings
Touch the Edit icon to view or change the settings related to the relay.
Alarm Mode Select the alarm conditions that will put the relay into the alarm state:
All Alarms
Selected Alarms
On Delay Time Enter the delay time for relay activation in hours:minutes:seconds. Set the time
to 00:00:00 to immediately activate the relay.
Off Delay Time Enter the delay time for relay deactivation in hours:minutes:seconds. Set the
time to 00:00:00 to immediately deactivate the relay.
Select Alarms Scroll through the list of all inputs and outputs, as well as System Alarms and
Network (Ethernet) alarms. Touch the parameter to select alarms related to that
parameter, then scroll through the list of alarms. Touch each alarm to check the
box indicating the alarm is selected. Touch the Confirm icon when finished with
that parameter to save the changes.
Repeat for each input and output.
Output Select if the relay will be active when in the alarm state (Normally Open) or if
the relay will be active when not in the alarm state (Normally Closed).

5.3.9 Relay or Control Outputs, Time Proportional Control Mode

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, the current % on
time calculated for the cycle, the current point in the cycle time, accumulated on-time, alarms related to this output,
current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Set point Enter the sensor process value at which the relay will be off for the entire Sample Period.
Proportional Band Enter the distance that the sensor process value is away from the set point at which the
relay will be on for the entire Sample Period.
Sample Period Enter the duration of the sample period.
Input Select the sensor to be used by this relay.
Direction Select the control direction.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded,
the relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm
will clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to
whichever HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.10 Relay or Control Outputs, Intermittent Sampling Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS
In an Intermittent Sampling with Proportional Blowdown control mode, the controller reads an analog input on
a timed schedule, and the relay responds to maintain the conductivity value at the set point by activating for a
programmable amount of time that varies with the deviation from the set point.

76
The relay goes through a sequence of activation/deactivation as described below. The intended purpose of this
algorithm is boiler blowdown. A sample cannot be supplied to the sensor continuously in many boilers because
a recirculating loop is not possible, and it would be a waste of hot water to constantly run a sample to a drain. A
valve is opened intermittently to supply a sample to the sensor.
Where a non-ideal installation of the sensor can cause the sample to flash to steam, and give a false low reading,
this can be corrected by taking the reading with the sample held in the pipe with the sampling valve closed, so the
sample is at boiler pressure and therefore back in the liquid state. Enable Trap Sample if this is the case. Because
the conductivity reading cannot be trusted while the valve is open, the blowdown is timed rather than in direct re-
sponse to a sensor reading. Rather than relying upon a fixed time, where the blowdown could be much longer than
necessary if the reading is just barely off the set point value, proportional blowdown adjusts the time appropriately.
If Trap Sample is Disabled, then the blowdown is not timed, and the Hold Time and Maximum Blowdown time are
not used. The blowdown valve will stay open until the conductivity is below set point. In this case the Output Time
Limit menu is available to stop the blowdown if the sensor is unresponsive.
Note that the software will not allow two relays using Intermittent Sampling to be assigned to the same sensor
input; the previous relay set up will change to Off mode.
Output Details
The details for this type of output include the relay on/off state, relay status (HOA mode, Interlock status,
Intermittent Sampling cycle step, etc.), time remaining for the active Intermittent Sampling cycle step, alarms
related to this output, current cycle on time, relay type, the live reading of the conductivity, and the current control
mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Set point Enter the conductivity value below which the controller will not start a blowdown cycle.
Proportional Band (only shown if trap sample is enabled) Enter the conductivity value above the set point
at which the maximum blowdown time will occur. For example, if the Set point is 2000
uS/cm, and the Proportional Band is 200 uS/cm, then if the conductivity is above 2200
uS/cm the blowdown valve will open for the Maximum Blowdown time described be-
low. If the conductivity of the trapped sample is 2100 uS/cm, the blowdown valve will
open for half the Maximum Blowdown time.
Deadband (only shown if trap sample is disabled) Enter the sensor process value away from the
set point at which the relay will deactivate.
Sample Time Enter the length of time the blowdown valve will be open in order to capture a fresh
sample of boiler water.
Hold Time (only shown if trap sample is enabled) Enter the length of time the blowdown valve
will be closed in order to ensure that the captured sample is at boiler pressure.
Maximum Blowdown (only shown if trap sample is enabled) Enter the maximum length of time that the
blowdown valve will be open, when the conductivity of the captured sample is above
the set point plus the proportional band.
Wait Time Enter the time to wait to sample the water again once the captured sample is below set point.
Trap Sample Enable or disable trapping of the sample.
Cond Input Select the sensor to be used by this relay.

5.3.11 Relay, Manual Mode

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, relay type and the current control mode setting.

77
Settings
Touch the Edit icon to view or change the settings related to the relay. A Manual relay will activate if the HOA
mode is Hand, or if it is Activated With another channel.
On Delay Time Enter the delay time for relay activation in hours:minutes:seconds. Set the time to
00:00:00 to immediately activate the relay.
Off Delay Time Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to
00:00:00 to immediately deactivate the relay.

5.3.12 Relay or Control Outputs, Pulse Proportional Control Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE
Output Details
The details for this type of output include the relay pulse rate, HOA mode or Interlock status, accumulated on-time,
alarms related to this output, current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Set point Enter the sensor process value at which the output will pulse at the Minimum Output % set below.
Proportional Band Enter the distance that the sensor process value is away from the set point beyond
which the output will be pulsing at the Maximum Output % set below.
Minimum Output Enter the lowest possible pulse rate as a percentage of the Maximum Stroke Rate set
below (normally 0%).
Maximum Output Enter the highest possible pulse rate as a percentage of the Maximum Stroke Rate set below.
Maximum Rate Enter the maximum pulse rate that the metering pump is designed to accept
(10 - 2400 pulse/minute range).
Input Select the sensor to be used by this relay.
Direction Set the control direction.

5.3.13 Relay or Control Outputs, PID Control Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE & HVAC MODE IS DISABLED
The PID algorithm controls a solid state relay using standard Proportional-Integral-Derivative control logic. The
algorithm provides feedback control based on an error value continuously calculated as the difference between a
measured process variable and a desired set point. Tuning settings specify the response for proportional (the size of
the error), integral (the time that the error has been present), and derivative (the rate of change for the error) param-
eters. With proper tuning, the PID control algorithm can hold the process value close the set point while minimiz-
ing overshoot and undershoot.
Normalized Error
The error value versus set point that is calculated by the controller is normalized and represented as percent of full
scale. As a result, tuning parameters entered by the user are not dependent upon the scale of the process variable
and the PID response with similar settings will be more consistent even when using different types of sensor
inputs.
The scale used to normalize the error is dependent upon the type of sensor selected. By default, the full nominal
range of the sensor is used. This range is editable by the user if tighter control is desired.
PID Equation Formats
The controller supports two different forms of the PID equation as specified by the Gain Form setting. The two
forms require different units for entry of the PID tuning parameters.
Standard
The standard form is more commonly used in industry because its time-based settings for the integral and deriva-
tive coefficients are more meaningful. This form is selected by default.
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 Parameter Description Units
Kp Gain unitless
Ti Integral Time seconds or seconds/repeat
Td Derivative Time seconds

Output (%) = Kp e(t) +

1
f e(t)dt + Td de(t)
Ti dt

Parameter Description Units

e(t) Current Error % of full scale
dt Delta Time Between Readings seconds
de(t) Difference Between Current Error & Previous Error % of full scale

Parallel
The parallel form allows the user to enter all parameters as Gains. In all cases, larger gain values result in faster
output response.
Parameter Description Units
Kp Proportional Gain unitless
Ki Integral Gain 1/seconds
Kd Derivative Gain seconds

Output (%) = Kp e(t) + Ki f e(t)dt + Kd

de(t)
dt
Integral Value Management
To determine the integral component of the PID calculation, the controller software must maintain a running total
of the accumulated area under the error curve (Current Integral). The sign of the value added to the accumulated
Current Integral during each cycle may be positive or negative based on the current Direction setting as well as the
relative values of the current process reading and the set point.
Override Control
The Current Integral accumulates when the output is set to Auto mode. If the controller is switched to Off mode,
the value no longer accumulates, but it is not cleared. Therefore, PID control will resume where it left off if the
controller is switched from Off back to Auto. Similarly, accumulation of the Control Integral will be suspended if
the output is interlocked and resume after the lock-out is removed.
Bumpless Transfer
When the output is switched from Hand to Auto mode, the controller calculates a value for the Current Integral
using the current error to generate the same output percent as the Hand Output setting. This calculation does not
use the Derivative tuning setting to minimize errors from momentary fluctuations in the input signal. This feature
ensures a smooth transition from manual to automatic control with minimal overshoot or undershoot as long as the
user sets the Hand Output percentage close to the value that the process is expected to require for optimal control
in Auto mode.
Wind-up Suppression
The Current Integral value that is accumulating while the output is set to Auto can become very large or very small
if the process value remains on the same side of the set point for a prolonged period of time. However, the control-
ler may not be able to continue to respond if its output is already set to the minimum or maximum limits (0-100%

79
by default). This condition is referred to as Control Wind-Up and can result severe overshoot or undershoot after a
prolonged upset has ended.
For example, if the process value remains far below the set point despite a control output being pinned at 100%,
the Current Integral will continue to accumulate errors (wind-up). When the process value finally rises to above the
set point, negative errors will begin to decrease the Current Integral value. However, the value may remain large
enough to keep the output at 100% long after the set point is satisfied. The controller will overshoot the set point
and the process value will continue to rise.
To optimize system recovery after wind-up situations, the controller suppresses updates to the Current Integral
that would drive the output beyond its minimum or maximum limit. Ideally, the PID parameters will be tuned
and the control elements (pump, valves, etc.) will be sized properly so that the output never reaches its minimum
or maximum limit during normal control operations. But with this wind-up suppression feature, overshoot will be
minimized should that situation occur.

Output Details
The details for this type of output include the pulse rate in %, HOA mode or Interlock status, input value, current
integral, current and accumulated on-times, alarms related to this output, relay type, and the current control mode
setting.

Set Point Numeric entry of a process value used as a target for PID control. The default value,
units and display format (number of decimal places) used during data entry are defined
based on the Input channel setting selected.
Gain When the Gain Form setting is Standard, this unitless value is multiplied by the total
of the proportional, integral, and derivative terms to determine the calculated output
percent.
Proportional Gain When the Gain Form setting is Parallel, this unitless value is multiplied by the normalized
error (current process value versus set point) to determine the proportional component of
the calculated output percent.
Integral Time When the Gain Form setting is Standard, this value is divided into the integral of the
normalized error (area under the error curve), then multiplied by the Gain to determine
the integral component of the calculated output percent.
Integral Gain When the Gain Form setting is Parallel, this value is multiplied by the integral of the
normalized error (area under the error curve) to determine the integral component of
the calculated output percent.
Derivative Time When the Gain Form setting is Standard, this value is multiplied by the change in error
between the current reading and the previous reading, then multiplied by the Gain to
determine the derivative component of the calculated output percent.
Derivative Gain When the Gain Form setting is Parallel, this value is multiplied by the change in error
between the current reading and the previous reading to determine the derivative
component of the calculated output percent.
Reset PID Integral The PID Integral Value is a running total of the accumulated area under the error curve
(Current Integral). When this menu option is selected, this total is set to zero and the
PID algorithm is reset to its initial state.
Minimum Output Enter the lowest possible pulse rate as a percentage of the Maximum Stroke Rate set
below (normally 0%).
Maximum Output Enter the highest possible pulse rate as a percentage of the Maximum Stroke Rate set below.
Maximum Rate Enter the maximum pulse rate that the metering pump is designed to accept
(10 – 2400 pulse/minute range).
Input Select the sensor to be used by this relay
Direction Set the control direction. This setting is used to determine the sign of the calculated error
(current process value versus set point) and allows flexible control with only positive
values for all PID tuning parameters.

80
Input Minimum The low end of the sensor input range, used to normalize errors into percent of full scale
units. These values are set to the nominal range of the selected input sensor by default.
Input Maximum The high end of the sensor input range, used to normalize errors into percent of full scale
units. These values are set to the nominal range of the selected input sensor by default.
Gain Form Select the PID Equation Format used to enter tuning parameters.

5.3.14 Relay or Control Outputs, Dual Set Point Mode

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Set point Enter the first sensor process value at which the relay will activate.
Set point 2 Enter the second sensor process value at which the relay will activate.
Deadband Enter the sensor process value away from the set point at which the relay will deactivate.
Duty Cycle Period Using a duty cycle helps to prevent overshooting the set point in applications where the
response of the sensor to chemical additions is slow. Specify the amount of time for the
cycle, and the percentage of that cycle time that the relay will be active. The relay will
be off for the rest of the cycle, even if the set point has not been satisfied.
Enter the length of the duty cycle in minutes:seconds in this menu. Set the time to
00:00 if use of a duty cycle is not required.
Duty Cycle Enter the percentage of the cycle period that the relay will be active. Set the percentage
to 100 if use of a duty cycle is not required.
On Delay Time Enter the delay time for relay activation in hours:minutes:seconds. Set the time to
00:00:00 to immediately activate the relay.
Off Delay Time Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to
00:00:00 to immediately deactivate the relay.
Input Select the sensor to be used by this relay.
Direction Select the control direction. In Range will activate the relay when the input reading is
between the two set points. Out of Range will activate the relay when the input reading
is outside the two set points.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.15 Relay or Control Outputs, Timer Control Mode

ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU – GLOBAL SETTINGS
Basic Timer Operation
When a timer event triggers the algorithm will activate the relay for the programmed time.

81
 Special Condition Handling
Overlapping timer events
If a second timer event occurs while the first one is still active, the second event will be ignored. An Event
Skipped alarm will be set.
Interlock Conditions
Interlocks override the relay control, but do not change the operation of the timer control.
A digital input or output interlock condition does not delay the relay activation. The relay activation duration
timer will continue even if the relay is deactivated due to an interlock condition. This will prevent delayed events
which can potentially cause problems in they do not occur at the correct time.
“Activate With” Conditions
“Activate with channels” settings override the relay control, but do not change the operation of the timer control.
The relay activation duration timer continues counting when the timer relay is forced on, and ends at the expect-
ed time (event start time plus duration). If the “activate with” condition continues after the end of the event time,
the relay remains activated.
Alarms
An Event Skipped alarm is set when a second timer event occurs while one event is still running.
An Event Skipped alarm is also set when the timer relay never turns on during an event because of an interlock
condition.
The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or
“activate with” force on condition).
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, relay type and the current control mode setting. The cur-
rent week number and day of the week is displayed (even if there is no multi-week repetition event programmed).
Cycle Time shows the time counting down of the currently active part of the timer cycle.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Event 1 (through 10) Enter these menus to program timer events via the menus below:
Repetition Select the time cycle to repeat the event: Hourly, Daily, 1 Week, 2 Week, 4
Week, or None.
An event means that the output is turned on at the same time of day, for the same
amount of time, and except for the Daily cycle, on the same day of the week.
Week Only appears if Repetition is longer than 1 Week. Select the week during
which the event will occur.
Day Only appears if Repetition is longer than Daily. Select the day of the week
during which the event will occur.
Events Per Day Only appears if Repetition is Hourly. Select the number of events per day. The
events occur on the Start Time and then evenly spaced throughout the day.
Start Time Enter the time of day to start the event.
Duration Enter the amount of time that the relay will be on.
Add Last Missed Select Enabled if the controller should delay start the most recent Biocide
cycle until immediately after an Interlock clears, or Disabled if all Biocide
feed should be skipped if there is an Interlock condition at the time the add
was due to start.

5.3.16 Relay or Control Outputs, Probe Wash Control Mode

Basic Timer Operation
When a Probe Wash event triggers, the algorithm will activate the relay for the programmed time. The relay will
activate a pump or valve to supply a cleaning solution to the sensor or sensors. The output of the selected sensors
will either be held or disabled during the cleaning cycle, and for a programmable hold time after the cleaning cycle.

82
Special Condition Handling
Overlapping timer events
If a second timer event occurs while the first one is still active, the second event will be ignored. An Event Skipped
alarm will be set.
Interlock Conditions
Interlocks override the relay control, but do not change the operation of the timer control.
A digital input or output interlock condition does not delay the relay activation. The relay activation duration timer
will continue even if the relay is deactivated due to an interlock condition. This will prevent delayed events which
can potentially cause problems in they do not occur at the correct time.
“Activate With” Conditions
“Activate with channels” settings override the relay control, but do not change the operation of the timer control.
The relay activation duration timer continues counting when the timer relay is forced on, and ends at the expected
time (event start time plus duration). If the “activate with” condition continues after the end of the event time, the
relay remains activated.
Alarms
An Event Skipped alarm is set when a second timer event occurs while one event is still running.
An Event Skipped alarm is also set when the timer relay never turns on during an event because of an interlock
condition.
The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or
“activate with” force on condition).
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, relay type and the current control mode setting. The cur-
rent week number and day of the week is displayed (even if there is no multi-week repetition event programmed).
Cycle Time shows the time counting down of the currently active part of the timer cycle.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Event 1 (through 10) Enter these menus to program timer events via the menus below:
Repetition Select the time cycle to repeat the event: Hourly, Daily, 1 Week, 2 Week,
4 Week, or None.
An event means that the output is turned on at the same time of day, for the
same amount of time, and except for the Daily cycle, on the same day of the
week.
Week Only appears if Repetition is longer than 1 Week. Select the week during
which the event will occur.
Day Only appears if Repetition is longer than Daily. Select the day of the week
during which the event will occur.
Events Per Day Only appears if Repetition is Hourly. Select the number of events per day.
The events occur on the Start Time and then evenly spaced throughout the
day.
Start Time Enter the time of day to start the event.
Duration Enter the amount of time that the relay will be on.
Input Select the sensor that will be washed.
Input 2 Select the second sensor, if applicable, that will be washed.
Sensor Mode Select the effect that the probe wash event will have on any control outputs
that use the sensor(s) being washed. The options are to either Disable the
sensor readings (turn the control output off) or Hold the sensor reading at
the last valid sensor reading prior to the start of the probe wash event.

83
Hold Time Enter the amount of time needed to hold the sensor reading after the event
has finished, in order for the wash solution to be replaced by process
solution.
5.3.17 Relay or Control Outputs, Spike Control Mode
Basic Timer Operation
This algorithm is typically used to provide a baseline amount of chlorine for disinfection, and periodically shocking
the system with a larger dose. During normal operation, the relay will be reacting to the sensor to maintain a set point
within a programmable Deadband, as described in On/Off Control Mode above. When a Spike event triggers, the
algorithm will change from the normal set point to the Spike Set Point, for the programmed time. Once the time
expires, control to the normal set point resumes. The Onset Time setting allows the user to decide if the programmed
spike duration time starts counting down immediately, or if the controller will wait until the higher set point is
achieved
(or the onset time expires, whichever comes first) before starting the spike Duration timer.

Special Condition Handling

Overlapping timer events
If a second timer event occurs while the first one is still active, the second event will be ignored. An Event Skipped
alarm will be set.
Interlock Conditions
Interlocks override the relay control, but do not change the operation of the timer control.
A digital input or output interlock condition does not delay the relay activation. The relay activation duration timer
will continue even if the relay is deactivated due to an interlock condition. This will prevent delayed events which
can potentially cause problems in they do not occur at the correct time.
“Activate With” Conditions
“Activate with channels” settings override the relay control, but do not change the operation of the timer control.
The relay activation duration timer continues counting when the timer relay is forced on, and ends at the expected
time (event start time plus duration). If the “activate with” condition continues after the end of the event time, the
relay remains activated.
Alarms
An Event Skipped alarm is set when a second timer event occurs while one event is still running.
An Event Skipped alarm is also set when the timer relay never turns on during an event because of an interlock
condition.
The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or “acti-
vate with” force on condition).

Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, current cycle on time, relay type and alarms. The current week number and day of the week is displayed
(even if there is no multi-week repetition event programmed). Cycle Time shows the time counting down of the
currently active part of the cycle.

Settings
Press the Edit key view or change the settings related to the relay.
Set point Enter the sensor process value at which the relay will activate.
Spike Set point Enter the sensor process value at which the relay will activate during the Spike
Event time.
Deadband Enter the sensor process value away from the set point at which the relay will
deactivate. The same Deadband is used for the normal Set Point and the Spike Set
Point.

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Onset Time The onset time determines when the duration timer starts. If set to zero, the dura-
tion time starts immediately. If set higher than that, the controller will not start the
duration timer until the spike set point is achieved, or until the onset time is over,
whichever comes first.
Duty Cycle Period Using a duty cycle helps to prevent overshooting the set point in applications
where the response of the sensor to chemical additions is slow. Specify the amount
of time for the cycle, and the percentage of that cycle time that the relay will be
active. The relay will be off for the rest of the cycle, even if the set point has not
been satisfied.

Enter the length of the Duty Cycle Period in minutes:seconds in this menu. Set the
time to 00:00 if use of a duty cycle is not required.
Duty Cycle Enter the percentage of the cycle period that the relay will be active. Set the
percentage to 100 if use of a duty cycle is not required.
Event 1 (through 8) Enter these menus to program spike events via the menus below:
Repetition Select the time cycle to repeat the event: Daily, 1 Week, 2 Week, 4 Week, or None.
An event means that the output is turned on at the same time of day, for the same
amount of time, and except for the Daily cycle, on the same day of the week.
Week Only appears if Repetition is longer than 1 Week. Select the week during which
the event will occur.
Day Only appears if Repetition is longer than Daily. Select the day of the week during
which the event will occur.
Start Time Enter the time of day to start the event.
Duration Enter the amount of time that the relay will be on.
Input Select the sensor to be used by this relay.
Direction Select the control direction.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that
the relay can have between midnight and midnight the next day. If the time is
exceeded, the relay will deactivate, and a Daily Max Timeout alarm will be
triggered. The alarm will clear, and relay allowed to reactivate at midnight the next
day.
If the relay was in Hand mode when the alarm was triggered, it will revert to
whichever HOA state it was in prior to being set to Hand.
To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.18 Relay or Control Outputs Output, Flow Proportional Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE
Overview
In Flow Proportional control mode, the controller monitors the rate of flow through an analog or digital flow meter,
and continuously adjusts the proportional band to achieve a target PPM level.

The user enters the target PPM and the data necessary to calculate the proportional band (the water flow rate at
which the maximum pulse rate will occur) required to maintain the target PPM with that flow rate of water.

% output = Target PPM x Water Flow Rate (liter/min or gal/min)

Cycles x Pump Rating (liter or gal/hr) x Pump Setting (%) x Specific Gravity x 166.67

% output = Target PPM x Water Flow Rate (m3⁄min)

Cycles x Pump Rating (liter/hr) x Pump Setting (%) x Specific Gravity x 0.16667
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Control Operation
If the output is continuously on for longer than the Output Time Limit, then output will deactivate.
Output Details
The details for this type of output include the output %, HOA mode or Interlock status, alarms related to this
output, flow input value, current cycle on time, total accumulated on-time, raw pulse rate output, and the current
control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Target Enter the desired PPM set point for the product.
Pump Capacity Enter the maximum flow rate for the metering pump
Pump Setting Enter the stroke length setting for the metering pump, in percent
Specific Gravity Enter the specific gravity of the product to be added.
Maximum Rate Enter the maximum pulse rate that the metering pump is designed to accept
(10 - 2400 pulse/minute range).
Hand Output Enter the output % desired when the output is in Hand mode
Flow Input Select the flow meter to be used as an input for this control relay

5.3.19 Relay or Control Outputs, Target PPM Control Mode

ONLY AVAILABLE IF HVAC MODE IS ENABLED
Overview
In Target PPM control mode, the controller monitors the total volume of flow through up to two analog or digital
flow meters, and after a programmable volume has been accumulated, the relay activates for a calculated time to
achieve a target PPM level.
The user enters the target PPM, the volume of water to trigger the chemical feed, and the data necessary to calcu-
late the pump on-time required to maintain the target PPM in that volume of water.

Pump On-Time (sec.) = Accumulator Setpoint (gal or l) x Product Level x 0.0036

Cycles x Pump Rating (gal or l/hr.) x Pump Setting (%) x Specific Gravity (g/cm3)

Pump On-Time (sec.) = Accumulator Setpoint (m3) x Product Level x 3.6

Cycles x Pump Rating (I/hr) x Pump Setting (%) x Specific Gravity (g/cm3)

Control Operation
As flow accumulates, the controller updates a field called Accumulator Total. When this value is greater than or
equal to the value set for the Accumulator Volume, the relay activates for the calculated number of seconds, and the
accumulated total is reduced by the accumulator volume amount.
If the trigger volume is achieved again before the activation time has expired, the newly calculated on-time per
unit volume is added to the remaining on-time. If the relay state is continuously on for longer than the Output Time
Limit, then relay will deactivate.
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, total accumulated
on-time, alarms related to this output, current cycle on time, remaining on-time, accumulator total, disturbance
input value (if used) and adjusted target setpoint (if disturbance input is used), cycles of concentration, relay type
and the current control mode setting.

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Settings
Touch the Edit icon to view or change the settings related to the relay
Target Enter the desired PPM set point for the product.
Pump Capacity Enter the maximum flow rate for the metering pump.
Pump Setting Enter the stroke length setting for the metering pump, in percent.
Specific Gravity Enter the specific gravity of the product to be added.
Accumulator Volume Enter the volume of water passing through the water meter to trigger the chemical feed.
Flow Input Select the flow meter to be used as an input for this control relay.
Flow Input 2 Select the second flow meter, if any, to be used as an input for this control relay.
Cycles Input Select the virtual input that is programmed as a Ratio calculation of the system
conductivity/makeup conductivity, or select None.
Low Cycles Limit Enter the lower limit for cycles of concentration, if used. The calculated on-time is
limited to a maximum value if the cycles of concentration gets too low.
Disturbance Input Select the virtual input or control output that will multiplied by the control setpoint
(Target ppm setpoint). A typical application for this is to use a corrosion sensor as the
disturbance input to adjust the PPM setpoint.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.20 Relay, PPM by Volume Control Mode

ONLY AVAILABLE IF HVAC MODE IS ENABLED. NOT AVAILABLE FOR VIRTUAL OUTPUTS.
Overview
In PPM by Volume control mode, the controller monitors the total volume of flow through up to two analog or
digital flow meters, and after a programmable volume has been accumulated, the relay activates until the calculated
number of pulses from a flow monitoring device to achieve a target PPM level are received.
The user enters the target PPM, the volume of water to trigger the chemical feed, and the data necessary to calculate
the volume of chemical required to maintain the target PPM in that volume of water. The Feed Monitoring device
programming (volume/pulse, assignment of the device to a relay output) is entered in the Feed Monitor digital
input menus.

Volume to Feed (gal or l) = Accumulated Volume (gal or l) x Target PPM

Cycles x Specific Gravity x 106

Volume to Feed (l) = Accumulated Volume (m3) x Target PPM

(Cycles x Specific Gravity x 106) x 1000

Control Operation
As flow accumulates, the controller updates a field called Accumulator Total. When this value is greater than or
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equal to the value set for the Accumulator Volume, the relay activates for the calculated number of pulses from the
feed monitor, and the accumulated total is reduced by the accumulator volume amount.
If the trigger volume is achieved again before the activation time has expired, the newly calculated feed monitor
pulses per unit volume are added to the remaining number. If the relay state is continuously on for longer than the
Output Time Limit, then relay will deactivate.
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, total accumulated
on-time, alarms related to this output, current cycle on time, remaining feed volume, accumulator total, cycles of
concentration, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay
Target Enter the desired PPM set point for the product.
Specific Gravity Enter the specific gravity of the product to be added.
Accumulator Volume Enter the volume of water passing through the water meter to trigger the chemical feed.
Flow Input Select the flow meter to be used as an input for this control relay.
Flow Input 2 Select the second flow meter, if any, to be used as an input for this control relay.
Cycles Input Select the virtual input that is programmed as a Ratio calculation of the system
conductivity/makeup conductivity, or select None.
Low Cycles Limit Enter the lower limit for cycles of concentration, if used. The calculated on-time is limited
to a maximum value if the cycles of concentration gets too low.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.21 Relay, Counter Timer Control Mode

ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU ­­­– GLOBAL SETTINGS
The Counter Timer algorithm activates the relay for a programmable amount of time, triggered by the accumula-
tion of a programmable number of contact closures from a Digital Counter type input.
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, time on, remain-
ing on-time, accumulator total, total relay activation time, alarms related to this output, relay type and the current
control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Feed Duration Enter the amount of time for the relay to activate for once the accumulated setpoint
number of contact closures has been reached.
Accumulated Setpoint Enter the number of contact closures required to trigger the relay activation.
Input Select the input to be used to control this output.

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Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.22 Relay or Control Outputs, On/Off Disturbance Control Mode

On/Off control mode is enhanced to add a disturbance input that is multiplied by the user-entered setpoint. An ex-
ample of this might be the control of a corrosion inhibitor containing PTSA based upon a fluorometer sensor input,
with the setpoint modified based upon a corrosion sensor Disturbance Input, so a higher corrosion reading results
in more corrosion inhibitor being fed. Another example might be cooling tower conductivity control on cycles of
concentration, with the cycles setpoint modified by a Disturbance Input of Makeup Conductivity.
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, input value, current setpoint, disturbance input value,
relay type, and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Set point Enter the sensor process value at which the relay will activate.
Deadband Enter the sensor process value away from the set point at which the relay will
deactivate.
Duty Cycle Period Using a duty cycle helps to prevent overshooting the set point in applications where the
response of the sensor to chemical additions is slow. Specify the amount of time for the
cycle, and the percentage of that cycle time that the relay will be active. The relay will
be off for the rest of the cycle, even if the set point has not been satisfied.

Enter the length of the duty cycle in minutes:seconds in this menu. Set the time to 00:00
if use of a duty cycle is not required.
Duty Cycle Enter the percentage of the cycle period that the relay will be active. Set the percentage
to 100 if use of a duty cycle is not required.
On Delay Time Enter the delay time for relay activation in hours:minutes:seconds. Set the time to
00:00:00 to immediately activate the relay
Off Delay Time Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to
00:00:00 to immediately deactivate the relay
Input Select the sensor to be used by this relay.
Direction Select the control direction.
Disturbance Input Select the virtual input or analog output to be multiplied by the control setpoint.

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Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.23 Relay or Control Outputs, Volumetric Blending Control Mode

Volumetric Blending is used to mix two liquid streams together at a fixed ratio. The relay controls a diverter valve
that alternates between two sources, metering in a programmable accumulator volume when the relay is deactivat-
ed, and then switches to a programmable blend volume when the relay is activated.
This control mode includes an optional disturbance input that is multiplied by the user-entered blend volume. A
common example is to mix two cooling tower makeup water sources, and then to use the makeup conductivity as a
disturbance input to adjust the ratio.
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, relay type, and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Accumulator Volume Enter the volume through the flow meter with the relay deactivated.
Blend Volume Enter the volume through the flow meter with the relay activated.
Flow Input Select the flowmeter input to be used to control this output.
Disturbance Input Select the virtual input or analog output to be used to multiplied by the control setpoint
(Blend Volume).
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.24 Relay or Control Outputs, Dual Switch Control Mode

Dual Switch mode is typically used to fill or empty a tank, using a level switch contact closure to activate the relay
when the liquid level is at one extreme and deactivate the relay at the other extreme. It is more versatile than that;
the on and off triggers may be any digital input or relay output state.
Note that the Dual Switch control relay will only respond to trigger relay state changes that occur when that relay
is in Auto mode, not if the trigger is activated manually using Hand or Off modes.
Output Details
The details for this type of output include the relay on/off state, HOA mode Interlock or delay status, current cycle
on time, time on over the past 24 hours, the total accumulated on-time since the last reset, alarms related to this
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output, relay type, and the current control mode setting.

Settings
Touch the Edit icon to view or change the settings related to the relay.
On Switch Select the digital input or output that will trigger the relay to activate.
Activate On Select the state of the digital input or output that will trigger the relay to activate.
On Delay Time Enter the delay time for relay activation in hours:minutes:seconds. Set the time to
00:00:00 to immediately activate the relay.
Off Switch Select the digital input or output that will trigger the relay to de-activate.
Activate Off Select the state of the digital input or output that will trigger the relay to deactivate.
Off Delay Time Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time to
00:00:00 to immediately deactivate the relay.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.25 Relay or Control Outputs, Boolean Logic Control Mode

In Boolean Logic control mode, the output is activated based on the state of two inputs, using AND, OR, or Inverse
operators. The inputs to the algorithm can be the state of relay or virtual outputs, as well as the state of digital or
remote Modbus digital inputs. If more than two state inputs are necessary, a virtual Boolean output can be used as
an input to another Boolean control relay.
Output Details
The details for this type of output include the relay on/off state, HOA mode Interlock or delay status, current cycle
on time, time on over the past 24 hours, the total accumulated on-time since the last reset, alarms related to this
output, relay type, and the current control mode setting.

Settings
Touch the Edit icon to view or change the settings related to the relay.
Operation Select the operation to use to activate the relay. Choices are Input 1 AND Input 2,
Input 1 OR Input 2, and Inverse Input.
Input 1 Select the digital input or output that will be used as Input 1 in the Operation used
to trigger the relay to activate.
Activate Select the state of the digital input (open or closed) or output (on or off) that will
be used as Input 1 in the Operation used to trigger the relay to activate.
Input 2 Not available for Inverse Operation. Select the digital input or output that will be
used as Input 2 in the Operation used to trigger the relay to activate.
Activate Not available for Inverse Operation. Select the state of the digital input
(open or closed) or output (on or off) that will be used as Input 2 in the Operation
used to trigger the relay to activate.
On Delay Time Enter the delay time for relay activation in hours:minutes:seconds. Set the time to
00:00:00 to immediately activate the relay.

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Off Delay Time Enter the delay time for relay deactivation in hours:minutes:seconds. Set the time
to 00:00:00 to immediately deactivate the relay.
Alarm Select if activation or deactivation of the Boolean Logic output should produce an
alarm or not.
Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that
the relay can have between midnight and midnight the next day. If the time is
exceeded, the relay will deactivate, and a Daily Max Timeout alarm will be trig-
gered. The alarm will clear, and relay allowed to reactivate at midnight the next
day.

If the relay was in Hand mode when the alarm was triggered, it will revert to
whichever HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.26 Relay or Analog Output, Lag Control Mode

NOT AVAILABLE FOR VIRTUAL OUTPUTS
Overview
The Lead Lag control mode allows a group of outputs to be controlled by a single control algorithm using a variety
of configurations. The control mode support backup pumps operation, alternate pump with wear leveling, and the
activation of additional outputs after a time delay, or based on alternate set points, or based on digital state changes.

A Lead Lag group consists of a single Lead output and one or more Lag outputs. The Lead output can be set to any
control mode. The new Lag control mode can be selected for any number of additional outputs (limited only by the
number of outputs available within the controller). A setting for each Lag output allows selection of a Lead output
that is used to create an ordered group of Lead Lag relays.

Example: R1 is an On/Off relay, R2 is set for Lag mode with a Lead output of R1. R3 is set as an additional
Lag mode relay with a Lead output of R2, thus creating an ordered chain of three relays in the Lead Lag group
(R1←R2←R3). After the group is defined, the Lead output (R1) operates with the standard On/Off Control func-
tionality. The last Lag mode relay in the chain (R3) offers various settings that are used to define the desired control
operations for the entire Lead Lag group. Selectable Lead Lag control options include backup, wear leveling, and/
or activating additional outputs based on various criteria.

Backup Pump Control

By default, Lead Lag groups always provide backup operation if the Lead control mode determines that its output
should be energized but it is disabled due to a Flow Verify alarm and/or because the Lead output HOA setting is
Off or Hand (not in Auto mode).

Wear Leveling Modes

The order of Lead and Lag output activation can be changed based on configurable wear leveling modes. This
option is intended to allow users to manage the usage of primary and secondary pumps within a system. One wear
leveling mode selects a different output each time the group is activated. Additional modes vary the activation of
the pumps within the group based on the time-on for each output, with the intent to either balance the usage of
each pump or to energize the primary output most often and periodically exercise auxiliary pumps to insure proper
operation when they are needed.

Output Activation Modes

Depending on the control mode selected for the Lead output, Lag output(s) can be configured for activation of
additional outputs based on one or more of the following criteria:
On-time (for example, energize a second relay 10 minutes after the primary relay is turned on)
Control set points (for example, energize a second relay if the pH continues to rise)

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Switch change (for example, energize a second pump to maintain a tank level when the low-low level switch opens

Control Operation
Backup Pump Control
The default control operation for the Lead Lag group is that if a condition exists that prevents one relay from being
activated, it is skipped and the next output in the group is turned on instead. This situation may occur if the output
is experiencing an active Flow Verify alarm or the output is not in Auto mode. Backup control using a Lag output
does not require any additional settings and could be used to create an output for a backup pump to be activated
only if the main pump loses prime and/or is taken out of service for maintenance.

Example: A Lead Lag group consisting of R1, R2 & R3 is configured (R1←R2←R3). All three pumps have Posi-
Flow monitors wired to inputs D1, D2 & D3, respectively. R1 uses On/Off mode to control caustic feed to maintain
a pH set point above 7.0. R1 and R3 pumps are in Auto mode, R2 pump has been taken out of service for mainte-
nance and is currently in HOA Off mode. The process pH falls below 7.0 and R1 is energized. Before the pH rises
to satisfy the dead band, the D1 PosiFlow input monitors an error condition and activates a Flow Verify alarm for
the R1 pump. The Lead Lag system de-energizes R1 and checks the status of R2. Because R2 is not is service, R3
is energized to maintain caustic feed.

Each digital input channel set up as a Feed Monitor type has a Flow Alarm Mode setting used to specify how the
pump output is handled when Flow Verify alarms are identified. Based on this setting, the Lead Lag group responds
as follows:
Disabled The Flow Verify alarm is never activated and the Lead Lag group is not affected by
the status of the PosiFlow input.
Interlock When a Flow Verify alarm is activated, the related output is immediately turned
off; if available, other outputs in the Lead Lag group are activated instead.
Maintain When a Flow Verify alarm is activated, other outputs in the Lead Lag group are ac-
tivated instead if they are available; if no other outputs are available, or if addition-
al outputs are required due to Output Activation Mode settings, output(s) reporting
a Flow Verify alarm may still be activated as a last resort.

Wear Leveling Modes

After the Lead Lag group is defined, additional parameters can be configured within the settings list of the last out-
put in the group. These options optimize the behavior of the Lead Lag functionality. Several different wear leveling
options can be selected to control the order in which outputs are activated.
Disabled
The order in which the Lead and Lag outputs turn on does not change automatically. They are always energized in
the same order.
Duty Based
The order in which outputs are activated changes every time the Lead output is activated. How long each individu-
al pump has been running is not considered.
Example: When the Lead output, set for On/Off control, drops below the setpoint, R1 is activated. R1 turns off
after its deadband is satisfied. The next time the measurement goes below the setpoint, R2 is activated and R1
remains off. After all outputs in the group have been exercised for one feed cycle, the process begins again with the
first output (R1).

Time Balanced
Time balanced mode alternates outputs in a manner that equalizes the runtime of all connected pumps. This mode
takes into account how long each output in the Lead Lag group has been running (since a manual reset) and selects
the output that has the lowest on-time during each cycle. If the output remains energized longer than the specified
cycle time, the time-on for each output is recalculated and a different output may be activated to balance the usage
of each.
Example: In a two-pump Lead Lag group, time balanced wear leveling is selected with a cycle time of 2 hours.
93
When the Lead control mode (R1) determines the output should be activated, R2 turns on because it has the lowest
accumulated on-time. After 2 hours, if the output remains activated, the on-times are re evaluated and R2 turns off
and R1 turns on because it now has the least accumulated total on time. The cycle continues until the Lead control
mode determines the feed is complete.

Time Unbalanced
This wear leveling mode improves fault-tolerance of the group by varying the wear on each pump by activating
each pump for a different percentage of time. In this mode, a primary output is activated most of the time and sec-
ondary (auxiliary) output(s) are activated for a smaller percentage of the total output on-time. This strategy can be
useful to ensure that a backup pump is exercised sufficiently so that it will be functional when needed, but does not
wear at the same rate as the primary pump to minimize the chances of both pumps failing at the same time. When
one Lag pump is defined within the Lead Lag group, the Lead pump runs 60% of the time and the Lag pump runs
40%. If more than two (2) pumps are defined for the group, fixed ratios are used to insure all pumps are exercised
periodically and wear at different rates, as shown in the chart.

Percent On Number of Relays

Relay 2 3 4 5 6
1 60.0% 47.4% 41.5% 38.4% 36.5%
2 40.0% 31.6% 27.7% 25.6% 24.4%
3 21.1% 18.5% 17.1% 16.2%
4 12.3% 11.4% 10.8%
5 7.6% 7.2%
6 4.8%

Output Activation Modes

Depending on the current control mode selection for the Lead output, additional settings may be available within
the settings list of the last output in the group to provide additional option(s) to optimize the behavior of the Lead
Lag functionality. Several different activation modes can be selected to control the status of additional output(s)
based on either elapsed time, alternate setpoints, and/or alternate switch inputs.

Disabled
No action is taken to activate more than one output within the Lead Lag group of outputs. This mode is used when
a group of Lead Lag outputs exists only to provide backup in case of a Flow Verify failure on one of the pumps, or
if a pump is taken out of service, and/or if only wear leveling is desired.

Time Based
Lag outputs are activated following the Lead output after a user-settable delay. The same delay value is used for
all outputs. This menu selection is available only when the Lead output is using On/Off, Dual Setpoint, Spike or
Manual control modes.

Example: If the Lead output is set to Manual, this control option could be used to force on the output based on a
digital input signal (e.g., level switch). If the level switch remains open for more than the specified delay time, the
second output in the Lead Lag group is energized. If another delay time elapses, a third output (if available) is also
turned on.

In On/Off, Dual Setpoint, or Spike control modes, additional pump(s) are energized if the process value remains
outside the setpoint range for more than the specified delay time.
Example: In a two-output Lead Lag group (R1←R2), the Lead (R1) output, set for Dual Setpoint control, is pro-
grammed to energize its output when the D.O. reading is outside the 4.0-4.5 ppb control range with a deadband of
0.1 ppb. Time based output activation is selected with a delay time of 15 minutes. When the D.O. value falls below
4.0 ppb, R1 is activated. After 15 minutes, if the D.O. has not risen to 4.1 ppb or higher, R2 will also be activated.
When the process value reaches 4.1 ppb, both outputs are turned off.
Setpoint Based
Each Lag output has its own setpoint(s) and deadband when this option is selected. The setpoints for each output
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in the Lead Lag group are evaluated individually and outputs are added as needed based on the current process
value. Setpoint based activation mode also incorporates time based activation and can also be configured to trigger
an additional pump (if available) after a specified delay time. This menu selection is available only when the Lead
output is using On/Off or Dual Setpoint control modes.

Example 1: The Lead output (R1) is set for On/Off control of pH with a setpoint of 8.50, a deadband of 0.20 and
a “force lower” control direction. The first Lag output (R2) has a setpoint of 9.00 and a deadband of 0.20. The
second Lag output (R3) has a setpoint of 9.50 and a deadband of 0.20. The delay time is disabled (set for 0:00 min-
utes). Wear leveling is disabled. When the pH goes above 8.50, R1 energizes. If the pH proceeds to exceed 9.00, R2
energizes. And if the pH rises above 9.50, R3 energizes. When the pH decreases to below 9.30, R3 goes off. When
the pH falls to below 8.80, R2 goes off. And finally, when the pH decreases to below 8.30, R1 is turned off.

Example 2: The same three-pump configuration (R1←R2←R3) as in Example 1 except the delay time is set for 30
minutes. When the pH goes above 8.50, R1 energizes. If 30 minutes passes before the pH exceeds 9.00 or drops
below 8.30, R1 remains on and R2 is energized. If the pH then rises above 9.00, the next output in the group, R3, is
energized. If the pH continues to rise and exceeds 9.50, no additional action is possible. When the pH decreases to
below 8.80, R3 goes off. When the pH falls to below 8.30, both R1 and R2 are turned off.

This control is very similar to the operation if three (3) separate On/Off control outputs are configured all with the
pH as Input and using the setpoints listed above. However, the Lead Lag option improves on this control by incor-
porating backup pump controls and optional time based activation. If the pH rises above 8.50 when pump R1 has
an active Flow Verify alarm or is in HOA Off mode, pump R2 immediately energizes. R3 energizes when the pH
goes above 9.00. Although no third pump is available to activate if the pH continues to rise above 9.50, this control
system is more fault tolerant than the currently available options.

Switch Based
When using switch based activation mode, each Lag output has an Activate With Channels setting that is used
to specify one or more digital input or relay output channels that activates an additional output. Switch based
activation mode incorporates time based activation and can also be configured to trigger an additional output (if
available) after a specified delay time. This menu selection is available only when the Lead output is using Manual
control mode.
Example 1: A lift station includes a tank with a high level switch (D1) and a high-high level switch (D2). Three
pumps are configured as a Lead Lag group (R1←R2←R3). The Lead output (R1) is set for Manual control mode
with an Activate With Channels selection of D1 (high level switch), R1 will be energized if D1 closes. The first Lag
output (R2) has an Activate With Channels selection of D2 (high-high level switch). The last Lag output (R3) has
no Activate With Channels selected. All pumps are in HOA Auto mode. The delay time is disabled (set for 0:00
minutes). Wear leveling is disabled. When the high level switch closes, the R1 pump is activated. If the high-high
level switch closes, the R2 pump is also activated. When D2 opens, R2 is turned off. When D1 opens, R1 is turned
off. In this configuration, the R3 pump serves only as a backup in case one of the pumps is down for maintenance
(in HOA Off mode).

Example 2: The same lift station, two-level switches, three-pump configuration (R1←R2←R3) as in Example 1
except the delay time is set for 1 hour. When the high level switch closes, the R1 pump is activated. If the high-high
level switch closes, the R2 pump is also activated. If the tank level remains above the high-high level switch for
another 1 hour, the R3 pump is activated. When D2 opens, R3 is turned off. When D1 opens, both R2 and R1 are
turned off. In this configuration, the R3 pump serves not only as a backup in case one of the pumps is down for
maintenance, but also provides additional capacity should it be needed.

Advanced Functionality
The examples listed above detail the control behavior if wear leveling or output activation modes are enabled. The
features are implemented independently. Wear Leveling modes are used to determine which output(s) are activated.
Output Activation modes determine how many output(s) are activated at one time. More advanced output control
strategies can be implemented when these features are used in combination.

Example: In a two-pump scenario, the Lead output (R1) is set for On/Off control of pH with a setpoint of 8.50,
deadband of 0.20 and a “force lower” control direction. The Lag output (R2) has a setpoint of 9.00 and a dead-
95
band of 0.20. Time unbalanced (60/40) wear leveling is selected with a cycle time of 15 minutes. When the pH goes
above 8.50, the on-times for each pump are evaluated. If R1 has been on less than 80% of the total time for the two
pumps, it is energized. Otherwise, R2 has been on for less than 20% of the total time, so it is energized. If the pH
remains above the deadband and does not exceed the second setpoint (8.30 < pH < 9.00), the pump selection is
re-evaluated every 15 minutes and, if warranted, the pump in operation is switched. If the pH proceeds to exceed
9.00, both pumps are energized and wear leveling is no longer a consideration. When the pH fails to below 8.80,
the pump on-times are again evaluated and the appropriate pump is turned off.

Note that while this control is quite powerful, it might cause confusion with users because the setpoints entered
for a specific pump within the Lead Lag group may not coincide with the setpoints used to activate that particular
pump during operation. The information shown on the Details pages for each pump should be sufficient to mini-
mize this ambiguity.
Control Mode Conflicts
Some control modes are incompatible with Lag output functionality because of an interactive relationship between
the output and one or more linked inputs:

• Intermittent Sampling – This control mode places a linked sensor into a Hold state during most of its operational
cycle
• Probe Wash – This control mode places one or two linked sensors into a Hold state when a wash cycle is in
progress and for a specified Hold period afterward

The link between the output and the sensor input(s) cannot be easily transferred to other outputs, so these types of
control modes cannot be designated as Lead output for a Lead Lag group. Outputs configured with these types of
control modes are not included on the selection list presented for Lead output. Also, the control mode of an output
that is the Lead output for a Lead Lag group cannot be changed to one of these types. If selected, the controller will
be unable to save the change and an error message will be added to system log.

Output Details
The details for this type of output include the relay on/off state, relay status (HOA mode, Interlock from sensor cal-
ibration, probe wash, or other condition), the current cycle and the total on-times, alarms related to this output, the
output defined as the Lead of the group, the output that is the Last Lag output of the group, the number of outputs
currently energized within the group, the elapsed time since the last change in the number of outputs energized, the
elapsed time since the last wear leveling evaluation, the type of output, and the current control mode setting.

Settings
Touch the Edit icon to view or change the settings related to the output.
The Lag control mode output defined as the Last Lag within the Lead Lag group offers settings to define the pa-
rameters controlling operation of the entire group.

All Lag mode outputs that are not the Last Lag output in the Lead Lag group (those that are selected as a Lead
output from another Lag mode output) offer a more limited list of settings.
Lag Settings (Menus with * are shown only in the Last Lag output settings)

HOA Setting Select Hand, Off or Auto mode by touching the desired mode
Lead Select the output that will be the lead output for this relay
Wear Leveling* Select the wear leveling scheme to use. Refer to the detailed description above.
Wear Cycle Time* This setting only appears if Time Balanced or Time Unbalanced Wear Leveling has
been selected above. Enter the amount of elapsed time before time on totals for each
output are reevaluated for wear leveling.
Activation Mode* This entry is only appears if the control mode of the Lead output is On/Off, Dual
Setpoint, Spike or Manual. Select one of the options that will determine if and when an
additional output will be activated if the primary output is unable to reach the setpoint.

96
Set point This setting only appears if the control mode of the Lead output is On/Off or Dual
Setpoint and the Activation Mode above is Setpoint Based.
Enter the process value for the input assigned to the Lead output that will trigger an
additional output to activate.
Set point 2 This setting only appears if the control mode of the Lead output is Dual Setpoint and
the Activation Mode above is Setpoint Based.
Enter the process value for the input assigned to the Lead output that will trigger an
additional output to activate.
Deadband This setting only appears if the control mode of the Lead output is On/Off or Dual
Setpointand the Activation Mode above is Setpoint Based.
Enter the sensor process value away from the set point(s) at which the relay will
deactivate.
Delay Time* This setting only appears if the control mode of the Lead output is On/Off, Dual
Setpoint, Spike or Manual.
Enter the amount of time, if any, to delay the activation of the output.
Activate With Channels This setting only appears if the control mode of the Lead output is Manual and the
activation mode is Switch Based.
Select one or more digital input and/or relay output channels that, if activated, will also
activate the Lag output
Reset Time Total Enter this menu to clear the accumulated time that the output has been activated. This
value is used for Time Balanced or Time Unbalanced wear leveling.
Output Time Limit Enter the maximum amount of time that the relay can be continuously activated. Once
the time limit is reached, the relay will deactivate until the Reset Output Timeout menu
is entered.
Reset Output Timeout Enter this menu to clear an Output Timeout alarm and allow the relay to control the
process again.
Name The name used to identify the relay may be changed.
Mode Select the desired control mode for the output.

Several standard settings that are available for most control modes are not available for Lag outputs. These features
affect the entire Lead Lag group and can be specified only within the Lead output’s settings. The settings for these
fields are propagated down through the entire Lead Lag group when changed for the Lead output. Although the
settings for these fields are identical for all outputs in the Lead Lag group, the handling by each Lag output may be
independent or group-managed.

Below are the settings that are in the Lead Relay settings that will affect the Lead Lag group:
Interlock Channels Select the relays and digital inputs that will interlock this relay and all others in the
group.
Min Relay Cycle Enter the number of seconds that will be minimum amount of time that each relay in
the group will be in the active or inactive state.
Normally this will be set to 0, but if using a motorized ball valve that takes time to
open and close, set this high enough that the valve has time to complete its movement.
Hand Time Limit Enter the amount of time that each relay in the group will activate for when it is in
Hand mode.
Hand Output This menu only appears for pulse relay or analog output Lead outputs.
Enter the output % desired for each output in the group when the output is in Hand
mode.

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Off Mode Output This menu only appears for analog output Lead outputs.Enter the output mA value de-
sired for each output in the group when the output is in Off mode, or being Interlocked,
or during a calibration of the sensor being used as an input. The acceptable range is 0 to
21 mA.
Error Output This menu only appears for analog output Lead outputs.Enter the output mA desired for
each output in the group when the sensor is not giving the controller a valid signal. The
acceptable range is 0 to 21 mA.

The Activate With Channels setting, normally available for all outputs, is not propagated through the Lead Lag
group. This field can be entered independently for each Lag Output when the control mode of the Lead output is
Manual and the activation mode is Switch Based.

Most other settings for the various types of Lead control modes are managed independently from other outputs
within a Lead Lag group. In most cases, no Activation Mode settings are available, so the Lead output determines
the status for the entire group based on its settings and the current controller parameters. However, when an
Activation Mode is enabled, the handling of some settings may require some additional explanation. For example,
• Duty Cycle - If a Lead output with a control mode of On/Off or Dual Setpoint has a Duty Cycle setting of less
that 100%, this cycle will be managed for the Lead output only. The Duty Cycle will drive other Lag
• outputs for Backup or Wear Leveling purposes. However, if additional Lag Output(s) are energized due to
• Setpoint-Based or Time-Based Activation Mode settings, the additional outputs will operate independently of
the Duty Cycle setting. The Lead output will continue to cycle On and Off, however, the additional outputs
• will remain activated with 100% duty cycle until the setpoint deadband is satisfied.
• On Delay / Off Delay - If the Lead output with a control mode of On/Off, Dual Setpoint, or Manual has ei-
ther an On or Off Delay Time setting specified, the delay will be managed for the Lead output only. If one or
more Lag outputs provide Backup or Wear Leveling support, the Delay Times would also effect these outputs.
However, if additional Lag Output(s) are energized due to Activation Mode settings, the additional outputs will
operate independently of the On or Off Delay Time setting(s) and will energize and de-energize without delay
when needed.

5.3.27 Relay or Control Outputs, Flow Meter Ratio Control Mode

ONLY AVAILABLE IF HVAC MODES ARE ENABLED IN CONFIG MENU – GLOBAL SETTINGS
Flow Meter Ratio Control Mode is typically used in cooling water applications to control the conductivity of
the water using volumetric cycles of concentration. The controller measures the volume of makeup water going
through one or two water meters, and after a programmable amount, activates the relay to control a programmable
volume out through one or two bleed water meters.
Output Details
The details forq this type of output include the relay on/off state, HOA mode or Interlock status, Accumulated
makeup water total, bleed cycle volume, remaining volume, relay on-time for this cycle, accumulated on-time,
alarms related to this output, relay type, and the current control mode setting.

Settings
Touch the Edit icon to view or change the settings related to the output.
Accumulator Volume Enter the volume through the makeup water meters that will activate the relay.
Bleed Volume Enter the volume through the bleed water meters that will deactivate the relay.
Makeup Meter Select the makeup water meter from the pulldown list.
Makeup Meter 2 Select the makeup water meter from the pulldown list, if applicable, or leave at None.
Bleed Meter Select the bleed water meter from the pulldown list.
Bleed Meter 2 Select the bleed water meter from the pulldown list, if applicable, or leave at None.

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Daily Max Time Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that the
relay can have between midnight and midnight the next day. If the time is exceeded, the
relay will deactivate, and a Daily Max Timeout alarm will be triggered. The alarm will
clear, and relay allowed to reactivate at midnight the next day.

If the relay was in Hand mode when the alarm was triggered, it will revert to whichever
HOA state it was in prior to being set to Hand.

To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.

5.3.28 Relay or Analog or Control Outputs, Disturbance Variable Control Mode

Only available for 4-20 mA and pulse relay output channels.
These control modes generate an output by combining contributions from a Primary control output, a Disturbance
Input, and a Trigger Input in a variety of ways. When the disturbance trigger discrete input is active, the distur-
bance input is multiplied by the primary output to determine the control percent output. An alternate calculation
trigger mode selection (Use Disturbance) is available to simply switch to the disturbance output when the trigger is
active (rather than combine the two values).

Some Example Applications

In-Line pH Control Adjusted for Flow
Direct feedback pH control in a pipe using a Primary Output of PID or Proportional control mode, with the Dis-
turbance Input using flow rate to provide a multiplier to adjust the output. This is primary feedback control with a
feedforward trim. No Trigger is required.
Chemical feed in proportion to Flow Adjusted for pH
If the incoming flow is variable but the pH of the water is relatively constant, feed the chemical using Flow Propor-
tional control mode, with the Disturbance Input using the pH reading to provide a multiplier to adjust the output.
This is primary feedforward control with a feedback trim. No Trigger is required.
Alternate Control During Upset Condition
Some disturbance applications require switching from one control mode to a different control mode (or a similar
mode with different control settings) during an upset condition. The Primary Output could be set to Proportional
control of pH, with the Disturbance Input selected as a Flow Proportional control algorithm. A Trigger Input could
be selected as a relay output that activates if the flow rate is either too high or too low. These conditions would
trigger a switch from pH control to flow based control.

Output Details
The details for this type of output include the % output, HOA mode or Interlock status, alarms related to this
output, Primary Output %, Disturbance Input value, current cycle on-time, accumulated on-time, raw output (in
mA or pulses/min.), relay type, and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the output.
Minimum Output Enter the lowest output %. If the output should be off at the set point, this will be 0%.
Maximum Output Enter the highest output %.
Hand Output Enter the output % desired when the output is in Hand mode.
Off Mode Output Only for analog outputs. Enter the output mA value desired when the output is in Off
mode, or being Interlocked, or during a calibration of the sensor being used as an input.
The acceptable range is 0 to 21 mA.

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Maximum Rate Only for pulse outputs. Enter the maximum pulse rate that the metering pump is designed
to accept (10 - 360 pulse/minute range).
Error Output Only for analog outputs. Enter the output mA desired when the sensor is not giving the
controller a valid signal. The acceptable range is 0 to 21 mA.
Primary Output Select the control output that will be used along with the disturbance input to calculate the
control signal for the disturbance output.
Disturbance Input Select the virtual input or analog output that will be used along with the Primary Output
to calculate the control signal for the disturbance output.
Trigger Input Select a state-type digital input or relay output that will be used to initiate the disturbance
control, or select None if the disturbance control will be active all the time.
Activated Only appears if the Trigger Input is other than None. If a digital input is the Trigger
Input, select between When Open or When Closed. If a relay output is the Trigger
Input, select between When On or When Off.
Trigger Mode Only appears if the Trigger Input is other than None. Select the action to take when the
disturbance control algorithm has been activated. Multiply is used to calculate the control
signal by multiplying the Disturbance Input value by the primary control output value.
Use Disturbance is used when the Disturbance Input selected is a control output, and the
action desired is to use this different control algorithm when in the disturbance state.

5.3.29 Analog or Control Outputs, Proportional Control Mode

Output Details
The details for this type of output include the output %, HOA mode or Interlock status, accumulated on-time,
alarms related to this output, current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the output.
Set point Enter the sensor process value at which the output % will be the programmed minimum %.
Proportional Band Enter the sensor process value away from the set point at which the output % will be
the programmed maximum %.
Minimum Output Enter the lowest output %. If the output should be off at the set point, this will be 0%.
Maximum Output Enter the highest output %.
Hand Output Enter the output % desired when the output is in Hand mode.
Off Mode Output Enter the output mA value desired when the output is in Off mode, or being Interlocked, or
during a calibration of the sensor being used as an input. The acceptable range is 0 to 21 mA.
Error Output Enter the output mA desired when the sensor is not giving the controller a valid signal.
The acceptable range is 0 to 21 mA.
Input Select the sensor input to use for proportional control.
Direction Select the control direction.

5.3.30 Analog or Control Outputs, Flow Proportional Mode

Overview
In Flow Proportional control mode, the controller monitors the rate of flow through an analog or digital flow meter,
and continuously adjusts the analog (4-20 mA) output proportional band to achieve a target PPM level.
The user enters the target PPM and the data necessary to calculate the proportional band (the water flow rate at
which the maximum pulse rate will occur) required to maintain the target PPM with that flow rate of water.

100
 % output = Target PPM x Water Flow Rate (liter/min or gal/min)
Cycles x Pump Rating (liter or gal/hr) x Pump Setting (%) x Specific Gravity x 166.67

% output = Target PPM x Water Flow Rate (m3⁄min)

Cycles x Pump Rating (liter/hr) x Pump Setting (%) x Specific Gravity x 0.16667

Control Operation
If the output is continuously on for longer than the Output Time Limit, then output will deactivate.

Output Details
The details for this type of output include the output %, HOA mode or Interlock status, alarms related to this out-
put, current cycle on time, total accumulated on-time, cycles of concentration, mA output, and the current control
mode setting.

Settings
Touch the Edit icon to view or change the settings related to the output.
Target Enter the desired PPM set point for the product.
Pump Capacity Enter the maximum flow rate for the metering pump.
Pump Setting Enter the stroke length setting for the metering pump, in percent.
Specific Gravity Enter the specific gravity of the product to be added.
Hand Output Enter the output % desired when the output is in Hand mode.
Off Mode Output Enter the output mA value desired when the output is in Off mode, or being Interlocked, or
during a calibration of the sensor being used as an input. The acceptable range is 0 to 21 mA.
Error Output Enter the output mA desired when the sensor is not giving the controller a valid signal.
The acceptable range is 0 to 21 mA.
Flow Input Select the flow meter to be used as an input for this control relay.
Cycles Input Select the virtual input that is programmed as a Ratio calculation of the system
conductivity/makeup conductivity, or select None.
Low Cycles Limit Enter the lower limit for cycles of concentration, if used. The calculated on-time is limited
to a maximum value if the cycles of concentration gets too low.

5.3.31 Analog or Control Outputs, PID Control Mode

ONLY AVAILABLE IF CONTROLLER INCLUDES ANALOG OUTPUT HARDWARE & HVAC MODE IS DISABLED
The PID algorithm controls an analog (4-20 mA) output using standard Proportional-Integral-Derivative control
logic. The algorithm provides feedback control based on an error value continuously calculated as the difference
between a measured process variable and a desired set point. Tuning settings specify the response for proportional
(the size of the error), integral (the time that the error has been present), and derivative (the rate of change for the
error) parameters. With proper tuning, the PID control algorithm can hold the process value close the set point
while minimizing overshoot and undershoot.

Normalized Error
The error value versus set point that is calculated by the controller is normalized and represented as percent of full
scale. As a result, tuning parameters entered by the user are not dependent upon the scale of the process variable
and the PID response with similar settings will be more consistent even when using different types of sensor
inputs.
The scale used to normalize the error is dependent upon the type of sensor selected. By default, the full nominal
range of the sensor is used. This range is editable by the user if tighter control is desired.

101
PID Equation Formats
The controller supports two different forms of the PID equation as specified by the Gain Form setting. The two
forms require different units for entry of the PID tuning parameters.
Standard
The standard form is more commonly used in industry because its time-based settings for the integral and deriva-
tive coefficients are more meaningful. This form is selected by default.
Parameter Description Units
Kp Gain unitless
Ti Integral Time seconds or seconds/repeat
Td Derivative Gain seconds

Output (%) = Kp e(t) +

1
f e(t)dt + Td de(t)
Ti dt
Parameter Description Units
e(t) Current Error % of full scale
dt Delta Time Between Readings seconds
de(t) Difference Between Current Error & Previous Error % of full scale

Parallel
The parallel form allows the user to enter all parameters as Gains. In all cases, larger gain values result in faster
output response. This form is used in the WebMaster controller and is used internally by the Control Module.
Parameter Description Units
Kp Proportional Gain unitless
Ki Integral Gain 1/ seconds
Kd Derivative Gain seconds

Output (%) = Kp e(t) + Ki f e(t)dt + Kd

de(t)
dt
Integral Value Management
To determine the integral component of the PID calculation, the controller software must maintain a running total
of the accumulated area under the error curve (Current Integral). The sign of the value added to the accumulated
Current Integral during each cycle may be positive or negative based on the current Direction setting as well as the
relative values of the current process reading and the set point.
Override Control
The Current Integral accumulates when the output is set to Auto mode. If the controller is switched to Off mode,
the value no longer accumulates, but it is not cleared. Therefore, PID control will resume where it left off if the
controller is switched from Off back to Auto. Similarly, accumulation of the Control Integral will be suspended if
the output is interlocked and resume after the lock-out is removed.
Bumpless Transfer
When the output is switched from Hand to Auto mode, the controller calculates a value for the Current Integral
using the current error to generate the same output percent as the Hand Output setting. This calculation does not
use the Derivative tuning setting to minimize errors from momentary fluctuations in the input signal. This feature
ensures a smooth transition from manual to automatic control with minimal overshoot or undershoot as long as the
user sets the Hand Output percentage close to the value that the process is expected to require for optimal control
in Auto mode.
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Wind-up Suppression
The Current Integral value that is accumulating while the output is set to Auto can become very large or very small
if the process value remains on the same side of the set point for a prolonged period of time. However, the control-
ler may not be able to continue to respond if its output is already set to the minimum or maximum limits (0-100%
by default). This condition is referred to as Control Wind-Up and can result severe overshoot or undershoot after a
prolonged upset has ended.
For example, if the process value remains far below the set point despite a control output being pinned at 100%,
the Current Integral will continue to accumulate errors (wind-up). When the process value finally rises to above the
set point, negative errors will begin to decrease the Current Integral value. However, the value may remain large
enough to keep the output at 100% long after the set point is satisfied. The controller will overshoot the set point
and the process value will continue to rise.
To optimize system recovery after wind-up situations, the controller suppresses updates to the Current Integral
that would drive the output beyond its minimum or maximum limit. Ideally, the PID parameters will be tuned
and the control elements (pump, valves, etc.) will be sized properly so that the output never reaches its minimum
or maximum limit during normal control operations. But with this wind-up suppression feature, overshoot will be
minimized should that situation occur.
Output Details
The details for this type of output include the analog output value in %, HOA mode or Interlock status, input value,
current integral, current and accumulated on-times, alarms related to this output, and the current control mode
setting.

Settings
Touch the Edit icon to view or change the settings related to the output.

Set Point Numeric entry of a process value used as a target for PID control. The default value,
units and display format (number of decimal places) used during data entry are defined
based on the Input channel setting selected.
Gain When the Gain Form setting is Standard, this unitless value is multiplied by the total of
the proportional, integral, and derivative terms to determine the calculated output percent.
Proportional Gain When the Gain Form setting is Parallel, this unitless value is multiplied by the normalized
error (current process value versus set point) to determine the proportional component of
the calculated output percent.
Integral Time When the Gain Form setting is Standard, this value is divided into the integral of the
normalized error (area under the error curve), then multiplied by the Gain to determine
the integral component of the calculated output percent.
Integral Gain When the Gain Form setting is Parallel, this value is multiplied by the integral of the
normalized error (area under the error curve) to determine the integral component of
the calculated output percent.
Derivative Time When the Gain Form setting is Standard, this value is multiplied by the change in error
between the current reading and the previous reading, then multiplied by the Gain to
determine the derivative component of the calculated output percent.
Derivative Gain When the Gain Form setting is Parallel, this value is multiplied by the change in error
between the current reading and the previous reading to determine the derivative com-
ponent of the calculated output percent.
Reset PID Integral The PID Integral Value is a running total of the accumulated area under the error curve
(Current Integral). When this menu option is selected, this total is set to zero and the
PID algorithm is reset to its initial state.
Minimum Output Enter the lowest possible output value (normally 0%).
Maximum Output Enter the highest possible output value as a percentage.

103
 Off Mode Output Enter the output mA value desired when the output is in Off mode, or being Inter-
locked, or if the Output Time Limit has expired, or during a calibration of the sensor
being used as an input. Also if there is a Probe Wash programmed for the sensor, and
the Sensor Mode option is set to Disable the output during the Wash cycle (if the Sen-
sor Mode option is set to Hold the output holds its last setting and the Integral is not
updated during the Wash). The acceptable range is 0 to 21 mA.
Error Output Enter the output mA desired when the sensor is not giving the controller a valid signal.
The acceptable range is 0 to 21 mA.
Input Select the sensor to be used by this output.
Direction Set the control direction. This setting is used to determine the sign of the calculated
error (current process value versus set point) and allows flexible control with only
positive values for all PID tuning parameters.
Input Minimum The low end of the sensor input range, used to normalize errors into percent of full scale
units. These values are set to the nominal range of the selected input sensor by default.
Input Maximum The high end of the sensor input range, used to normalize errors into percent of full scale
units. These values are set to the nominal range of the selected input sensor by default.
Gain Form Select the PID Equation Format used to enter tuning parameters.

5.3.32 Analog Output, Manual Mode

Output Details
The details for this type of output include the analog output %, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the output.
A Manual analog output will activate if the HOA mode is Hand, or if it is Activated With another channel. There
are no additional programmable parameters

5.3.33 Analog Output, Retransmit Mode

Output Details
The details for this type of output include the output %, HOA mode or Interlock status, accumulated on-time,
alarms related to this output, current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the output.
4 mA Value Enter the process value to correspond to a 4 mA output signal.
20 mA Value Enter the process value to correspond to a 20 mA output signal.
Hand Output Enter the output % desired when the output is in Hand mode.
Error Output Enter the output % desired when the input signal is invalid (Error mode).
Input Select the sensor input to retransmit.

5.4 Configuration Menu

The configuration Settings Menu is used for settings and activities that are not tied to Inputs or Outputs.

5.4.1 Global Settings

Date Enter the current year, month and day.
Time Enter the current hour (military time), minute, and second.
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Name Enter the name to help identify the controller when it connects to Fluent.
Location Enter the location to help identify the controller when it connects to Fluent.
Global Units Select the units to be used for cable length and wire gauge settings, metric or Imperial.
Temperature Units Select between Fahrenheit and Celsius.
Alarm Delay Enter how much time to wait after powering up the controller before alarm conditions are
considered valid.
HVAC Modes Enable HVAC Modes for cooling tower and boiler applications where the relay control
modes for Biocide timer, Bleed and Feed, Bleed then Feed, and Intermittent Sampling
are required. Disable HVAC Modes if these control modes are not necessary and a more
generic timer control mode will replace the Biocide timer.
Language Select the language the software will use.

5.4.2 Security Settings

Controller Log Out When Security is Enabled, and after the password has been entered, the controller requires
immediate use of a password to calibrate or change settings. Once finished making changes,
log out to prevent unauthorized changes by someone else. If not manually logged out, the
controller will automatically log out after 10 minutes of inactivity.
Security Select Enable to require a password in order to calibrate or change settings, or Disable to
allow calibration and set point changes without a password. In order to enable security, the
default password must be entered first, then touch Enabled, then touch the Confirm icon.
Local Password Used to change the touchscreen password needed for full configuration capability if security
has been enabled. The default local password is 5555. This can and should be changed using
this menu if Security is enabled.

5.4.3 Ethernet Settings

Will not appear if a WiFi-Only type WiFi card is installed.
Ethernet Status Select Enabled or Disabled
Gateway Connection Only appears if a Dual WiFi/Ethernet type WiFi card is installed. Select which connec-
tion, Ethernet or WiFi, will provide the Gateway function. This means that all external
Internet connections such as Fluent or emails will default to using this connection.

Note that If the selected connection is no longer available, the controller will switch to
DHCP Setting Select Enabled to get an IP address from the LAN or Disabled to use a fixed IP address.
Controller IP Address Enter the default IP address to use if a network is not available or if DHCP is disabled.
Network Netmask Enter the default netmask to use if a network is not available or if DHCP is disabled.
Network Gateway Enter the default gateway address to use if a network is not available or if DHCP is disabled.
DNS Server Enter the default DNS server IP address to use if DHCP is disabled.
Webserver Enter the Webserver menu to manage the webserver encryption
Webserver Mode Select between HTTPS (recommended, web pages will be encrypted), HTTP (web
pages will not be encrypted) and Disabled (no web pages will be served).
SSL Certificate Only appears if Webserver Mode is HTTPS.
Select between Default Cert (which uses a self-signed Walchem certificate) or Upload
PEM which provides a way to enter a certificate of the network IT administrator’s
choice.

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 DNS Name Only appears if Webserver Mode is HTTPS and Default Cert is selected.
The network IT administrator can map the controller numeric IP to a domain name,
which reduces the warning messages that occur when a self-signed certificate is detect-
ed by the browser.
Import SSL Private Only appears if Webserver Mode is HTTPS and Upload PEM is selected.
Key File Insert a USB stick containing the desired Private Key file. The files must be named
private.key, and must be in the root folder on the stick. Enter this menu to import the
file from the stick onto the controller.

If the network IT administrator is installing their own certificates, they must install a
server private key and a server certificate.
Import SSL Server Only appears if Webserver Mode is HTTPS and Upload PEM is selected.
Certificate File Insert a USB stick containing the desired Private Key file. The files must be named
server.crt, and must be in the root folder on the stick. Enter this menu to import the
file from the stick onto the controller.

If the network IT administrator is installing their own certificates, they must install a
server private key and a server certificate.
Import SSL Root Only appears if Webserver Mode is HTTPS and Upload PEM is selected.
Certificate File Insert a USB stick containing the desired Private Key file. The files must be named
root.crt, and must be in the root folder on the stick. Enter this menu to import the file
from the stick onto the controller.

If the network IT administrator is installing a file linked to a trusted certificate author-

ity, then they import the Root Certificate that documents the path or chain of trust that
links the server certificate to an authority, in addition to the private key and server
certificate.
Apply SSL Only appears if Webserver Mode is HTTPS.
Certificate Files Once the Default Cert has been selected, or the PEM files are imported, the network IT
administrator touches “Apply SSL Certificate Files” to force a restart of the webserver
and start using the desired certificate.
Delete SSL Only appears if Webserver Mode is HTTPS and Upload PEM is selected.
Certificate Files Once files have been applied, if changes need to be made and different files need to
be imported, the network IT administrator touches “Delete SSL Certificate Files” to
permanently remove all imported files.
Web Page Color Select between the Light color background and the Dark color background
Scheme
Fluent Alarm Delay Enter the number of minutes to delay in sending out a Fluent Comms Error message if
a data packet is not successfully sent. In order to delay at all, the time must exceed the
Update Period time.
TCP Timeout Do not change from the default of 1 second unless directed to by techical service. The
TCP Timeout should only be increased if the Fluent live connection is being Reset due
to slow cellular connection speed.
Fluent Status Select Enabled to activate a connection to Fluent, or Disabled to stop sending data and
alarms to Fluent.
LiveConnect Status Select Enabled to allow the ability to access the controller programming and log files
remotely using Fluent, or Disabled to prevent remote connection to the controller us-
ing Fluent. The controller can still send data and alarms to Fluent, but the LiveConnect
icon will not appear on the Fluent webpages.
Update Period Enter the time between data updates being sent to Fluent.

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Fluent Alarm Delay Enter the time delay for Walchem Fluent connection alarms
Reply Timeout Enter the maximum time allowed for Fluent to respond.

5.4.4 Ethernet Details

The Ethernet Details are for information only and display the Ethernet settings currently in use, and the recent
history of the Fluent connection. Will not appear if a WiFi-Only type WiFi card is installed.
Alarms Displays any active Ethernet-related alarms
DHCP Status Displays if the connection to the LAN using DHCP was successful or not.
Controller IP Address Displays the IP address that the controller is currently using.
Network Netmask Displays the netmask address that the controller is currently using.
Network Gateway Displays the gateway address that the controller is currently using.
DNS Server Displays the DNS server address that the controller is currently using.
Webserver Displays the level of encryption that the controller is currently using
MAC Address Displays the MAC address of the Ethernet card.
Last Fluent Config Displays the date and time of the last attempt to send configuration data to the Fluent server.
Last Fluent Data Displays the date and time of the last attempt to send a data to the Fluent server.
Live Connect Status Displays the status of the Live Connect tunnel.

5.4.5 WiFi Settings

Will only appear if a WiFi option board is installed.
There are two types of WiFi board that are available.
The WiFi-only type of board will disable the controller’s wired Ethernet connection when it is attached to the con-
troller. The controller will either be able to connect to a Local Area Network (LAN) via Infrastructure Mode, or it
will be able to connect to a PC, tablet, or cell phone via Ad-Hoc Mode. It will not be able to have a wired Ethernet
connection to a LAN or cellular gateway device and also connect to a tablet via Ad-Hoc Mode. This configuration
is inherently more secure.
The dual connection type WiFi cards do not disable the controller’s wired Ethernet connection when it is attached
to the controller. This allows simultaneous connection to a cellular gateway (Ethernet) and a LAN (WiFi, using
Infrastructure mode), or to a LAN (Ethernet) and a nearby PC, tablet or cell phone (WiFi, using Ad-Hoc mode).
This configuration is inherently less secure, since it cannot be guaranteed to be impossible to bridge between the
two connections.
WiFi Mode Select between Infrastructure Mode, Ad-Hoc Mode, or Disabled.
SSID Infrastructure Mode. Enter the SSID of the LAN’s wireless network connection.
Key Infrastructure Mode. Enter the key needed to connect to the LAN’s wireless network
connection.
Gateway Connection Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed.
Select which connection, Ethernet or WiFi, will provide the Gateway function. This
means that all external Internet connections such as Fluent or emails will default to using
this connection.

Note that If the selected connection is no longer available, the controller will switch to
using the other connection. Regardless of the connection being used , the menus to
enable or disable Fluent or Live Connect will be available only in the selected
connection’s menu.

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DHCP Setting Infrastructure Mode. Enable to allow the controller to obtain its IP address and other
network settings from the LAN or disable to enter this information manually.
Controller IP Address Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed,
and the DHCP Setting is set to Disabled. Manually enter the IP address for the |con-
troller.
Network Netmask Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed
and the DHCP Setting is set to Disabled. Manually enter the network netmask address
for the controller.
Network Gateway Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed
and the Gateway Connection is selected as WiFi, and the DHCP Setting is set to |
Disabled. Manually enter the gateway address to be used by the controller when
connected to the LAN.
DNS Server Infrastructure Mode. Only appears if a Dual WiFi/Ethernet type WiFi card is installed
and the Gateway Connection is selected as WiFi, and the DHCP Setting is set to
Disabled. Manually enter the address for the DNS server that the controller will use.
Ad-Hoc SSID Ad-Hoc Mode. Enter the SSID that the controller may broadcast as an available
wireless network connection. The default setting is “ControllerModel_SerialNumber”
Ad-Hoc Security Ad-Hoc Mode. Select the security protocol used by the controller’s wireless network
connection.
Ad-Hoc Key Ad-Hoc Mode. Enter the key needed to connect to the controller’s wireless network
connection. Between 8 and 64 characters are required.
SSID Broadcast Ad-Hoc Mode. Select whether the controller’s wireless network card will broadcast its
SSID or not.
TCP Timeout Do not change from the default of 1 second unless directed to by technical service.
The TCP Timeout should only be increased if the Fluent live connection is being Reset
due to slow cellular connection speed.
Temporary Ad-Hoc Infrastructure Mode. Enable if it is desirable to allow the controller to disconnect from
Infrastructure Mode and switch to a time-limited Ad-Hoc mode, to give a user
temporary access to the controller without allowing that user access to the network.
Begin/End Temporary Infrastructure Mode. Only appears if Temporary Ad-Hoc is Enabled. Press this to start
Ad-Hoc Mode the temporary Ad-Hoc mode connection and timer. The menu will change to
End Temporary Ad-Hoc Mode while the timer is running. Pressing the menu again
will end the Ad-Hoc connection immediately. Otherwise the connection will end when
it times out.
Ad-Hoc Time Limit Infrastructure Mode. Only appears if Temporary Ad-Hoc is Enabled. Enter the time
limit for the temporary ad-hoc mode connection.

5.4.6 WiFi Details

Will only appear if a WiFi option board is installed.
The WiFi Details are for information only and display the network settings currently in use.
WiFi Status Displays if the WiFi is enabled or disabled.
Signal Strength Displays the signal strength in the range of -100 to -30 dBm
RSSI Displays the Relative Signal Strength In percent (0% = -100 dBm and 100% is greater
than -49 dBm).
WiFi Channel Displays the WiFi channel that the controller is currently using.
Alarms Displays any active WiFi-related alarms.
DHCP Status Displays if the connection to the device using DHCP was successful or not.
Controller IP Address Displays the IP address that the controller is currently using.

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Network Netmask Displays the netmask address that the controller is currently using.
Network Gateway Displays the gateway address that the controller is currently using.
Security Protocol Displays the security protocol that the controller is currently using.
DNS Server Displays the DNS server address that the controller is currently using
BSSID/MAC Address Displays the BSSID/MAC address of the WiFi board.
FCC ID Displays the FCC ID code, if applicable (USA).
IC ID Displays the IC ID code, if applicable (Canada).
Last Fluent Config Displays the date and time of the last attempt to send configuration data to the
Fluent server.
Last Fluent Data Displays the date and time of the last attempt to send a data to the Fluent server.
Live Connect Status Displays the status of the Live Connect tunnel.

5.4.7 Remote Communications (Modbus and BACnet)

This menu will appear only if one of the optional Remote Communications activation keys has been imported into
the controller, either by the factory at the time of ordering, or later using a field activation file.
To add the Remote Communications feature in the field, purchase the activation key file and save it to an USB
drive, as the only file stored on the root directory of the stick. Insert the stick into the USB port of the controller.
Go to the Configuration Menu, then File Utilities, then Import User Config File. Press the Confirm icon to start the
activation process.
The display will report whether the import was successful or not. The activation key file is only valid for the serial
number of the controller for which it was purchased.
For a complete description of the Modbus feature and register map, refer to the separate Modbus instruction manual.
For a complete description of the BACnet features that are supported refer to the separate BACnet Protocol Imple-
mentation Conformance Statement.
Comm Status Select Modbus or BACnet to enable one of the protocols, or Disabled.
Data Format Modbus Only. Select to receive Modbus data in Standard (Float) format or Float
Inverse format
Device ID BACnet Only. Enter the device ID for the controller. The default will be based on the
controller serial number.
Network BACnet only, if the dual connection WiFi card is installed. Select the connection that
will be used for BACnet communications; Ethernet or WiFi.
Data Port The standard port for Modbus data is port 502, and for BACnet is 47808. Enter the
port used if it is non-standard.
Verbose Logging If logging is Enabled, all Modbus or BACnet requests will be logged in the Event Log
(any errors, the function called, starting register, number of registers, value of the first
register, get object requests). This is useful when first setting up the HMI, but it will
quickly fill the Event Log if it is not Disabled during normal operation. The Verbose
Logging function will be automatically disabled after power to the controller is cycled.

5.4.8 Email Report Settings

NOTE: To set up the content of the Graph report, connect using a browser via Ethernet or WiFi and go to the
Graph webpage. See section 6.
Report #1 (through 4) Enter this menu to activate and set up a report to email, via the menus below:
Report Type Select the type of report to email: None, Alarm, Datalog, Graph, or Summary
(the Home webpage showing a Summary of current conditions).
Email Recipients Select up to 8 email addresses that reports may be sent to by touching the check box.
The addresses are entered in the Email Addresses menu described below.

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 Repetition Only appears if Report Type is Datalog, Graph or Summary.
Select how frequently to repeat sending the report: None, Hourly, Daily, Weekly or Monthly.
Reports Per Day Only appears if Report Type is Datalog, Graph or Summary.
Only appears if the repetition is set to Hourly. Select the number of reports per day:
2, 3, 4, 6, 8, 12 or 24. The report is sent on the Report Time and then evenly spaced
throughout the day.
Day Only appears if Report Type is Datalog, Graph or Summary.
Only appears if the repetition is set to Weekly. Choose the day of the week on which
the report will be sent.
Day of Month Only appears if Report Type is Datalog, Graph or Summary.
Only appears if the repetition is set to Monthly. Choose the day of the month on
which the report will be sent. If the current month has less days than the number
entered, the report will be sent on the last day of the month.
Report Time Only appears if Report Type is Datalog, Graph or Summary.
Only appears if the repetition is set to Daily, Weekly or Monthly. Enter the time of day
for the report to be sent.
Log Frequency Only appears if the Report Type is Datalog. Select the amount of time between data
points. The amount of time allowed varies with the repetition of the report.
Alarm Mode Only appears if Report Type is Alarm.
Choose to send emails on All Alarms or only Selected Alarms.
Attach Summary Only appears if Report Type is Alarm.
Select Enabled to receive alarm emails that include the Main Menu webpage as an
attachment or Disabled to receive a text-only alarm report email.
Select Alarms Only appears if Report Type is Alarm.
Only appears if the Alarm Mode is set to Selected Alarms. Select an Input or Output
channel, System Alarm or Network Alarm, then touch the check box for individual
alarms that will trigger an email to the list of recipients. Repeat for as many as desired.
Alarm Delay Only appears if Report Type is Alarm.
Enter how much time to wait after the alarm has been triggered before alarm
conditions are considered valid and the email is sent.
Email Addresses Enter up to 8 email addresses that reports may be sent to.
Email Server Select the type of email server to be used: Walchem Fluent®, SMTP, ASMTP, or TLS/
SSL.
Walchem Fluent and TLS/SSL will only be an available selection if the software ver-
sion is 3.31 or higher (TLS/SSL) or 3.37 (Walchem Fluent). Refer to Config – Con-
troller Details menu for the Network board software version.
SMTP Server Will not appear if Email Server is Walchem Fluent. Enter the SMTP server address,
either numeric or its name.
SMTP Port Will not appear if Email Server is Walchem Fluent. Walchem Fluent email requires
that port 49887 is open. Enter the port to be used by email server. The default is port
25 for SMTP, port 587 for ASMTP, and port 465 for TLS/SSL.
From Address Enter the controller’s email address. If the email server selected is Walchem Fluent,
only enter the portion of the address to be shown before the @ symbol. All emails will
be from @ walchem-fluent.net
ASMTP Username Enter the username required for authentication. Only appears if the email server type
is ASMTP or TLS/SSL.
ASMTP Password Enter the password required for authentication. Only appears if the email server type
is ASMTP or TLS/SSL.
Test Report Recipients Select the email addresses from the list that should receive the test report. If there are
none, enter them in the Email Addresses menu described above.

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Send Email Test Report Enter this menu and confirm to send the test Summary report to the selected test
report recipients.

5.4.9 Display Settings

Edit Home Screen The Home screen view can be customized to show the desired parameters, in any order,
Layout in cards that can be adjusted to the desired size. The largest size card is one half of one
screen. A maximum of 6 half-screens can be created. If there are more than two half-
screens, the controller will automatically scroll between the screens.

To customize a half-screen, touch the <Add Card> icon in the empty screen to create one
large card. The <- -> icon splits the card in half, while the - > < - icon merge two card
together. Touching the word in the card brings up a list of all available parameters that
may be displayed in that card.
The <trash can> icon deletes the entire half-screen. The arrow icons above and below the
<trash can> move the half-screen up or down in position relative to other half-screens. A
deleted half-screen can be brought back using the <Restore Card> icon.

Touch the Confirm icon to accept the changes or Close icon to cancel.
Splash Protection Enable Splash Protection if the controller will be hosed down or is installed unprotected
from rain. Water splashing on the screen can be make the screen respond like it’s being
swiped. When enabled, the user will be required to touch a series of numbered buttons in
the numerical order to unlock the screen. The screen will return to protected mode after
10 minutes of no activity, or if manually activated.
Activate Splash Manually active splash protection mode without waiting 10 minutes by touching this
Protection menu and confirming that choice.
Adjust Display Change the contrast and the brightness by touching the arrow keys. If the display becomes
unreadable, it is possible to reset the defaults by powering down and pressing the bottom
right corner of the touchscreen while powering back on.
Auto Dim Time If this is set to a non-zero time, the display backlight will dim if the touchscreen is not
touched for that amount of time. Touching the screen will turn the back to normal
brightness.
Key Beep Select enable to hear a beep when an icon is pressed, or disable for silence

5.4.10 File Utilities

The File Utilities menu is used to transfer log files, user settings files and software upgrade files, using the local and a
USB flash drive stick or using a network connection and browser.
If using a USB drive, it is necessary to choose a quality product, less than 16 MB capacity, with FAT file system.
Files may be renamed, but Configuration and Software Upgrade file extensions must NOT be changed. The USB drive
must contain only one copy of these type of files. If more than one is available, the first one alphabetically will be
imported by the controller.

File Transfer Status Displays the status of the last attempt to export a file
Data Log Export The data log contains data from every input and output. Enter this menu set up a
data log file to export:
Data Log Range Select how far back in time for data to be downloaded: Since Previous
download, past 6 hours, all the way up to the past 3 months.
Log Frequency Select the amount of time between data points. The amount of time allowed
varies with the Data Log Range. If the Data Log Range is selected as Since
Previous download, the choices for frequency of data points will be limited by
how far back in time the last download occurred.

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 Export Data Log File Save the Data Log file, as defined by the Data Log Range and Log Frequency
settings above, to a USB stick.
Periodic Log Export The periodic log contains data that is calculated hourly rather than analog in na-
ture, such as hourly Minimum Maximum and Average sensor calculations, relay
virtual output or digital input hourly on times, flow total volumes for the hour,
and analog output average output % for the hour.

Enter this menu set up a periodic data log file to export:

Periodic Log Range Select how far back in time for data to be downloaded: Since Previous
download, past 6 hours, all the way up to the past 3 months.
Log Frequency Select the amount of time between data points. The amount of time allowed
varies with the Periodic Log Range. If the Periodic Log Range is selected as
Since Previous download, the choices for frequency of data points will be
limited by how far back in time the last download occurred.
Export Periodic Log File Save the Periodic Log file, as defined by the Periodic Log Range and Log
Frequency settings above, to a USB stick.
Export Event Log Save the Event Log file to a USB stick. This records set point changes, user
calibrations, alarms, relay state changes, file exports, etc.
Export System Log Save the System Log file to a USB stick. This records hardware changes, software
upgrades, automatic calibrations, power loss, system-level issues, etc.
Export User Config File The User Configuration file contains all settings for the controller. Enter this menu
to save the controller’s settings to a USB stick (or download the file to a computer
if using the web interface) for using later to restore settings to this controller, or
to program additional controllers with the same settings as this one. It may take
several minutes to create the file and transfer it.
Import User Config File The User Configuration file contains all settings for the controller. Insert a USB
stick (if using the local interface) containing the desired Configuration file.
Enter this menu to import the file from the stick onto the controller. If using the
web interface, click Upload and select the file to upload.
Repair Network File System Touch this menu and confirm in order to clean up the file system on the Ethernet
card
Restore Default Config Enter this menu to restore all of the settings to the factory default values. Any
changes to settings that were previously made will be lost!
Software Upgrade Insert a USB stick that has the upgrade file stored in the root directory into the USB
connector under the watertight cap on the outside of the front panel (see figure 20).
Touch the Confirm icon, and then touch the Confirm icon to start the upgrade.
NOTE: To maintain the NEMA4X/IP66 rating, always remove the stick and replace the cap securely over the
USB connector when not in use.

5.4.11 Controller Details

Controller Displays the name for the group of default settings used as built
Product Name Displays the model of the controller as built
Serial Number Displays the serial number of the controller
Controller Board Displays the part number and revision of the front panel circuit board
Software Version Displays the software version on the controller board
Power Board Displays the part number and revision of the power/relay board
Relay Board #1-3 Displays the part number and revision of field-configurable relay modules, if present

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 Sensor Board #1 - #4 Displays the part number and revision of the I/O boards (One entry for each board
installed, up to 4)
Software Version Displays the software version on each I/O board (One entry for each board installed,
up to 4)
Last Data Log Displays the date and time of the last data log download
Digital Inputs Displays the part number and revision of the digital inputs
Auxiliary Power Board Displays the part number and revision of the auxiliary power board, if present
Software Version Displays the software version of the digital inputs
Network Displays the part number and revision of the network circuit
Software Version Displays the software version on the network circuit
WiFi Board Displays the part number and revision of the WiFi board
Software Version Displays the software version on the WiFi board
Auxiliary Power Board Displays the part number and revision of the auxiliary power board
Battery Power Displays the VDC output of the battery that is used to hold the date and time. The accept-
able range is 2.4-3.3 VDC.
Controller Temp 1 Displays the temperature of the first controller thermistor. The acceptable range is -10
to 75 C.
Controller Temp 2 Displays the temperature of the second controller thermistor. The ac-ceptable range is
-10 to 75 C.
Relay Board Temp Displays the temperature of the relay board thermistor. The acceptable range is -10 to 75 C.
Processor Temp Displays the temperature of the controller board processor. The acceptable range is -10
to 75 C.
DI Temp Displays the temperature of the digital input processor. The acceptable range is -10 to
75 C.
I/O Card 1-4 Temp Displays the temperature of each I/O module processor. The acceptable range is -10 to
75 C.
Network Temp Displays the temperature of the network circuit processor. The acceptable range is -10
to 85 C.
+12 Volt Supply The normal range is 11.28 to 12.72 VDC. The 12 V supply is the main DC power from
which all lower voltages are generated.
+5 Volt Supply The normal range is 4.7 to 5.3 VDC. The 5 V supply is used for powering all the I/O.
+3.3 Volt Supply The normal range is 2.8 to 3.5 VDC. The 3V supply is used to run the system.
LCD Bias Voltage The normal range is -25 to -20 VDC. This is the touchscreen voltage after contrast adjust-
ment.
LCD Supply The normal range is -25 to -20 VDC. This is the touchscreen voltage before contrast
adjustment.

5.5 HOA Menu

The HOA (Hand-Off-Automatic) Menu is used to quickly and easily test all outputs, and to stop or enable automatic
control.

Swipe up or down to view the output to change. Touch the Hand, Off or Auto button to change the HOA state of that
output. The current HOA state will be shaded dark. The change happens immediately unless the output is a relay
which has a Minimum Relay Cycle programmed above 0 seconds.

5.6 Graph Menu

The Graph Menu is used to display a graph containing two sensor or analog input values plus one digital input or relay
state. Touch the Graph icon and the controller will display “Generating Graph Please Stand By” for a few seconds then
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show the graph. The default is to show the value of sensor input S11 and the state of relay output R1 over the past 10
minutes.

Touching any point on either line on the graphs displays a vertical line plus the details for that data point: date and time,
value of the sensor, and an arrow showing if the state or the digital input/relay was high or low at that time. In this view,
<left arrow> and <right arrow> icons appear and touch these moves the vertical line by one data point in that direction.
Touch the Close icon to return to the normal graph view.

Touching the or the icons will redraw the graph forward or backwards in time, in increments of one time
range. It can only go back in time to the point where the data log file used to generate the graph starts. Changing the
time frame while in the graph view, after moving back in time, shows data from that past time. Exiting the graph
menu and returning to the graph menu moves back to the current time.

Swiping the graph left or right with two fingers is another way to move the graph forward or backwards in time. An
alternate way to change the time frame of the graph is to pinch or spread two fingers.

Settings
Touch any of the parameter tabs on the top of the graph to access graph settings.

Left Sensor Enter this menu to select the sensor, analog input, flowmeter type digital input (total flow
and/or flow rate if applicable), or analog output value to show on the the left side of the
graph
Low Axis Limit The graph auto-scales based on the sensor value if both Low and High Axis Limit are set to
0. To manually adjust the left Y axis scale, enter the low limit here.

High Axis Limit The graph auto-scales based on the sensor value if both Low and High Axis Limit are set to
0. To manually adjust the left Y axis scale, enter the high limit here.

DI/Relay Enter this menu to select digital input, or analog output value to show on the graph
Right Sensor Enter this menu to select the sensor, analog input, flowmeter type digital input (total flow
and/or flow rate if applicable), or analog output value to show on the right side of the graph
Low Axis Limit The graph auto-scales based on the sensor value if both Low and High Axis Limit are set to
0. To manually adjust the right Y axis scale, enter the low limit here.
High Axis Limit The graph auto-scales based on the sensor value if both Low and High Axis Limit are set to
0. To manually adjust the right Y axis scale, enter the high limit here.
Time Range Select the time range for the X axis of the graph.
The time range may also be accessed from the graph view by touching the time range icon in
the lower right corner.

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The resolution of the screen only allows for 240 data points per graph, so not all data points in each time range can be
shown. For finer resolution, download the data log CSV file from the Config – File Utilities menu and graph the data
in Excel or equivalent spreadsheet application.

Time Range Time between data points Datalog file used

30 minutes 10 seconds Daily
1 hour 20 seconds Daily
2 hour 30 seconds Daily
4 hours 1 minute Daily
8 hours 2 minutes Weekly
1 day 6 minutes Weekly
2 ½ day 15 minutes Monthly
5 days 30 minutes Monthly
1 week 45 minutes Monthly
2 weeks 90 minutes Monthly
4 week 3 hours Monthly

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6.0 OPERATION using Ethernet
All of the same settings that are available using the touchscreen are also available using a browser that is connected to
the controller’s Ethernet IP address. The controller may be connected to a Local Area Network (LAN), directly to the
Ethernet port of a computer, or to the Fluent account management system server.

6.1 Connecting to a LAN

Connect the controller’s network card to the LAN using a CAT5 cable with RJ45 connector.

6.1.1 Using DHCP

Using the touchscreen, from the Main menu, touch Config, then touch Ethernet Settings, then touch DHCP Setting.
Touch Enabled, then the Confirm icon.

After a power cycle of the controller, return to Config, then Ethernet Details to view the Controller IP Address that
has been assigned to the controller by the network.

6.1.2 Using a fixed IP Address

Using the touchscreen, from the Main menu, touch Config, then touch Ethernet Settings, then touch DHCP Setting.
Touch Disabled, then the Confirm icon. Cycle power to the controller. If DHCP is already Disabled then you can
skip this step.

Using the touchscreen, from the Main menu, touch Config, then touch Ethernet Settings, then touch Controller IP
Address. Enter the IP address provided by the administrator of the LAN then touch the Confirm icon. Repeat for
the Network Netmask and Network Gateway settings. Cycle power to the controller.

6.2 Connecting Directly to a Computer

Connect the controller’s network card to the computer using a CAT5 cable with RJ45 connector.
Follow the instructions above to give the controller a fixed IP address that is compatible with the network settings
of the computer. On the Security webpage there is also a setting for the Log in Timeout, which is the time limit for
the web connection to be idle before requiring the user to log in again. Having this setting short is the best protection
against unauthorized access.

Open a browser and type the numeric Controller IP address in the web page address field. The login screen should
quickly appear. Once logged in, the Home page will appear.

The default username is admin and the default password is the 10-digit serial number for the controller. The serial
number can be found printed on the label on the side of the controller, or by using the local touchscreen and going to
the Config menu, then Controller Details.

Once logged in with the default password, a prompt will appear to change to new credentials. The option to close the
prompt window and continue using the existing credentials exists, however the Admin and View-Only level user-
names and passwords can and should be changed by browsing to the Config menu, Security Settings webpage. Log
into the page using the current Admin level username and password, then change to new ones.

6.3 Navigating the web pages

From any computer that is directly connected to the controller, or is on the same network as the controller, open a brows-
er and type the numeric Controller IP address in the web page address field. The login screen should quickly appear.

The default username is admin and the default password is the 10-digit serial number for the controller. The serial
number can be found printed on the label on the side of the controller, or by using the local touchscreen and going to the
Config menu, then Controller Details.
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Once logged in with the default password, a prompt will appear to change to new credentials. The option to close the
prompt window and continue using the existing credentials exists, however the Admin and View-Only level usernames
and passwords can and should be changed by browsing to the Config menu, Security Settings webpage. Log into the
page using the current Admin level username and password, then change to new ones.

After logging in, the Home page will appear. This will display the date and time, any active alarms, and the current
readings or status of all of the Inputs and Outputs. On the left side of the page you will see links to the Main Menu selec-
tions: Alarms, Inputs, Outputs, Graphs, Config, Notepad and Software Upgrade if available. Click each menu to see the
submenus, and click on the submenu to access all of the details and settings associated with it. At the bottom, there is a
manual logout.

Below the Main Menu links there may be links to the instruction manual, Walchem website, and Walchem Fluent web-
site, that are useful if the controller is connected to the Internet.

At the bottom there is a Log Out link. The Ethernet connection only supports four simultaneous users. If users do not
log out, their session will stay active until it times out (the time is set in the Security menu), and other users may be
denied access until an existing session closes.

6.4 Graphs Webpage

The graphs page can display up to 8 parameters at a time. All possible parameters available based upon the controller
programming are listed in one column. Click the right arrow to add the highlighted parameter to the Selected column,
or the left arrow to move a selected parameter back out. Use the up and down arrows to move the highlighted selected
parameter up and down the list to set the order of the graphs on the page.

Click the Refresh Graph button to display the changes.

Select the Time Range for the X-Axis of the graph from the pulldown list, from 1 Hour to 4 Weeks.

If you are setting up a Graph Report email, click Save For Report to set the current page settings as the ones to be used
for the report. You will want to make sure that the selected Time Range is at least as long as the Report Frequency set in
the Email Report menu.
You can then change the settings on the graphs webpage without changing the report settings, by clicking the refresh
button without clicking the Save For Report button. The graph page will be greyed out until the refresh button has been
clicked.

In order to see what the report settings are, click the Load Report Settings button.
The graph email will contain an html attachment showing the graphs. The Export Graph button can be used to save the
graphs as an image that can be copied to a document. The same button is also available directly from the Graphs web-
page.

The graphs will display the parameter’s data in 360 data points, equally spread over the time range, in a blue line. For
analog inputs and outputs, the minimum value, maximum value, and average value over that same time range are also
displayed and graphed in a yellow line. The Y-axis will auto-scale to fit the data.

To change the Y-axis scale to a custom range, click anywhere on the axis, enter the desired minimum and maximum val-
ues, click Save, and then click the refresh graph button. To return to auto-ranging, click the Y-axis, click Reset to Default
Range,and refresh.

6.5 Software Upgrade

The software upgrade link will appear only to users with Admin login, and only if the controller has access to the
Internet with TCP port 9013 open inbound and outbound and the controller software is currently at version 3.31 or
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higher, and the software is not at the latest version available.

An Upgrade Description link to a webpage that supplies more details on the content of the upgrade is also available.

Click on Start Upgrade to begin the upgrade process.

The Upgrade Status will be displayed, with a button that may be used to Cancel the upgrade. Upon confirmation to cancel
the upgrade, a Resume button will appear.

The status messages include:

Preparing controller for upgrade
Then if successful: Complete
Or not successful: Failed
Downloading upgrade file (showing number of bytes downloaded of total number of bytes)
Then if successful: Complete
Or not successful: Failed
Validating upgrade file
Then if successful: Complete
Or not successful: Failed
Upgrade in progress (showing each individual step in the upgrade installation)

When the upgrade installation is complete, the login webpage will appear. Status or error messages will be recorded in
the System Log.

6.6 Notepad Menu

The Notepad Menu is used to store up to 10,240 bytes of notes (approximately one byte per character for English
language). This is typically used to communicate or store important process changes or events. A byte counter in the
lower right-hand corner displays how much space remains.
Click Save Notes and do not navigate away from the webpage until the popup screen indicates that changes have been
accepted. If the size is too large, you can click Clear Notes, which is noted in the Event Log, or delete some text and
then save.
6.7 Remote Sensor Calibration
For each sensor input, a Sensor Calibration is available on the input’s webpage. To initiate a sensor calibration, click
on the One-Point Process Calibration button.
A popup will open that displays the current value for that input and allow entry of the new value. Type the value of
that parameter as determined by another meter or laboratory analysis and click Begin Calibration. Click Cancel to
abort the calibration and retain the previous calibration.
For input types using automatic temperature compensation, the temperature reading will be displayed until the reading
is stable and then move to the next step without any action required.
If successful, the calibration gain or offset will be displayed. Click Save to accept the new value or Cancel to retain the
previous calibration.
If the new value results in a gain or offset that is out of the allowable range for the input, Calibration Failed will be
displayed. Click OK to end the calibration and retain the previous calibration settings. Refer to section 8.1 Calibration
Failure for help troubleshooting each type of sensor.

7.0 MAINTENANCE
The controller itself requires very little maintenance. Wipe with a damp cloth. Do not spray down the controller unless
the enclosure door is closed and latched.

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7.1 Electrode Cleaning
NOTE: The controller must be recalibrated after cleaning the electrode.

Frequency
The electrode should be cleaned periodically. The frequency required will vary by installation. In a new installa
tion, it is recommended that the electrode be cleaned after two weeks of service. To determine how often the elec
trode must be cleaned, follow the procedure below.

1. Read and record the conductivity.

2. Remove, clean and replace the conductivity electrode.
3. Read conductivity and compare with the reading in step 1 above.

If the variance in readings is greater than 5%, increase the frequency of electrode cleaning. If there is less than 5%
change in the reading, the electrode was not dirty and can be cleaned less often.

Cleaning Procedure
The electrode can normally be cleaned using a cloth or paper towel and a mild detergent. If coated with scale,
clean with a dilute (5%) solution of hydrochloric acid solution. Occasionally an electrode may become coated
with various substances that require a more vigorous cleaning procedure. Usually the coating will be visible, but
not always. To clean a coated electrode, use fine grit abrasive, such as emery paper. Lay the paper on a flat surface
and move the electrode in a back and forth motion. The electrode should be cleaned parallel to the carbon elec
trodes, not perpendicular.

Clean in this
direction

Figure 21 Cleaning the Electrode

7.2 Replacing the Fuse Protecting Powered Relays

CAUTION: Disconnect power to the controller before opening front panel!

Locate the fuse on the circuit board at the back of the controller enclosure under the plastic safety cover. Gently
remove the old fuse from its retaining clip and discard. Press the new fuse into the clip, secure the front panel of
the controller and return power to the unit.

Warning: Use of non-approved fuses can affect product safety approvals. Specifications are shown below. To
insure product safety certifications are maintained, it is recommended that a Walchem fuse be used.

Fuse 5 x 20 mm, 6A, 250V Walchem P/N 102834

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 7.3 Replacing the System Fuse (For model codes with relay option 8 or 9 only)

CAUTION: Disconnect power to the controller before opening front panel!

Locate the system fuse on the lower right-hand corner of the circuit board at the back of the controller enclosure
under the plastic safety cover. Gently remove the old fuse from its retaining clip and discard. Press the new fuse
into the clip, secure the front panel of the controller and return power to the unit.

Warning: Use of non-approved fuses can affect product safety approvals. Specifications are shown below. To en-
sure product safety certifications are maintained, it is recommended that a Walchem fuse be used.

For Relay Option 8: FUSE, 15A, 5x20mm, Fast Acting 250V Walchem P/N 104442
For Relay Option 9: FUSE, 20A, 5x20mm, Slow Blow 250V Walchem P/N 104443

8.0 TROUBLESHOOTING

CAUTION: Disconnect power to the controller before opening front panel!

Troubleshooting and repair of a malfunctioning controller should only be attempted by qualified personnel using
caution to ensure safety and limit unnecessary further damage. Contact the factory.

8.1 Calibration Failure

Calibrations will fail if the adjustments to the reading are outside of the normal range for a properly functioning sys-
tem. Refer to the instruction manual for the specific sensor being used for further information.

8.1.1 Contacting Conductivity Sensors

The calibration will fail if the adjustment to the gain is outside of 0.5 to 2.0.
Possible Cause Corrective Action
Dirty electrode Clean electrode
Improper wiring of sensor to controller Correct wiring
Wrong cell constant entered Program the controller cell constant setting at the value that
matches the electrode being used
Incorrect temperature reading or setting Ensure that the temperature is accurate
Incorrect cable length or wire gauge setting Set to the correct values
Faulty electrode Replace electrode

8.1.2 Electrodeless Conductivity Sensors

The calibration will fail if the adjustment to the gain is outside of 0.2 to 10, or the offset is outside of -10,000 to
10,000.
Possible Cause Corrective Action
Dirty sensor Clean sensor
Improper wiring of sensor to controller Correct wiring
Sensor placed too close to container walls Relocate sensor
Sensor placed in the direct path of electrical current flow Relocate sensor
Incorrect temperature reading or setting Ensure that the temperature is accurate
Incorrect cable length or wire gauge setting Set to the correct values
Faulty sensor Replace sensor

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8.1.3 pH Sensors
The calibration will fail if the adjustment to the gain is outside of 0.2 to 1.2, or if the calculated offset is outside of
-140 to 140.
Possible Cause Corrective Action
Dirty electrode Clean electrode
Improper wiring of sensor to controller Correct wiring
Incorrect temperature reading or setting Ensure that the temperature is accurate
Incorrect cable length or wire gauge setting Set to the correct values
Faulty electrode Replace electrode
Faulty preamplifier Replace preamplifier

8.1.4 ORP Sensors

The calibration will fail if the adjustment to the gain is outside of 0.5 to 1.5, or if the calculated offset is outside of
-300 to 300.
Possible Cause Corrective Action
Dirty electrode Clean electrode
Improper wiring of sensor to controller Correct wiring
Faulty electrode Replace electrode
Faulty preamplifier Replace preamplifier

8.1.5 Disinfection Sensors

The calibration will fail if the adjustment to the gain is outside of 0.2 to 10.0, or if the calculated offset is outside of
-40 to 40.
Possible Cause Corrective Action
Insufficient conditioning Wait for the appropriate amount of time before attempting a calibration.
Insufficient sample flow Increase flow rate to between 30 and 100 liter per hour.
Air bubbles on membrane Dislodge bubbles. Adjust flow rate higher if necessary.
Air bubbles in electrolyte Refill membrane cap with electrolyte.
Dirty membrane Clean membrane
Loose membrane cap Tighten membrane cap.
Faulty membrane Replace membrane cap.
High Pressure Reduce pressure to below 1 atmosphere and refill cap with electrolyte
No electrolyte fill solution in membrane cap Fill membrane cap with electrolyte. Replace membrane cap if it will not
hold solution.
Improper wiring of sensor to controller Correct wiring
Faulty sensor Replace sensor
Faulty analysis equipment or reagents Consult test equipment instructions
Sample contaminated with interfering molecule refer Remove source of contamination
to Sensitivity specification in sensor instructions)

8.1.6 Analog Inputs

The calibration will fail if the adjustment to the gain is outside of 0.5 to 2.0, or if the calculated offset is outside
of -2 to 2 mA.
Possible Cause Corrective Action
Improper wiring of sensor to controller Correct wiring
Faulty sensor Replace sensor
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 8.1.7 Temperature Sensors
The calibration will fail if the calculated offset is outside of -10 to 10.
Possible Cause Corrective Action
Improper wiring of sensor to controller Correct wiring
Temperature input is set to the incorrect element Reprogram to match the connected temperature element
Faulty sensor Replace sensor

8.1.8 Corrosion Inputs

The calibration will fail if the corrosion rate or imbalance value entered is outside the range of 0 to 5 times the
corrosion rate Range setting.
Possible Cause Corrective Action
Improper wiring of sensor to controller Correct wiring
Range settings is too low Increase the Range setting
Electrode tips have not conditioned long enough Allow time for electrodes to condition
Old electrodes Replace electrodes and consider setting an Electrode Alarm
reminder
Electrodes not tight Tighten electrodes
Electrodes are not completely submerged Install sensor in the side branch of a tee, not the top

8.2 Alarm Messages

HIGH or HIGH-HIGH ALARM
Occurs if the sensor reading rises above the high alarm set points. If your unit is programmed for an alarm relay output, the alarm
relay will activate. The controller will continue to check the sensor reading, and any outputs using the sensor will remain active.
Possible Cause Corrective Action
The process went further out of control than normal. May have to increase chemical flow rate.
The chemical supply has run out. Replenish the chemical supply.
The pump or valve or supply line is faulty. Repair or replace the control device.
Wrong chemical is being controlled. Replace with correct chemical.
The sensor is not responding to changes. Repair or replace sensor. Evaluate mixing or recirculation.
The pump is siphoning, valve leaking. Repair or replace the control device or re-route tubing.
Control output has been left in “HAND” mode. Switch back to “AUTO”.
It may be a normal part of the process. None required.
LOW or LOW-LOW ALARM
Occurs if the sensor reading drops below the low alarm set points. If your unit is programmed for an alarm relay output, the alarm
relay will activate. The controller will continue to check the sensor reading, and any outputs using the sensor will remain active.
Possible Cause Corrective Action
The process went further out of control than normal. May have to increase chemical flow rate.
The chemical supply has run out. Replenish the chemical supply.
The pump or valve or supply line is faulty. Repair or replace the control device.
Wrong chemical is being controlled. Replace with correct chemical.
The sensor is not responding to changes. Repair or replace sensor. Evaluate mixing or recirculation.
The pump is siphoning, valve leaking. Repair or replace the control device or re-route tubing.
Control output has been left in “HAND” mode. Switch back to “AUTO”.
It may be a normal part of the process. None required.
DEVIATION ALARM
Occurs if there is a redundant sensor virtual input, and the two sensors assigned are reading too far apart.
Possible Cause Corrective Action
The deviation alarm setting may be too low Adjust setting

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One or both of the sensors may need cleaning and calibration Clean and calibrate
One of the sensors may be faulty Replace sensor
DI STATE CUSTOM MESSAGE
A digital input that is a DI State type can be set such that either the open or closed state generates an alarm. The alarm message may
be customized. The most common use for this will be a Flow Switch.
Possible Cause Corrective Action
No flow Check piping for closed valves, blockage, etc.
Check recirculation pump.
Faulty flow switch/cable Check with ohmmeter.
Faulty controller Check by shorting digital input in controller.
TOTAL ALARM
Occurs if the flow meter or feed monitor totalizer alarm limit is exceeded.
Possible Cause Corrective Action
Normal operation Reset the total to clear alarm, or wait for the automatic total reset to occur.
AC coupled onto flow meter cable Route cable at least 6 inches (150 mm) away from any AC voltage
Noise coupled onto flow meter cable Shield cable
RANGE ALARM (for flow meter or feed monitor type digital inputs)
Occurs if the flow meter or feed monitor accumulated total is too large. The maximum total is 1 trillion times the increment of the device. For
example, if the increment is one gallon per pulse the maximum total is 1 trillion gallons.
Possible Cause Corrective Action
Normal operation Reset the total to clear alarm, or wait for the automatic total reset to occur.
FLOW VERIFY
Occurs if the feed monitor digital input does not register any contacts while the control output for that pump has been active for longer
than the Flow Alarm Delay time.
Possible Cause Corrective Action
Metering pump has lost prime Re-prime metering pump
Faulty metering pump Repair or replace metering pump
Incorrect feed monitoring device wiring Correct wiring. Make sure that digital input that the feed monitoring
device is connected to has been assigned to the correct relay
Faulty feed monitoring sensor Replace feed monitoring sensor
Blown fuse Verify the pump is getting power. Replace fuse
Faulty output relay Replace relay board
Faulty digital input Verify that feed monitoring device is making contact closures using
an ohmmeter. If OK, and connected properly, replace the controller
circuit board.
OUTPUT TIMEOUT
This error condition will stop control. It is caused by the output (either relay or analog) being activated for longer than the programmed
Time Limit.
Possible Cause Corrective Action
The process went further out of control than normal. Increase time limit or reset timer.
The chemical supply has run out. Replenish the chemical supply.
The pump or valve or supply line is faulty. Repair or replace the control device.
Wrong chemical is being controlled. Replace with correct chemical.
The sensor is not responding to changes. Replace sensor. Evaluate mixing or recirculation.
RANGE ALARM (for sensor inputs)
It indicates that the signal from the sensor is out of the normal range. This error condition will stop control of any output using the
sensor. This prevents controlling based upon a false sensor reading. If the temperature sensor goes into range alarm, then the controller
will go into manual temperature compensation using the Default Temperature setting.
Possible Cause Corrective Action
Sensor wires shorted Disconnect short
Faulty sensor Replace sensor
Faulty controller Replace or repair controller

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EVENT SKIPPED ALARM
An event skipped alarm is set when a second biocide or timer event occurs while one event is still running (either in prebleed, biocide-add
or post-biocide add lockout in the case of the biocide timer mode). An event skipped alarm is also set when the timer relay never turns
on during an event because of an interlock condition. The alarm is cleared when the relay is next activated for any reason (the next
timer event or HAND mode or “activate with” force on condition).
Possible Cause Corrective Action
Incorrect programming Reprogram to eliminate overlapping events
Long duration interlock condition Normal operation
Long duration prebleed Decrease prebleed time
Increase bleed flow rate
Reprogram to eliminate overlapping events
SENSOR FAULT
This error indicates that the signal from the sensor is no longer valid at all. This error condition will stop control of any output using
the sensor.
Possible Cause Correction Action
Sensor wires shorted Disconnect short
Faulty sensor Replace sensor
Faulty controller Replace or repair controller
INPUT FAILURE
This alarm indicates that the sensor input circuit is no longer working, or that one of the inputs used to calculate a virtual input is in a
Sensor Fault condition. This error condition will stop control of any output using the input.
Possible Cause Correction Action
Faulty controller Replace or repair controller
If using virtual inputs, sensor fault of one of the inputs See Sensor Fault troubleshooting above
BATTERY POWER LOW
This alarm indicates that the battery which holds the date and time in memory is below 2.4 VDC.
Possible Cause Correction Action
Faulty battery Replace battery
SYSTEM TEMP LOW
This alarm indicates that the temperature inside the controller is below -10 °C.
Possible Cause Correction Action
Low ambient temperatures Provide heat for the controller
SYSTEM TEMP HIGH
This alarm indicates that the temperature of the controller or sensor processor IC is above 75 °C, or that the temperature of the
Ethernet card processor IC is above 85 °C.
Possible Cause Correction Action
High ambient temperatures Provide cooling for the controller
High power draw Do not use the controller’s 24VDC to power more than 1.5W total
DISPLAY ERROR
This alarm occurs if the user interface gets lost
Possible Cause Correction Action
Pressing icons very quickly Exit out of the screen and continue programming
ETHERNET CARD FAILURE
This alarm occurs if the Ethernet circuit board fails
Possible Cause Correction Action
Ethernet card locked up Try a power cycle to reset it
Faulty Ethernet circuit Replace Controller Board
WEB SERVER FAILURE
This alarm occurs if the web server on the Ethernet circuit board fails
Possible Cause Correction Action
Web server locked up Try a power cycle to reset it
Faulty Ethernet card Replace Ethernet card

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Fluent DATA COMM ERROR
This alarm occurs if the controller attempts to send data to Fluent and Fluent fails to acknowledge receipt of the data
Possible Cause Correction Action
No connection to LAN Connect Ethernet cable to LAN
Wrong IP, subnet and/or gateway address Program valid settings for LAN in the controller or use DHCP if
supported by the LAN
LAN is blocking outside access Program LAN’s router to open access
Network card failure See above
SENSOR CAL REQUIRED
This alarm occurs if the sensor’s Cal Reminder Alarm has been set to more than 0 days and if the sensor has not been calibrated
within that number of days
Possible Cause Correction Action
Time to calibrate Calibrate the sensor
Reminder set in error Set the Cal Reminder Alarm to 0
CALCULATION ERROR
This alarm occurs if a virtual input calculation cannot be completed, for example if it has to divide by zero.
Possible Cause Correction Action
Zero value for the input used as the denominator Calibrate or evaluate that input
FLOW VERIFY
Occurs if the feed monitor digital input does not register any contacts while the control output for that pump has been active for longer than
the Flow Alarm Delay time.
Possible Cause Correction Action
Metering pump has lost prime Re-prime metering pump
Faulty metering pump Repair or replace pump
Faulty verification device wiring Correct wiring
Wrong digital input assigned to the output Correct programming error
Faulty verification device Repair or replace device
Faulty wiring of output to pump Correct wiring
Faulty output board Repair or replace board
Faulty digital input Replace board
CONTROLLER, POWER, DISPLAY, OR SENSOR BOARD ERROR
This alarm occurs if the board listed is not recognized
Possible Cause Correction Action
Poor ribbon cable connection Remove and reseat ribbon cable, cycle power
Poor option card connection Remove and reseat the board, cycle power
Faulty board Return the controller for repair
CONTROLLER, POWER, SENSOR, DISPLAY, NETWORK OR ANALOG OUTPUT BOARD VARIANT
This alarm occurs if the type of board that is detected is not a valid type
Possible Cause Correction Action
Poor ribbon cable connection Reseat ribbon cable
Faulty ribbon cable Replace ribbon cable
Faulty Board Replace the board listed in the error message
SENSOR SOFTWARE VERSION
This alarm occurs if a sensor input card with software v2.11 or lower is installed onto a controller board running software v2.13 or
higher
Possible Cause Correction Action
Software is not compatible between boards Perform a Software Upgrade
INVALID SENSOR TYPE
This alarm occurs if the programmed sensor type is not possible for the installed sensor board
Possible Cause Correction Action
The sensor board has been removed and replaced with a different type Reinstall the correct board or reprogram the input to a valid type for
the board installed
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INVALID CONTROL MODE
This alarm occurs if the programmed control mode is not possible for the installed power relay board
Possible Cause Correction Action
The power relay board has been removed and replaced with an Reinstall the correct board or reprogram the output to a valid type
incorrect model for the board installed
Fluent LIVE CONNECT ERROR
This alarm occurs if the controller is unable to establish an encrypted connection to the Fluent server. If there is also a Fluent Data
Comm Error, fix that first.
Possible Cause Correction Action
No UDP support on Port 9012 or TCP support on Port 44965 Open ports/protocols on router
DISABLED (SENSOR, DIGITAL OR VIRTUAL INPUT; RELAY OR ANALOG OUTPUT)
This alarm occurs if software for that input or output did not start correctly
Possible Cause Correction Action
The software is not functioning If the error message clears on its own, no action is required.
If the error message persists, cycle power.
If the error message still persists, return the controller for repair.
RELAY OR ANALOG OUTPUT CONTROL FAILURE
This alarm occurs if software for that output did not run correctly
Possible Cause Correction Action
The software is not functioning If the error message clears on its own, no action is required.
If the error message persists, cycle power.
If the error message still persists, return the controller for repair.
FRAM FILE SYSTEM ERROR
This alarm occurs if the FRAM is not detected at power up
Possible Cause Correction Action
The FRAM was or is not functioning If the error message clears on its own, no action is required.
If the error message persists, cycle power.
If the error message still persists, replace the controller board.
REPLACE ELECTRODES
Occurs if the user has set an Electrode Alarm and the number of days selected since the last time “Replace Corrosion Electrode” has
been confirmed has passed.
Possible Cause Corrective Action
The Electrode Alarm timer has expired Replace the electrodes and then confirm in the Replace Corrosion
Electrode menu
WiFi MODULE FAILURE
The WiFi module is not responding
Possible Cause Corrective Action
WiFi board not connected properly Power down, reseat WiFi board, power up
Faulty WiFi board Replace WiFi board
WiFi CONNECTION ERROR
The WiFi module is unable to connect to the specified Infrastructure access point
Possible Cause Corrective Action
Missing settings WiFi Status will be “Invalid Config”. Enter the missing settings.
Incorrect settings Check with the LAN admin for the correct settings
Invalid key WiFi Status will be “Invalid Key”. Check with the LAN admin for
the correct settings.
Poor signal WiFi status will be “Network Not Found” or “Unable to Connect”.
Improve signal.
Access point is not working WiFi status will be “Network Not Found” or “Unable to Connect”.
Have LAN admin check access point functionality.
Faulty WiFi board Replace WiFi board

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 UPDATE TIMEOUT
This alarm occurs if a Remote Modbus Input does not receive the requested data within the programmed Timeout Alarm Delay time
Possible Cause Corrective action
No Ethernet connection to the Modbus application Check wiring
Invalid Modbus communications settings Check settings
Timeout Alarm Delay time is too short Increase delay time
MESSAGE ERROR
This alarm occurs if the Remote Modbus Input receives an error message from the Modbus application instead of the requested data
Possible Cause Corrective action
Invalid Modbus communications settings Check settings. Enable Verbose Logging to see the exact error.
BOOLEAN ALARM
This alarm occurs if a Boolean Logic output is in the state in which it is programmed to alarm.
Possible Cause Corrective action
Improperly programmed Program correctly
Normal operation Respond to the cause of the relay being in the alarm state
DAILY MAX TIMEOUT
This alarm occurs if an output has been activated for longer than the programmed Daily Max Time Limit.
Possible Cause Corrective Action
Improperly programmed Program correctly
Normal operation Respond to the cause of the relay being activated for too long

8.3 Procedure for Evaluation of Conductivity Electrode

Try cleaning the electrode first (refer to Sect. 7.1). To check the electrode, check the electrode connections to the
terminal strip (refer to Figure 7). Make sure that the correct colors go to the correct terminals, and that the connections
are tight. Restore power and see if the conductivity is back to normal. If not, replace the electrode.

8.4 Procedure for Evaluation of the pH/ORP Electrode

The most common cause of a calibration failure is an electrode problem. First try cleaning the electrode, then retry
the calibration. If this fails again, replace the electrode and retry the calibration.
The next most common problem is wet or poor connections. Check the connection of the electrode to the cable for
moisture. Check the connections between the cable and the terminal strip. Make sure that they are tight, that the
terminal is not clamped to the plastic jacket, and that the wires are routed to the correct terminal. If there is a junction
box installed between the electrode and the controller, check the wiring there as well.
You should be able to measure the +5VDC ±5% and -5VDC ±5% vs IN- at the terminal strip. If not, the controller is
faulty. You should be able to measure the IN+ vs IN- (DC scale) and get the appropriate values for the buffer solu-
tions used. If not, the preamplifier or its wiring is faulty.
The last possibility is to try replacing the preamplifier.

8.5 Diagnostic Lights

Some of the circuit boards inside the controller have diagnostic lights.
FRONT PANEL RED LED
Indicates an active alarm. Normal operation is that it is off unless the software reports an alarm condition, in which case it blinks
every second.

Possible Cause Correction Action

Active alarm condition Troubleshoot that particular alarm
FRONT PANEL GREEN LED
Indicates status of the software application. Normal operation is that 5 seconds after power-up, it is on. If it is not doing this:
Possible Cause Correction Action

127
Controller software is not running Try a power cycle to reset it
Faulty controller board Replace controller board
CONTROLLER BOARD D1 LED
Indicates status of the software application. Normal operation is that 5 seconds after power-up, it does one long blink on, two short
blinks, on long blink off. If it is not doing this:
Possible Cause Correction Action
Controller software is not running Try a power cycle to reset it
Faulty controller board Replace controller board
CONTROLLER BOARD D10 LED
Indicates the status of the Ethernet software. Normal operation is that 5 seconds after power-up, it does 5 seconds on, 5 seconds off. If
it is not doing this:
Possible Cause Correction Action
Ethernet software is not running Try a power cycle to reset it
Faulty power supply Replace power supply
CONTROLLER BOARD D3 LED
Indicates the status of the digital input software. Blinks slowly for a few seconds during power-up. Normal operation is OFF. If not
behaving this way:
Possible Cause Correction Action
Digital input software locked up Try a power cycle to reset it
Faulty controller board Replace controller board
CONTROLLER BOARD D8 LED
Indicates the status of the 12VDC power supply. Normal operation is ON. If not on:
Possible Cause Correction Action
Faulty ribbon cable Replace ribbon cable
Faulty power supply Replace power supply
CONTROLLER BOARD D7 LED
Indicates the status of the 5VDC power supply. Normal operation is ON. If not on:
Possible Cause Correction Action
Faulty ribbon cable Replace ribbon cable
Faulty power supply Replace power supply
CONTROLLER BOARD D5 LED
Indicates the status of the 3.3VDC power supply. Normal operation is ON. If not on:
Possible Cause Correction Action
Faulty ribbon cable Replace ribbon cable
Faulty power supply Replace power supply
I/O BOARD LEDs
Indicates the status of the sensor board. Blinks slowly for several seconds during power-up. Normal operation is OFF. If not behaving
this way:
Possible Cause Corrective Action
Sensor card locked up Try a power cycle to reset it
Sensor card not seated correctly Unplug the card and plug it back in
Ribbon cable not seated correctly Unplug the ribbon cable at each end and plug it back in
Faulty ribbon cable Replace ribbon cable
Faulty sensor card Replace sensor card
RELAY BOARD D3 LED
Indicates the status of the 12VDC power supply. Normal operation is ON. If not on:
Possible Cause Correction Action
Faulty power supply cable Replace ribbon cable
Replace power supply

128
RELAY BOARD D2 LED
Indicates the status of the 3.3VDC power supply. Normal operation is ON. If not on:
Possible Cause Correction Action
Faulty power supply cable Reseat or replace cables
Faulty power supply Replace power supply

129
9.0 Spare Parts Identification

I/O Boards:
191910 Dual Sensor Input
191912 Dual Analog Input
191913 Four Analog Input
191914 Six Analog Input
191915 Dual Analog Output
191916 Four Analog Output
191918 Four Analog Output/Two Analog Input
191920 Dual Corrosion Sensor Input
192118
Safety Cover

191930
Main Controller Boards:
I/O Board Holder
192075-WA-CT-N, Cooling Tower
192075-WA-BL-N, Boiler
192075-WA-IN-N, Industrial
Change -N to -M for Modbus/BACnet

192062
AUX Power Board, 12V
192063
191944 WiFi + Ethernet AUX Power Board, 24V
192612 WiFi Only 192019
Ribbon Cable
192119
Power Supply

192021
Cable (2x)

104270
Power Switch

102903
Locknut

104271
Switch Boot

104259
104267 Strain Relief,
Latch AC Mains with Nut

191677
190630 192120-WA 191742 Strain Relief
USB Connector Display/Door/Label, Strain Relief 3-Hole
Walchem 6-Hole
103911 USB Gasket
191948
103910 USB Nut 104333
Relay Boards: 103946 Strain Relief
103832 USB Cap USA Pigtail
192066 7 Powered,1 Dry Strain relief, 4-Hole
192067 6 Powered,12 Opto Ethernet with Nut 104330 USA Power Cord 15A
192068 8 Powered
104264 USA Power Cord 20A
192070 4 Powered, 4 Dry
104147 DIN
192071 8 Dry
104148 Brazil
192072 4 Powered, 4 Opto
192073 4 Dry, 4 Opto
192074 6 dry, 2 Opto

Controller Parts – Fixed Relays

130
RelayBoards:
192064 Field-Configurable, 15A
192065 Field-Configurable, 20A

Relay Modules
192077 4 Powered
192078 4 Dry
192079 4 Opto
192080 2 Powered, 2 Opto
192081 2 Powered, 2 Opto
192082 2 Dry, 2 Opto
192083 3 Dry Form C

Controller Parts – Field-Configurable Relays

131
Spare Parts
Identification
Drawings

Scan this QR CODE with your smartphone camera

for a direct link to the individual drawings Walchem.com
https://www.walchem.com/spareparts-intuition-9

132
 102586
193094-03* Nut
Manifold
FS, CCond, LD2
3 ft. Cable
190998-03*
Switch
Assembly
191020-03*
Switch/Float
Assembly
3 ft. Cable 190996

PAHMNN: + WEL-MVR + LD2

PBHMNN: + WEL-MVR + LD2

102692
Panel Float
190997-03*
Flow Switch 102919
Assembly O-Ring
3 ft. Cable
102594
O-Ring

102881
Flow Switch
Body

103425
Nipple
102884

133
Tee 102594 103963
O-Ring Little Dipper 2
104307
Screws 102586
Nut

PAIMNN: + WEL-MVF + LD2

PBIMNN: + WEL-MVF + LD2

103425
Nipple

191646-03* Sensor (Graphite)

102961 102879-01 or 191647-03* (Stainless Steel)
Hanger Elbow
103886
Screws

102586
Nut
102594
O-Ring

103515
Valve

PBFMNN: 316SS contacting conductivity + Flow Switch manifold on panel + WEL-PHF no ATC + LD2
PAFMNN: Graphite contacting conductivity + Flow Switch manifold on panel + WEL-PHF no ATC + LD2
WCT900 Sensor Options PAFMNN, PBFMNN, PAHMNN, PBHMNN, PAIMNN, PBIMNN
 193001-03*
Manifold
102692 FS,CCond, PH/ORP, LD2
Panel 3 ft. Cable 102586
Nut

190997-03*
Flow Switch
Assembly 190998-03*

PAEHMN: + WEL-MVR + LD2

PBEHMN: + WEL-MVR + LD2

3 ft. Cable Switch
Assembly
191020-03*
Switch/Float 190996
Assembly Float
3 ft. Cable
102919
O- Ring
104307
102961 Screws
Hanger 102594
O-Ring
102586 102881
Nut Flow Switch Body
103886
Screws

103425
Nipple

134
Sold Separately:
191653-03* Preamp with ATC 102884

+ Makeup Conductivity + WEL-PHF no ATC + LD2

+ Makeup Conductivity + WEL-PHF no ATC + LD2
or 191652-03* Preamp ATC Tee 102594

PAEIMN: + WEL-MVF + LD2

PBEIMN: + WEL-MVF + LD2

102377
Hanger Sold Separately O-Ring
WEL-PHF-NN Flat pH Cartridge
or WEL-MVF-NN Flat ORP Cartridge
or WEL-MVR-NN Rod ORP Cartridge
103967
Little Dipper 2
102594
O-Ring

PBEFMN: 316SS contacting conductivity + Flow Switch manifold on panel

102423 102586
Elbow 103425

PAEFMN: Graphite contacting conductivity + Flow Switch manifold on panel

Nut
Makeup Water Conductivity Nipple
102586 102879-01
191646-20 Sensor (Graphite) Nut
103425
20 ft cable Nipple Elbow

102423
Elbow 191646-03* Sensor (Graphite)
102594 or 191647-03* (Stainless Steel)
102585 O ring
Adapter
103425
Nipple 103425
Nipple
102884
Tee
102594
103515 O-Ring 102586
Valve Nut

WCT900 Sensor Options PAEFMN, PBEFMN, PAEHMN, PBEHMN, PAEIMN, PBEIMN

 102692
Panel

191001-03*
Manifold CCond, PH/ORP
3ft. Cable 102586
Nut

PAHNNN: + WEL-MVR
190997-03*

PBHNNN: + WEL-MVR
Flow Switch
Assembly 190998-03*
3ft. Cable Switch
Assembly

104307 191020-03* 190996

Screws Switch/Float Float
Assembly
3ft. Cable 102919
O-Ring

102586
Nut 102594
O-Ring
Sold Separately:
103886 191653-03* Preamp with ATC
Screws or 191652-03* Preamp no ATC 102881

PAINNN: + WEL-MVF
Flowswitch

PBINNN: + WEL-MVF
Body

135
102377 102961 Sold Separately
Hanger Hanger WEL-PHF-NN Flat pH Cartridge
or WEL-MVF-NN Flat ORP Cartridge
or WEL-MVR-NN Rod ORP Cartridge
102926
102423 102594 Nipple
Elbow O-Ring

102879-01
103425 Elbow
Nipple
103425
Nipple
102594
102423 O-Ring
103425
Elbow Nipple 102884
Tee 103515
Valve

191646-03* Sensor (Graphite)

or 191647-03* (Stainless Steel)
102586

PBFNNN: 316SS contacting conductivity + Flow Switch manifold on panel + WEL-PHF no ATC
Nut

PAFNNN: Graphite contacting conductivity + Flow Switch manifold on panel + WEL-PHF no ATC
WCT900 Sensor Options PAFNNN, PBFNNN, PAHNNN, PBHNNN, PAINNN, PBINNN
 102692
Panel

191001-03*
Manifold CCond, PH/ORP
3ft. Cable 102586

PAEHNN: + WEL-MVR

PBEHNN: + WEL-MVR
Nut
190997-03*
Flow Switch
Assembly 190998-03*
3ft. Cable Switch
Assembly

104307 191020-03* 190996

Screws Switch/Float Float
Assembly
3ft. Cable 102919
O-Ring

102586
Nut 102594
O-Ring
Sold Separately:
103886 191653-03* Preamp with ATC

PAEINN: + WEL-MVF

PBEINN: + WEL-MVF
Screws or 191652-03* Preamp no ATC 102881
Flowswitch

+ Makeup Conductivity+ WEL-PHF no ATC

+ Makeup Conductivity + WEL-PHF no ATC

Body

136
102377 102961 Sold Separately
Hanger Hanger WEL-PHF-NN Flat pH Cartridge
or WEL-MVF-NN Flat ORP Cartridge
or WEL-MVR-NN Rod ORP Cartridge
102926
102423 102594 Nipple
Elbow O-Ring

102879-01
Makeup Water Conductivity 103425 Elbow
Nipple

PBEFNN: 316SS contacting conductivity + Flow Switch manifold on panel

102586
191646-20 Sensor (Graphite) Nut

PAEFNN: Graphite contacting conductivity + Flow Switch manifold on panel

20 ft cable 103425
Nipple
102594
102423 O-Ring
103425
102594 Elbow Nipple 102884
102585 O ring Tee 103515
Adapter
Valve

191646-03* Sensor (Graphite)

or 191647-03* (Stainless Steel)
102586
Nut

WCT900 Sensor Options PAEFNN, PBEFNN, PAEHNN, PBEHNN, PAEINN, PBEINN

 102586
193094-03* Nut
Manifold
FS, CCond, LD2
3 ft. Cable
190998-03*
Switch
Assembly
191020-03*
Switch/Float
Assembly
102692 3 ft. Cable 190996
Panel Float
190997-03*
Flow Switch 102919
Assembly O-Ring
3 ft. Cable
102594
O-Ring

102881
Flow Switch
Body

103425

137
Nipple

WCT900 Sensor Options PAMNNN, PBMNNN

102884
Tee 102594 103963
O-Ring Little Dipper 2
104307
Screws 102586
Nut

103425
Nipple

191646-03* Sensor (Graphite)

102961 102879-01 or 191647-03* (Stainless Steel)
Hanger Elbow

PBMNNN: 316SS contacting conductivity + Flow Switch manifold on panel + LD2

103886
Screws

PAMNNN: Graphite contacting conductivity + Flow Switch manifold on panel + LD2

102586
Nut
102594
O-Ring

103515
Valve
 102586
193094-03* Nut
Manifold
FS, CCond, LD2
3 ft. Cable
190998-03*
Switch
Assembly
191020-03*
Switch/Float
Assembly
102692 3 ft. Cable 190996
Panel Float
190997-03*
Flow Switch 102919
Assembly O-Ring
3 ft. Cable
102594
O-Ring

102881
Flow Switch
Body

103425
Nipple

138
102884

WCT900 Sensor Options PAEMNN, PBEMNN

Tee 102594 103963
O-Ring Little Dipper 2
104307
Screws 102586
Nut

103425
Nipple

191646-03* Sensor (Graphite)

102961 102879-01 or 191647-03* (Stainless Steel)
Hanger Elbow
103886
Screws
Makeup Water Conductivity
102586 102586
191646-20 Sensor (Graphite) Nut
20 ft cable Nut
102594
O-Ring

102594 103515
102585 O ring Valve
Adapter

PBMNNN: 316SS contacting conductivity + Flow Switch manifold on panel + makeup sensor + LD2
PAEMNN: Graphite contacting conductivity + Flow Switch manifold on panel+ makeup sensor + LD2
 190994-03
Manifold
Fs,CCond
3 ft Cable
102586
Nut
191020-03*
Switch/Float
Assembly
3 ft. Cable
102692 190997-03* 190998-03*
Panel Flow Switch Switch
Assembly Assembly
3 ft. Cable

190996
Float
102919
O-Ring
102594
O-Ring

102881

139
104307
Screws Flow Switch

WCT900 Sensor Options PANNNN, PBNNNN

Body
103886
Screws

102926
Nipple

102879-01
Elbow

PBNNNN: 316SS contacting conductivity + Flow Switch manifold on panel

102961

PANNNN: Graphite contacting conductivity + Flow Switch manifold on panel

Hanger 102594
O-Ring 191646-03* Sensor (Graphite)
or 191647-03* (Stainless Steel)

102586
Nut

103515
Valve
 190994-03
Manifold
Fs,CCond
3 ft Cable
102586
Nut
191020-03*
Switch/Float
Assembly
3 ft. Cable
102692 190997-03* 190998-03*
Panel Flow Switch Switch
Assembly Assembly
3 ft. Cable

190996
Float
102919
O-Ring
102594
O-Ring

140
104307 102881
Flow Switch

WCT900 Sensor Options PAENNN, PBENNN

Screws
Body
103886
Screws

102926
Nipple

102879-01
Elbow
102961
Hanger 102594
O-Ring 191646-03* Sensor (Graphite)
or 191647-03* (Stainless Steel)

102586
Makeup Water Conductivity Nut
102586
191646-20 Sensor (Graphite) Nut
20 ft cable

103515
102594 Valve
102585 O ring
Adapter

PBENNN: 316SS contacting conductivity + Flow Switch manifold on panel + makeup sensor
PAENNN: Graphite contacting conductivity + Flow Switch manifold on panel + makeup sensor
 102586
Nut

190998-03*
Switch
Assembly
191020-03*
Switch/Float
102692 Assembly
Panel 3 ft. Cable
190996
Float
190997-03*
Flow Switch 102919
Assembly O-Ring
3 ft. Cable 102594
O-Ring

102881
Flow Switch
Body

103425
Nipple

141
ST-500

WCT900 Sensor Options PAPNNN, PBPNNN

Pyxis Sensor
104307 & Tee
Screws Assembly

102961
Hanger 103886
Screws

102594
103425 O-Ring
Nipple
191646-03* Sensor (Graphite)
or 191647-03* (Stainless Steel)

PBPNNN: 316SS contacting conductivity + Flow Switch manifold on panel + Pyxis

102586
102879-01 Nut

PAPNNN: Graphite contacting conductivity + Flow Switch manifold on panel + Pyxis

Elbow

103515
Valve
 102586
Nut

190998-03*
Switch
Assembly
191020-03*
Switch/Float
102692 Assembly
Panel 3 ft. Cable
190996
Float
190997-03*
Flow Switch 102919
Assembly O-Ring
3 ft. Cable 102594
O-Ring

102881
Flow Switch
Body

103425
Nipple

WCT900 Sensor Options PAEPNN, PBEPNN

142
ST-500
Pyxis Sensor
104307 & Tee
Screws Assembly

102961
Hanger 103886
Screws

102594
103425 O-Ring
Nipple
Makeup Water Conductivity 191646-03* Sensor (Graphite)
102586 or 191647-03* (Stainless Steel)
191646-20 Sensor (Graphite) Nut
20 ft cable
102586
102879-01 Nut
Elbow

102594
102585 O ring
Adapter

103515

PBEPNN: 316SS contacting conductivity + Flow Switch manifold on panel + Pyxis + makeup sensor
Valve

PAEPNN: Graphite contacting conductivity + Flow Switch manifold on panel + Pyxis + makeup sensor
 191957
Manifold
CCond, Dual PH, Dueal Corr, LD2
102586
Nut

190997-03*
Flow Switch
Assembly 190998-03*

PAFIMR: + WEL-MVF

PBFIMR: + WEL-MVF
3 ft. Cable Switch
Assembly
191020-03*
Switch/Float
102961 Assembly
Sold Separately: 3 ft. Cable 190996
Hanger 191965-06 Corrosion Sensor Float
102919
104307 O- Ring
Screws
102594
103886 O-Ring
Screws 102061
Tee 104203
Fitting
103425 102926 102881
Nipple Nipple Flow Switch Body

102423 102586
Elbow Nut
102938 103425
Panel 102586 Nipple 102586
Nut 102884

143
Nut
Tee
Sold Separately:
191653-03* Preamp with ATC 102594
or 191652-03* Preamp ATC O-Ring

Sold Separately
WEL-PHF-NN Flat pH Cartridge
or WEL-MVF-NN Flat ORP Cartridge

no ATC + Little Dipper 2 +Dual Corrosion + WEL-MVR

or WEL-MVR-NN Rod ORP Cartridge

no ATC + Little Dipper 2 + Dual Corrosion + WEL-MVR

102423 102917 103963
Elbow 102594 Nipple Little Dipper 2
O-Ring
102594
O-Ring
103425
Sold Separately: 103425 Nipple
191965-06 Corrosion Sensor Nipple

*Use “-20” for 20 foot cables

WCT900 Sensor Options PAFHMR, PBFHMR, PAFIMR, PBFIMR

103425
Nipple

PAFHMR: Graphite contacting conductivity + Flow Switch manifold on panel + WEL-PHF

104203 102061 102879-01 102586

PBFHMR: 316SS contacting conductivity + Flow Switch manifold on panel+ WEL-PHF

Fitting Tee 103425 Elbow Nut
Nipple 102884
Tee 103515
Valve
191646-03* Sensor (Graphite)
or 191647-03* (Stainless Steel)
 102692
Panel
191010
Manifold

PINNNN: + WEL-MVF
PH 102586

PHNNNN: + WEL-MVR
3 ft. Cable Nut
190997-03*
Flow
Switch 190998-03*
Assembly 3 ft. Cable Switch
Assembly

104307 191020-03* 190996

Screws Switch/Float Float
Assembly 3 ft. Cable
102961 102919
Hanger O- Ring
102586
Nut 102594
O-Ring
103886 Sold Separately:
Screws 191653-03* Preamp with ATC
or 191652-03* Preamp ATC
102881
Flow Switch Body

Sold Separately

144
WEL-PHF-NN Flat pH Cartridge
or WEL-MVF-NN Flat ORP Cartridge
or WEL-MVR-NN Rod ORP Cartridge
102926
Nipple
102377 102594
Hanger O-Ring
102423
Elbow

W900-CT-PFNNNN: Flow Switch manifold on panel + WEL-PHF no ATC

W900-IN-PBNNNN: Flow Switch manifold on panel + WEL-PHF with ATC

103425
Nipple 102061
Tee

*Use “-20” for 20 foot cables 103425

102423 Nipple 102381
Elbow Adapter
103425
Nipple
102884
Tee

103515
Valve

WCT900 Sensor Options PFNNNN, PHNNNN, PINNNN and WIN900 Sensor Option PBNNNN
 101538
Screw
191090-04*
Manifold
Ccond / pH / ORP 191949
Preamplifier

191634-3
Cable
102029
pH Sensor or
102963
ORP Sensor

WCT900 Sensor Option HDGJNN

104031
Adapter 191669 101538
Gland Screw
104307
Screws
103058 191949
102961 Tee Preamplifier
Hanger

102437 191634-3
Nipple Cable

145
103886
Screws
103059
Elbow
104031
Adapter

102962 102437 103058

Flow Switch Nipple Tee

103193
Cross

103061
Ccond Sensor

HDGJNN: High Pressure conductivity + pH + ORP + Flow Switch manifold on panel

104031
Adapter

*Use -20 for 20 foot cables 103056

Valve
 101538
191078-04* Screw
Manifold 102029
Ccond / pH / ORP pH Sensor or
102963
ORP Sensor
191949
Preamplifier

191634-3
Cable

191669
Gland

103058
Tee
104307
Screws
103061
Ccond Sensor

WCT900 Sensor Options HDGNNN, HDJNNN

103886 102962
Screws Flow Switch

146
102437
102961 Nipple
Hanger

102437
Nipple
103058
Tee

103059 104031

HDGNNN: High Pressure Conductivity + pH + Flow Switch manifold on panel

Elbow Adapter

HDJNNN: High Pressure Conductivity + ORP + Flow Switch manifold on panel

103056
Valve
*Use -20 for 20 foot cables
 191077 103061
Manifold
CCond HI-PRESS, 300PSI
HP CCond W/FS

103058
Tee

102962
Switch/Float

WCT900 Sensor Option HDNNNN

104307
102961 Screws 102437
Hanger Nipple

103886
Screws 103058
Tee

147
102437
Nipple
104031
Nipple

102692
Panel
103056

HDNNNN: High Pressure conductivity + Flow Switch manifold on panel

Valve

SOLIDWORKS Educational Product.

For Instructional Use Only.
 101538
Screw

191669
Gland 191949
Preamplifier

191371-04*
Manifold 102029
pH / ORP pH Sensor or 191634-3
102963 Cable
ORP Sensor

104307
102961 Screws
Hanger 104031
Adapter

103886

WCT900 Sensor Options HGNNNN, HJNNNN

Screws
102962

148
Flow Switch

HGNNNN: High Pressure pH + Flow Switch manifold on panel

102437

HJNNNN: High Pressure ORP + Flow Switch manifold on panel

Nipple
103058
Tee

104031
Adapter

103056
Valve

*Use -20 for 20 foot cables

 191002-DIP
102586
Manifold Nut
SKELETON,CCND/DUAL PH/ DIP
190998-03*

PAFIMN: + Flat ORP

190997-03* Switch

PBFHMN: + Rod ORP

Flow Switch Assembly
Assembly 3 ft. Cable
102594
O-Ring
191020-03*
Switch/Float
Assembly 3 ft. Cable 190996
Float

102919
O- Ring
102586
Nut
102881
Flow Switch
Body

191652-03*
103425
Preamp
Nipple
104307
102961 Screws 102884
Hanger Tee

149
103425
WEL-PHF-NN Nipple
pH Sensor
103963
SENSOR, LITTLE DIPPER
103886 WEL-MVR-NN or WEL-MVF-NN
Screws ORP Sensor

102594
O-Ring 102594
O-Ring
102586
Nut

WCT900 Sensor Options PAFHMN, PBFHMN, PAFIMN, PBFIMN

102423 103425
Elbow Nipple

103425 103425
Nipple Nipple 191646-03* or 191647-03*
103515 SENSOR, ASM, CCOND, PASSIVE
103425 102884 Valve
*Use -20 for 20 foot cables Nipple Tee
102879-01
Tee

PBFIMN: 316SS contacting conductivity + pH + LD2 + Flow Switch manifold on panel + Flat ORP
PAFHMN: Graphite contacting conductivity + pH + LD2 + Flow Switch manifold on panel + Rod ORP
 191963
Manifold
Skeleton,Ccond/Dual pH/Corr 102586

PAFIMO: + Flat ORP

PBFIMO: + Flat ORP

Nut

+ Rod ORP
+ Rod ORP
190997-03* 190998-03*
Flow Switch Switch
Assembly 3 ft. Cable Assembly

191020-03* 102594
Switch/Float O-Ring
Assembly 3 ft. Cable 190996
Float
102586
Nut 102919
O- Ring

102881
Flow Switch
Body

104307 191652-03* 103425

Screws Preamp Nipple

102961 102884
Hanger Tee
103425

150
WEL-PHF-NN Nipple
103886 pH Sensor
Screws 103963
WEL-MVR-NN or WEL-MVF-NN Sensor, Little Dipper
ORP Sensor
102594
O-Ring
102594
O-Ring
102423
Elbow
102586
103425
Nut
Nipple
103515

WCT900 Sensor Options PAFHMO, PBFHMO, PAFIMO, PBFIMO

191935-06
Sensor, Corrosion Valve 102879-01
103425 Tee
103425
Nipple
Nipple

103425 102884 191646-03* or 191647-03*

104203
Nipple Tee Sensor, ASM, Ccond, passive
Fitting, Gland, Corrosion

102879-01
*Use -20 for 20 foot cables Tee

PBFHMO: 316SS contacting conductivity + pH + LD2 + Corrosion + Flow Switch manifold on panel
PAFHMO: Graphite contacting conductivity + pH + LD2 + Corrosion + Flow Switch manifold on panel
 191002-03*
Manifold

PAFINN: + Flat ORP

PBFINN: + Flat ORP

Skeleton, Ccond / Dual pH

190997-03* 102586
Flow Switch Nut
Assembly 3 ft. Cable
190998-03*
191020-03* Switch
Switch/Float Assembly
Assembly 3 ft. Cable
102594
O-Ring
190996
Float
102586
Nut 102919
O- Ring

102881
191652-03* Flow Switch
Preamp Body

104307 102926
102961 Nipple

151
Screws
Hanger
102879-01
WEL-PHF-NN Tee
pH Sensor

103886 WEL-MVR-NN or WEL-MVF-NN 102594

Screws ORP Sensor O-Ring
102594
102586
O-Ring
Nut

103425
Nipple

WCT900 Sensor Options PAFHNN, PBFHNN, PAFINN, PBFINN

102423
Elbow

103425 103425
Nipple Nipple 191646-03* or 191647-03*
102884 103515 Sensor, ASM, Ccond, Passive
*Use -20 for 20 foot cables Tee Valve

PBFHNN: 316SS contacting conductivity + pH + Flow Switch manifold on panel + Rod ORP
PAFHNN: Graphite contacting conductivity + pH + Flow Switch manifold on panel + Rod ORP
 191962-03*
Manifold 102586
Ccond / Dual pH / Corr Nut
190998-03*

PAFION: + Flat ORP

PBFION: + Flat ORP

190997-03* Switch
Flow Switch Assembly
Assembly 3 ft. Cable
102594
191020-03* O-Ring
Switch/Float 190996
Assembly 3 ft. Cable Float
102919
O- Ring

102586 102881
Nut Flow Switch
Body

104307
Screws
102926
102961 191652-03* Nipple
Hanger Preamp

103886
Screws

152
WEL-PHF-NN
102879-01
pH Sensor
Tee
WEL-MVR-NN or WEL-MVF-NN
ORP Sensor
102594
O-Ring

102586
102423 Nut
Elbow

WCT900 Sensor Options PAFHON, PBFHON, PAFION, PBFION

103425
Nipple

191935-06
Sensor, Corrosion 102594
103425 103425 O-Ring 191646-03* or 191647-03*
104203
Nipple Nipple Sensor, ASM, Ccond, Passive
Fitting, Gland, Corrosion
103425 102884 103515
Nipple Tee Valve

102879-01
Tee

PBFHON: 316SS contacting conductivity + pH + Corrosion + Flow Switch manifold on panel + Rod ORP
PAFHON: Graphite contacting conductivity + pH + Corrosion + Flow Switch manifold on panel + Rod ORP
 192009-03*
Manifold 102586
Nut
Ccond / Dis / Corr / Pyxis

190998-03*

PAFIOP: + Flat ORP

PBFIOP: + Flat ORP

190997-03* Switch

+ Rod ORP
+ Rod ORP
Flow Switch Assembly
Assembly 3 ft. Cable
102594
O-Ring
191020-03*
Switch/Float 190996
Assembly 3 ft. Cable Float
102586
Nut
102919
O- Ring

104307
102961 Screws 191652-03* 102881
Hanger Preamp Flow Switch
Body

103886
Screws 103425
Nipple

WEL-PHF-NN

153
pH Sensor
ST-500
WEL-MVR-NN or WEL-MVF-NN Pyxis Sensor
ORP Sensor

102594
O-Ring 103425
Nipple
102423
Elbow

WCT900 Sensor Options PAFHOP, PBFHOP, PAFIOP, PBFIOP

102586
191935-06 103425 Nut
Sensor, Corrosion Nipple

103425 103425 103425

Nipple Nipple Nipple
*Use -20 for 20 foot cables 104203 191646-03* or 191647-03*
102879-01 102884 103515 102594 Sensor, ASM, Ccond, Passive
Fitting, Gland, Corrosion Tee Tee Valve O-Ring

PBFHOP: 316SS contacting conductivity + pH + Corrosion + Pyxis + Flow Switch manifold on panel
PAFHOP: Graphite contacting conductivity + pH + Corrosion + Pyxis + Flow Switch manifold on panel
 190997-03*
191935-06 Flow Switch
Corrosion Sensor Assembly 3 ft. Cable 102586
192012-03* Nut
Manifold
191020-03*

PAFIPR: + Flat ORP

PBFIPR: + Flat ORP

Ccond / Pyxis / Dual pH / Dual Corr

+ Rod ORP
+ Rod ORP
Switch/Float 190998-03*
102061 Assembly 3 ft. Cable Switch
Tee Assembly

190996
102917
Float
Nipple

104203 102919
102423 Gland O- Ring
Elbow
102926
102586 Nipple 102594
Nut O-Ring
104307
Screws
102881
Flow Switch
102961 Body
Hanger 103886
Screws 102423 WEL-MVR-NN
Elbow WEL-MVF-NN 103425
102377 ORP Sensor Nipple
Hanger 191652-03*

154
Preamp
102917
104203 ST-500
Nipple
Gland Pyxis Sensor

191935-06 103425
Corrosion Sensor 102061 Nipple
Tee
WEL-PHF-NN 102879-01
pH Sensor Elbow

WCT900 Sensor Options PAFHPR, PBFHPR, PAFIPR, PBFIPR

103425 102594 103425 102594
Nipple O-Ring Nipple O-Ring

102884 102594
Tee O-Ring 103515
Valve
102884
Tee
191646-03* or 191647-03*
Sensor, Ccond, Passive
*Use -20 for 20 foot cables 102586
Nut

PBFHPR: 316SS contacting conductivity + pH + Dual Corrosion + Pyxis + Flow Switch manifold on panel
PAFHPR: Graphite contacting conductivity + pH + Dual Corrosion + Pyxis + Flow Switch manifold on panel
 191956-03*
Manifold Ccond, Dual pH, Dual Corr

PAFIRN: + Flat ORP

PBFIRN: + Flat ORP

+ Rod ORP
+ Rod ORP
191935-06 104203
Sensor, Corrosion Gland
102586
102061 Nut
Tee

102917 190998-03*
Nipple Switch
Assembly
102423
Elbow 102594
102586 O-Ring
Nut
104307 190996
102961 Screws Float
Hanger
191652-03*
Preamp 102919
102423 O- Ring
103886 Elbow

155
Screws
191935-06 102881
Sensor, Corrosion WEL-MVR-NN Flow Switch
WEL-MVF-NN Body
ORP Sensor
WEL-PHF-NN 102926
pH Sensor Nipple

103425
Nipple
104203 103425 102594
Gland Nipple O-Ring 102879-01

WCT900 Sensor Options PAFHRN, PBFHRN, PAFIRN, PBFIRN

Tee
102061 103425 102884
Tee Nipple Tee 102594 102884
O-Ring Tee 103515
103425 Valve
Nipple

191646-03* or 191647-03*
Sensor, Ccond, Passive
102594
102586 O-Ring
*Use -20 for 20 foot cables Nut

PBFHRN: 316SS contacting conductivity + pH + Dual Corrosion + Flow Switch manifold on panel
PAFHRN: Graphite contacting conductivity + pH + Dual Corrosion + Flow Switch manifold on panel
 192002-PYX-03*
Manifold
Ccond / Dual pH 102586
Nut

190997-03*

PAFIPN: + Flat ORP

PBFIPN: + Flat ORP

190998-03*
Flow Switch
Switch
Assembly 3 ft. Cable
Assembly
191020-03*
Switch/Float 102594
Assembly 3 ft. Cable O-Ring

102586
Nut 190996
Float

102919
O- Ring
104307
Screws
102961
102881
Hanger
191652-03* Flow Switch
Preamp Body

103425
103886 Nipple
Screws

156
WEL-PHF-NN ST-500
pH Sensor Pyxis Sensor

WEL-MVR-NN or WEL-MVF-NN
ORP Sensor 103425
Nipple
102594
O-Ring 102586
Nut

WCT900 Sensor Options PAFHPN, PBFHPN, PAFIPN, PBFIPN

102423
Elbow

103425
Nipple
103425
103425 Nipple 191646-03* or 191647-03*
Nipple
102423 Sensor, ASM, Ccond, Passive

*Use -20 for 20 foot cables Elbow

103425 102884 103515 102594
Nipple Tee Valve O-Ring

PBFHPN: 316SS contacting conductivity + pH + Pyxis + Flow Switch manifold on panel + Rod ORP
PAFHPN: Graphite contacting conductivity + pH + Pyxis + Flow Switch manifold on panel + Rod ORP
 192002-03*
Manifold
Ccond / pH / Dip / Dis
190997-03* 102586
Flow Switch Nut
Assembly 3 ft. Cable
102586 191655-03
191020-03* Nut Cable
Switch/Float

PAFLMN: + Chlorine Dioxide

PBFLMN: + Chlorine Dioxide

Assembly 3 ft. Cable Disinfection Sensor
191445 or 191280
191377
Kit
190998-03*
Switch 103419
Assembly Washer Set

190996 103422
104307 Float O-Ring
Screws 100399
102586 102594 Nipple 103419
102961 O-Ring Washer Set
Hanger Nut

191652-03* 102919 102594

103886 Preamp O- Ring O-Ring
Screws
102784 102881
WEL-PHF-NN 102884 Elbow Flow Switch

157
Flat pH Cartridge Tee Body

102423 102594 102594 102881 102442 102381

Elbow O-Ring O-Ring Flow Switch Bushing Adapter
Body
103425 104164
Nipple 103425 Bushing
Nipple
100799
102423 102884 Screw
Elbow Tee
104235
103425 Bracket
103425 103425 Nipple

WCT900 Sensor Options PAFKMN, PBFKMN, PAFLMN, PBFLMN

Nipple Nipple
104158
Rotameter
191646-03*
or 191647-03* 104163
Sensor Nipple
102586
Nut
103963
Little Dipper 103515 104174 103686 104159
Valve Nipple Valve Elbow
102586 103515
Nut Valve
*Use -20 for 20 foot cables

PBFKMN: 316SS contacting conductivity + pH + LD2 + Flow Switch manifold on panel + Chlorine
PAFKMN: Graphite contacting conductivity + pH + LD2 + Flow Switch manifold on panel + Chlorine
 191778-03* 102586
Manifold Nut
Ccond / pH / Cl2 / Br2 191655-03*
Cable
191445
Cl2 / Br2
Sensor

190997-03* 191377
Flow Switch Kit

PAFLNN: + Chlorine Dioxide

PBFLNN: + Chlorine Dioxide

Assembly 3 ft. Cable
103419
Washer Set
102784
102586 Elbow
191020-03* 103422
Nut 100399 O-Ring
Switch/Float
Nipple
Assembly 3 ft. Cable 103419
102784 Washer Set
104307 190998-03*
Screws Elbow
Switch 102594
O-Ring
Assembly
102586
Nut 102881
190996 Flow Switch
Float Body
191652-03*
Preamp 102919 100399 102381
O- Ring Nipple Adapter
102423
102961 103886 Elbow 102594 104164

158
Hanger Screws O-Ring 102442 Bushing
WEL-PHF-NN Bushing
pH Sensor 100799
102881 Screw
102425 Flow Switch 104163
Nipple Body Nipple 104235
Bracket
102594
O-Ring 102897
Tee 104158
Rotameter
102423
Elbow
102897 104163
Tee Nipple
102425 102884

WCT900 Sensor Options PAFKNN, PBFKNN, PAFLNN, PBFLNN

Nipple Tee 104164
Bushing
102425
Nipple
103686
102594 Valve
O-Ring
104159
191646-03* Elbow
191647-03* 103515 104174 103686
Ccond Sensor Valve Nipple Valve
*Use -20 for 20 foot cables 102586
Nut

PBFKNN: 316SS contacting conductivity + pH + Flow Switch manifold on panel + Chlorine

PAFKNN: Graphite contacting conductivity + pH + Flow Switch manifold on panel + Chlorine
 191798-03* 102586
Manifold Nut
Ccond / pH / Cl2 / Br2
102586 191655-03*
Cable
Nut
190997-03* 191445
Flow Switch 190998-03* Cl2 / Br2
Sensor
Assembly 3 ft. Cable Switch

PAFLPN: + Chlorine Dioxide

PBFLPN: + Chlorine Dioxide

Assembly
191377
191020-03* Kit
Switch/Float 190996
Assembly 3 ft. Cable Float 103419
Washer Set
102919
O- Ring 103422
O-Ring
102594
103419
O-Ring 102784 Washer Set
Elbow
104307 102881 102594
Screws O-Ring
Flow Switch
Body
102881
Flow Switch
102586 102425 Body
Nut Nipple 100399
Nipple 102381
191652-03* Adapter

159
Preamp
102961 103886 102423 102442 104164
Hanger Screws Elbow WEL-PHF-NN Bushing Bushing
pH Sensor 100799
104163 Screw
102594 Nipple
102425 O-Ring 104235
Nipple ST-500 Bracket
Pyxis Sensor

102423 102425 104158

Elbow Nipple Rotameter

WCT900 Sensor Options PAFKPN, PBFKPN, PAFLPN, PBFLPN

102897 104163
Tee Nipple
102425 102884
Nipple Tee 104164
Bushing
102594 103686
O-Ring Valve
191646-03* 104159
191647-03* Elbow
Ccond Sensor 103515 104174 103686
Valve Nipple Valve
102586
*Use -20 for 20 foot cables Nut

PBFKPN: 316SS contacting conductivity + pH + Pyxis + Flow Switch manifold on panel + Chlorine
PAFKPN: Graphite contacting conductivity + pH + Pyxis + Flow Switch manifold on panel + Chlorine
 191986-03*
Manifold
Ccond / pH / Cl2 / Br2 / Corr

+ Chlorine

+ Chlorine
102586
Nut
190997-03* 191655-03*
Flow Switch Cable
Assembly 3 ft. Cable 191445

PAFLRN: + Chlorine Dioxide

PBFLRN: + Chlorine Dioxide

Cl2 / Br2
191020-03* 190998-03* Sensor
Switch/Float Switch 191377
Assembly 3 ft. Cable Assembly Kit
103419
102586 190996 102784 Washer Set
Nut Float Elbow 103422
O-Ring
104307 191965-06 100399
Screws Corrosion Sensor Nipple 103419
Washer Set
102586 102423 103425 102061 104203 102784 102594
Nut Elbow Nipple Tee Gland Elbow O-Ring
102881
102423 191652-03* Flow Switch
102961 103886 Body
Hanger Elbow Preamp
Screws 102381
100399

160
WEL-PHF-NN Nipple Adapter
pH Sensor
102442 104164
102425 Bushing Bushing
Nipple
102919 104163
O- Ring Nipple
102594 100799
104203 O-Ring Screw
Gland 102881
Flow Switch 104235
191965-06 Bracket
Corrosion Sensor Body
102442 104158
Bushing Rotameter

WCT900 Sensor Options PAFKRN, PBFKRN, PAFLRN, PBFLRN

102061 102425 102594 102884 102926
Tee Nipple O-Ring Tee Nipple
104163
Nipple
102425
Nipple
104164
Bushing
191646-03*
191647-03* 103686
Ccond Sensor Valve

102586 102594 103515 102897 104174 103686 104159

*Use -20 for 20 foot cables Nut O-Ring Valve Tee Nipple Valve Elbow

PBFKRN: 316SS contacting conductivity + pH + Dual Corrosion + Flow Switch manifold on panel
PAFKRN: Graphite contacting conductivity + pH + Dual Corrosion + Flow Switch manifold on panel
 191960-03*
Manifold
Ccond / pH / ORP / Corr

PAIONN: + Flat ORP

PBIONN: + Flat ORP

PAHONN: + Rod ORP

PBHONN: + Rod ORP

190997-03* 102586
Flow Switch Nut
Assembly 3 ft. Cable
190998-03*
191020-03* Switch
Switch/Float Assembly
Assembly 3 ft. Cable
190996
Float
102586
102961 Nut 102919
Hanger 104307
Screws O- Ring

191652-03*
103886 103425 Preamp 102594
Screws Nipple
O-Ring
WEL-MVR-NN

161
WEL-MVF-NN
WEL-PHF-NN 102881
Sensors Flow Switch
Body

104203
Gland
102926
191935-06 103425 102061 103425 Nipple
Sensor, Corrosion Nipple Tee Nipple
102594
O-Ring
102884 102879-03
Tee Elbow
103425
Nipple
103515
191646-03* Valve
191647-03* 102594
Ccond Sensors O-Ring
102586
Nut
*Use -20 for 20 foot cables

PBFONN: 316SS contacting conductivity + Corrosion + Flow Switch manifold on panel + pH

PAFONN: Graphite contacting conductivity + Corrosion + Flow Switch manifold on panel + pH
WCT900 Sensor Options PAFONN, PBFONN, PAHONN, PBHONN, PAIONN, PBIONN
 191960-PYX-03* 102586
Manifold Nut
Ccond / pH / ORP / Corr / Pyxis

PAIOPN: + Flat ORP

PBIOPN: + Flat ORP

190998-03*

PAHOPN: + Rod ORP

PBHOPN: + Rod ORP

190997-03* Switch
Flow Switch Assembly
Assembly 3 ft. Cable
190996
Float
191020-03*
Switch/Float 102919
Assembly 3 ft. Cable O- Ring

102594
O-Ring

102881
102961
Hanger 104307 Flow Switch
Screws Body

103886
Screws 102586 102926
Nut Nipple

102423 191652-03*

162
Elbow Preamp

WEL-MVR-NN ST-500
Pyxis Sensor
WEL-MVF-NN
104203 WEL-PHF-NN
Gland Sensors

191935-06 103425
Corrosion Sensor Nipple
102926
Nipple
102061
Tee

103425 102594 102884 103425 102879-03

Nipple O-Ring Tee Nipple Elbow

191646-03*
191647-03* 103515
Ccond Sensors Valve

102586 102594
*Use -20 for 20 foot cables Nut O-Ring

WCT900 Sensor Options PAFOPN, PBFOPN, PAHOPN, PBHOPN, PAIOPN, PBIOPN

PBFOPN: 316SS contacting conductivity + Corrosion + Pyxis + Flow Switch manifold on panel + pH
PAFOPN: Graphite contacting conductivity + Corrosion + Pyxis + Flow Switch manifold on panel + pH
 193101-03*
Manifold

PAIPNN: + Flat ORP

PBIPNN: + Flat ORP

Ccond / pH / ORP / Dual Corr 102586

PAHPNN: + Rod ORP

PBHPNN: + Rod ORP

Nut

190998-03*
190997-03* Switch
Flow Switch Assembly
Assembly 3 ft. Cable

102594
O-Ring
191020-03*
Switch/Float
Assembly 3 ft. Cable 190996
Float

102961 102919
Hanger O- Ring
103886 104307 102586
Screws Screws Nut
102881
102377 Flow Switch
Hanger Body
191652-03*
Preamp 103425

163
Nipple

WEL-MVR-NN
WEL-MVF-NN ST-500
WEL-PHF-NN PYXIS Sensor
Sensor

102594 103425
O-Ring Nipple

102879-01
102423 Tee
Elbow
102594 102586
O-Ring Nut
103425
Nipple

102423 102884 103425

Elbow Tee Nipple

PBFPNN: 316SS contacting conductivity + Pyxis + Flow Switch manifold on panel + pH

*Use -20 for 20 foot cables

PAFPNN: Graphite contacting conductivity + Pyxis + Flow Switch manifold on panel + pH

103425 103515 191646-03* or 191647-03*
Nipple Valve Sensor, Ccond, Passive

WCT900 Sensor Options PAFPNN, PBFPNN, PAHPNN, PBHPNN, PAIPNN, PBIPNN

 
 
  
 

PAIPRN: + Flat ORP

PBIPRN: + Flat ORP



PAHPRN: + Rod ORP

PBHPRN: + Rod ORP


 


 
 

 



 

 
 
4307 
  


 
 
 

 
 
  
 

164




 

 
 
 
 

 
 
 
 
 




 
 

WCT900 Sensor Options PAFPRN, PBFPRN, PAHPRN, PBHPRN, PAIPRN, PBIPRN

PBFPRN: 316SS contacting conductivity + Dual Corrosion + Pyxis + Flow Switch manifold on panel + pH
PAFPRN: Graphite contacting conductivity + Dual Corrosion + Pyxis + Flow Switch manifold on panel + pH
 190997-03*
191954-03* Flow Switch
Manifold Assembly 3 ft. Cable

PAIRNN: + Flat ORP

PBIRNN: + Flat ORP

Ccond / pH / ORP / Corr

PAHRNN: + Rod ORP

PBHRNN: + Rod ORP

191020-03*
102586
Switch/Float Nut
Assembly 3 ft. Cable
191965-06
Corrosion Sensor 190998-03*
Switch
102586 102061 104203 Assembly
Nut Tee Gland
190996
104307 Float
Screws
102919
O- Ring
102423
Elbow 102594
O-Ring
103425
102961 103886 Nipple
Hanger Screws

102423 102917 102926 102881

Elbow Nipple Nipple Flow Switch

165
Body

104203 191965-06
Gland Corrosion Sensor 102926
Nipple

102061 191652-03* 102425

Tee Preamp Nipple 102897
Tee
102884
WEL-PHF-NN Tee
WEL-MVR-NN 102594
102594 O-Ring
WEL-MVF-NN O-Ring
pH Sensor
102425 103515
Nipple Valve

191646-03*
191647-03*
Ccond Sensor

102586
Nut

*Use -20 for 20 foot cables

WCT900 Sensor Options PAFRNN, PBFRNN, PAHRNN, PBHRNN, PAIRNN, PBIRNN

PBFRNN: 316SS contacting conductivity + Dual Corrosion + Flow Switch manifold on panel + pH
PAFRNN: Graphite contacting conductivity + Dual Corrosion + Flow Switch manifold on panel + pH
 191955-03* 102586 190997-03*
Manifold Nut Flow Switch
Ccond / pH / ORP / Dual Corr 191935-06 Assembly 3 ft. Cable
Corrosion Sensor
191020-03*

PAIMRN: + Flat ORP

PBIMRN: + Flat ORP

102061

PAHMRN: + Rod ORP

104203

PBHMRN: + Rod ORP

Tee Switch/Float
Gland Assembly 3 ft. Cable

102917 190998-03*
Nipple Switch
Assembly
102423
Elbow 102594
O-Ring
102586 190996
Nut Float
102919
102961 104307 102423 102926 O- Ring
Hanger Screws Elbow Nipple
102881
102377 104203 191652-03* Flow Switch
Hanger 103886 Gland Preamp Body
Screws
103425 WEL-MVR-NN 103425

166
Nipple or WEL-MVF-NN Nipple
or WEL-PHF-NN
Sensor
102884
Tee

102594
191935-06 O-Ring
Corrosion Sensor
103425
102061 103425 102884 Nipple
Tee Nipple Tee

103963 102879-01
Sensor Little Dipper Tee

102586
102594 103515
Nut
O-Ring Valve
191646-03* or 191647-03* 103425
Sensor, Ccond, Passive Nipple
*Use -20 for 20 foot cables
102586
Nut

WCT900 Sensor Options PAFMRN, PBFMRN, PAHMRN, PBHMRN, PAIMRN, PBIMRN

PBFMRN: 316SS contacting conductivity + LD2 + Dual Corrosion + Flow Switch manifold on panel + pH
PAFMRN: Graphite contacting conductivity + LD2 + Dual Corrosion + Flow Switch manifold on panel + pH
 102586
191777-03* Nut
Manifold 191445
Ccond / Cl2 / Br2 CL2 / Br2 Sensor or
191280 191655-03
CL02 Sensor Cable

191377
100399 Kit
Nipple
103419

PALNNN: + Chlorine Dioxide

PBLNNN: + Chlorine Dioxide

Washer Set
103422
O-Ring
102442
102784 Bushing 103419
Elbow Washer Set
102594
190997-03* O-Ring
Flow Switch
Assembly 3 ft. Cable 102881
104307 Flow Switch
102961 Screws Body
Hanger 102586
191020-03* Nut 102381
Switch/Float Adapter
Assembly 3 ft. Cable
104164
103886 Bushing
Screws
190998-03*

167
104163
Switch Nipple
Assembly 190996
Float 100799
102919 Screw
O- Ring 104235
Bracket
102594 104158
O-Ring Rotameter
102881 104163
Flow Switch Nipple
Body
104164
102917 Bushing
Nipple

WCT900 Sensor Options PAKNNN, PBKNNN, PALNNN, PBLNNN

103686
Valve

104159
Elbow

PBKNNN: 316SS contacting conductivity + Flow Switch manifold on panel + Chlorine

191646-03* or 191647-03* 102917

PAKNNN: Graphite contacting conductivity + Flow Switch manifold on panel + Chlorine

Sensor, ASM, Ccond, Passive Nipple

102586 102594 103515 102879-03

Nut O-Ring Valve Elbow
*Use -20 for 20 foot cables
 PALONN:

PAOSNN:
PBLONN:
PAKONN:
PBKONN:
Sensor Options:
192008-03* Disinfection Sensor 102586
Manifold Ccond Passive (Sold Separately) Nut
191445 - Chlorine Sensor
191280 - ClO2 Sensor
191655-03
Cable

+ Corrosion
102442
190997-03* Bushing
Flow Switch 102784 100399 191377
Assembly 3 ft. Cable Elbow Nipple Kit

103419
Washer Set

191020-03* 103422
O-Ring
Switch/Float 102586
Assembly 3 ft. Cable Nut 103419
Washer Set
102594
O-Ring
190996 190998-03* 102881
Float Switch Flow Switch
Assembly Body
102961 102381
Hanger Adapter
104307
Screws 102594 102919 104164
O-Ring O- Ring Bushing

168
103886 104163
Screws Nipple
103425 102881
Nipple Flow Switch 100799
Body Screw
104235
103425 Bracket
Nipple 104158
Rotameter
104163
104203 Nipple
Gland 104164
Bushing
191935-06 103686
Sensor, Corrosion Valve
102061 103969
Tee Nipple
104159
103425 102917 Elbow
Nipple Nipple
191646-03* or 191647-03* 102879-03
Sensor, ASM, Ccond, Passive 103515 Elbow

WCT900 Sensor Options PAKONN, PBKONN, PALONN, PBLONN, PAOSNN

Valve
102586 102594
Nut O-Ring

316SS contacting conductivity + Flow Switch manifold on panel + ClO2 + Corrosion

Graphite contacting conductivity + Flow Switch manifold on panel + ClO2 + Corrosion
316SS contacting conductivity + Flow Switch manifold on panel + Chlorine + Corrosion
Graphite contacting conductivity + Flow Switch manifold on panel + Chlorine + Corrosion

Graphite contacting conductivity + Flow Switch manifold on panel + Disinfection (no sensor)
 190997-03*
192015-03*
Flow Switch 102586
Manifold
Assembly 3 ft. Cable
Ccond / Pyxis / Dual Corr Nut

191020-03* 190998-03*
Switch/Float Switch
Assembly 3 ft. Cable Assembly

190996
191935-06 Float
Corrosion Sensor
104203
Gland

102919
O- Ring

102594
102061 O-Ring
Tee
102961 104307
Hanger Screws 102881
Flow Switch

WCT900 Sensor Options PAPRNN, PBPRNN

102917 Body
102377 103886 Nipple

169
Hanger Screws 103425
Nipple
102926
Nipple
ST-500
Pyxis Sensor

102423 103425
Elbow Nipple

102879-01
103425 Tee
Nipple
102594 102586
O-Ring Nut
191935-06
Corrosion Sensor

104203 102061 103425 103515 191646-03* or 191647-03*

*Use -20 for 20 foot cables Gland Tee Nipple Valve Sensor, Ccond, Passive

PBPRNN: 316SS contacting conductivity + Dual Corrosion + Pyxis + Flow Switch manifold on panel
PAPRNN: Graphite contacting conductivity + Dual Corrosion + Pyxis + Flow Switch manifold on panel
 191952-03* 190997-03*
Manifold Flow Switch
Assembly 3 ft. Cable 102586
Ccond / Dual Corr
Nut
191020-03*
190998-03*
Switch/Float
Assembly 3 ft. Cable Switch
Assembly

191935-06 190996
Corrosion Sensor Float

104203
Gland

102919
O- Ring

102594
102961 O-Ring
104307
Hanger Screws
102881
102061
Flow Switch
Tee

WCT900 Sensor Options PARNNN, PBRNNN

102377 103886 Body
Hanger Screws

170
102926
102917 Nipple
Nipple

102879-01
Tee
102423
Elbow
102594 102586
O-Ring Nut
103425
Nipple

191935-06
Corrosion Sensor

104203 102061 103425 103515 191646-03* or 191647-03*

PBRNNN: 316SS contacting conductivity + Dual Corrosion + Flow Switch manifold on panel
Gland Tee Nipple Valve Sensor, Ccond, Passive
*Use -20 for 20 foot cables

PARNNN: Graphite contacting conductivity + Dual Corrosion + Flow Switch manifold on panel
 193004-03* 102586
Manifold Nut
Econd / pH / ORP / DIP
190998-03*
190997-03* Switch
102961 Flow Switch Assembly
Hanger

PCFIMN: + Flat ORP

Assembly 3 ft. Cable
102594
191020-03* O-Ring
Switch/Float
Assembly 3 ft. Cable 190996
Float
102881
Flow Switch 102919
Body O- Ring

103425 103425 102423

Nipple Nipple Elbow

104307 191157 103425

Screws Tee Assembly Nipple

191638-03* 102884
Econd Sensor 102594 Tee
O-Ring
102594
O-Ring

WCT900 Sensor Options PCFHMN, PCFIMN

102377 103963
Hanger Little Dipper 2

171
102586
103886 Nut
Screws
102586 102586
Nut Nut
191652-03*
Preamp
102586
WEL-PHF-NN
Nut
pH Sensor
103425
Nipple
102594
102423 O-Ring 102061
Elbow Tee

102884 103425 102381

Tee Nipple Adapter
103425
Nipple 103425 103515
Nipple Valve

102423 103425 102884 102594 WEL-MVR-NN or WEL-MVF-NN

*Use -20 for 20 foot cables Elbow Nipple Tee O-Ring ORP Sensor

PCFHMN: Electrodeless conductivity + pH + LD2 + Flow Switch manifold on panel + Rod ORP
 102586
191004-03*
Nut
Manifold
Econd / Dual pH 190998-03*
Switch

PCFINN: + Flat ORP

Assembly
190997-03*
Flow Switch 102594
Assembly 3 ft. Cable O-Ring

191020-03* 190996
Switch/Float Float
Assembly 3 ft. Cable 102586
102919
102586 Nut
O- Ring
Nut
102586 102881
102377 Nut Flow Switch
Hanger Body 191638-03*
104307 Econd Sensor
Screws 102423 103425
Elbow Nipple

102423 102594
Elbow O-Ring

WCT900 Sensor Options PCFHNN, PCFINN

102961 103886 191652-03* 103425
Hanger Screws Preamp Nipple

172
103425
Nipple 191157
Tee
WEL-MVR-NN or WEL-MVF-NN
ORP Sensor
WEL-PHF-NN
102423 pH Sensor 103425
Elbow Nipple
103425
Nipple

102594
O-Ring 102061
Tee
102884 103425 102594 103425
Tee Nipple O-Ring Nipple

102884 102381
Tee Adapter

103515

PCFHNN: Electrodeless conductivity + pH + Flow Switch manifold on panel + Rod ORP

Valve
*Use -20 for 20 foot cables
 102586
191788-03*
Nut
Manifold
Econd / pH / ORP / Pyxis 190997-03* 190998-03*
Flow Switch Switch
Assembly 3 ft. Cable Assembly

PCFIPN: + Flat ORP

190996
191020-03* Float
Switch/Float
Assembly 3 ft. Cable 102919
O- Ring
191157 102594
Tee Assembly O-Ring

102881
191638-03* 102594 Flow Switch
Econd Sensor O-Ring Body
104307
103425
Screws
Nipple

102423
Elbow
102586
Nut 103425

WCT900 Sensor Options PCFHPN, PCFIPN

102586 Nipple
Nut

173
102423 ST-500
102961 103886 Elbow Pyxis Sensor
Hanger Screws
103425
Nipple
191652-03*
Preamp 102061
WEL-MVR-NN Tee
WEL-MVF-NN 102381
103425 Sensors Adapter
Nipple
103515
Valve
104159
102423 103425 Elbow
Elbow Nipple

102594
O-Ring
102884
Tee
WEL-PHF-NN 103425 102594 102884 103425
Sensors Nipple O-Ring Tee Nipple
*Use -20 for 20 foot cables

PCFHPN: Electrodeless conductivity + pH + Pyxis + Flow Switch manifold on panel + Rod ORP
 102586
191792-03* Nut
Manifold 102586
Econd / pH / Dip / Dis Nut 191655
190997-03*
190998-03* Cable
Flow Switch
Assembly 3 ft. Cable Switch
Assembly 191445
Cl2 Sensor
191020-03*
190996
Switch/Float
Assembly 3 ft. Cable Float 191377

PCFLMN: + Chlorine Dioxide

Kit
102881 102919
O- Ring 103419
Flow Switch Washer Set
Body
102594

PCFMSN: + Disinfection (no sensor)

103422
103425 O-Ring O-Ring
Nipple
103419
104307 191157 Washer Set
Tee Assembly 102442
Screws Bushing 102594
102594 102784 O-Ring
102586 O-Ring Elbow 100399
Nut Nipple 102881
Flow Switch
102961 103886 Body
Hanger Screws 191638-03*
Econd Sensor 102381
Adapter

174
102586
Nut 104164
Bushing
191653-03* 103425 102423
Preamp Nipple Elbow 100799
Screw

WCT900 Sensor Options PCFKMN, PCFLMN, PCFMSN

102423 104235
Elbow 102884 Bracket
Tee
103425 104158
Nipple Rotameter
102594
102423 O-Ring 104163
Elbow Nipple

WEL-PHF-NN 103686
Flat pH Valve

103425 102594 103971

Nipple O-Ring Tee

103515
102884 103425 Valve
Tee Nipple
103963
*Use -20 for 20 foot cables 102586 Little Dipper 2 102061 102381 103969
Nut Sensor Tee Adapter Nipple

PCFKMN: Electrodeless conductivity + pH + LD2 + Flow Switch manifold on panel + Chlorine

 192001-03*
Manifold 102586
102586
Econd / pH / Cl2 Nut Nut

190997-03* 191655-03*
190998-03* Cable
Flow Switch
Switch
Assembly 3 ft. Cable
Assembly
191445-03*
191020-03* Cl2 Sensor
190996

PCFLPN: + Chlorine Dioxide

Switch/Float
Assembly 3 ft. Cable Float 191377
102919 Kit
102594 O- Ring
O-Ring 103419

PCFPSN: + Disinfection (no sensor)

Washer Set
102881
Flow Switch 102442
Bushing 103422
Body O-Ring
104307 191157 100399 103419
102784 Nipple
Screws Tee Assembly Elbow Washer Set
102961 102594
Hanger 102586 O-Ring
Nut
102594 102881
O-Ring Flow Switch

175
Body
103886
102381
Screws Adapter
103425
104164

WCT900 Sensor Options PCFKNN, PCFLNN, PCFSNN

102586 Nipple
Nut Bushing
102423 100799
191638-03* 191653-03* Elbow Screw
Econd Sensor Preamp
102423 104235
Elbow Bracket
103425 103516
Nipple Nipple 104158
Rotameter
WEL-PHF-NN
Flat pH 104163
Nipple
102423
Elbow
103686
Valve
103425
Nipple
103971
Tee
102594 103425 102381

PCFKPN: Electrodeless conductivity + pH + Pyxis + Flow Switch manifold on panel + Chlorine

O-Ring Nipple Adapter 103515
*Use -20 for 20 foot cables Valve
102884 102061 103969
Tee Tee Nipple
 191793-03*
Manifold 102586 102586
Econd / pH / Pyxis / Dis Nut Nut

190997-03* 190998-03* 191655

Flow Switch Switch Cable
Assembly 3 ft. Cable Assembly
191445
191020-03* 190996 Cl2 Sensor
Switch/Float Float

PCFLPN: + Chlorine Dioxide

Assembly 3 ft. Cable 191377
102919
Kit
102881 O- Ring
Flow Switch 103419
Body 102594 Washer Set

PCFPSN: + Disinfection (no sensor)

104307 O-Ring
103422
Screws 103425 O-Ring
Nipple
102442 103419
191157 Bushing Washer Set
Tee Assembly
102961 103886 102594
100399 O-Ring
Hanger Screws 102784 Nipple
Elbow
102881
Flow Switch
102586 Body
Nut
102381

176
191638-03* Adapter
102594
Econd Sensor O-Ring
104164
102423 Bushing
102586 Elbow
Nut 100799

WCT900 Sensor Options PCFKPN, PCFLPN, PCFPSN

Screw
191653-03* 103425
Preamp Nipple 104235
Bracket
102423
Elbow ST-500 104158
Pyxis Sensor Rotameter
103425
Nipple 104163
Nipple
WEL-PHF-NN
Flat pH
103686
102423 Valve
Elbow
103971
103425 102594 Tee
Nipple O-Ring
103515
103425 Valve
102884
Tee Nipple 104159
*Use -20 for 20 foot cables 102061 102381 103969 Elbow
Tee Adapter Nipple

PCFKPN: Electrodeless conductivity + pH + Pyxis + Flow Switch manifold on panel + Chlorine

 102586
Nut
191783-03* 190997-03*
Manifold Flow Switch 190998-03*
Econd / pH / DIP Assembly 3 ft. Cable Switch

PCIMNN: + Flat ORP

102961 Assembly

PCHMNN: + Rod ORP

Hanger 191020-03*
Switch/Float 190996
Assembly 3 ft. Cable Float

191157 102919
Tee Assembly O- Ring

102594
191638-03* 102594 O-Ring
Econd Sensor O-Ring 102881
Flow Switch
Body
102586
104307 Nut
Screws 103425
Nipple

102423
102586 Elbow
102377 103886
Nut
Hanger Screws

177
102423
Elbow

191652-03*
Preamp
103425 103425

WCT900 Sensor Options PCFMNN, PCHMNN, PCIMNN

Nipple 102594 Nipple
O-Ring
102423
Elbow 102884
Tee
WEL-PHF-NN
WEL-MVR-NN 103425
WEL-MVF-NN Nipple
Sensors
103425 102061
Nipple Tee
102884

PCFMNN: Electrodeless conductivity + LD2 + Flow Switch manifold on panel + pH

102586 Tee 102381
Nut Adapter
103963
Little Dipper 2 103425 103515
*Use -20 for 20 foot cables Nipple Valve
102594
O-Ring
 191003-03*
Manifold 102586
Econd / pH / ORP Nut

190997-03* 190998-03*

PCINNN: + Flat ORP

Flow Switch Switch

PCHNNN: + Rod ORP

Assembly 3 ft. Cable Assembly

190996
191020-03* Float
Switch/Float
Assembly 3 ft. Cable 102919
O- Ring
102594 102586
O-Ring Nut

102586 102881
Nut Flow Switch
102961 Body
Hanger 191638-03*
104307 191652-03*
or 103425 Econd Sensor
Screws Nipple
191653-03*
Preamp 102423
Elbow
102423 102594
Elbow 103425 O-Ring

178
Nipple
WEL-PHF-NN
102377 103886 WEL-MVR-NN
Hanger Screws Sensors 191157
Tee Assembly
103425
Nipple

103425
102423 Nipple
Elbow

103425 102594 102061

PCFNNN: Electrodeless conductivity + Flow Switch manifold on panel + pH

Nipple O-Ring Tee

102884 102917
Tee Nipple
102381
Adapter

PBENNN: Electrodeless conductivity + Flow Switch manifold on panel + pH with ATC

*Use -20 for 20 foot cables 103515
Valve

WCT900 Sensor Options PCFNNN, PCHNNN, PCINNN, WIN900 Sensor Option PBENNN
 193103-03* 102586
Manifold Nut
Econd / pH / Pyxis 190998-03*

PCIPNN: + Flat ORP

Switch
190997-03*

PCHPNN: + Rod ORP

Assembly
Flow Switch
Assembly 3 ft. Cable 190996
Float
191020-03* 102919
Switch/Float O- Ring
Assembly 3 ft. Cable
102594
O-Ring
191157
Tee Assembly 102881
Flow Switch
102594 Body
O-Ring 103425
104307 Nipple
Screws
102423
Elbow

179
102586 103425
102961 102377 103886 Nut Nipple
Hanger Hanger Screws
191638-03* ST-500

WCT900 Sensor Options PCFPNN, PCHPNN, PCIPNN

Econd Sensor Pyxis Sensor

102586 103425
Nut 191652-03* Nipple
Preamp
102423 102061
Elbow WEL-PHF-NN Tee
WEL-MVR-NN 102381
103425 WEL-MVF-NN Adapter
Nipple Sensors
103515
102423 Valve
Elbow 104159

PCFPNN: Electrodeless conductivity + Pyxis + Flow Switch manifold on panel + pH

Elbow
103425
Nipple

102594 102884 103425

O-Ring Tee Nipple
*Use -20 for 20 foot cables
 102586
192004-03* Nut
Manifold
Econd / CL2 / BR2 / CLO2 102586 191655-03*
Nut Cable
190997-03*
190998-03* 191445
Flow Switch
Switch CL2 / Br2 Sensor or
Assembly 3 ft. Cable 191280
Assembly
CLO2 Sensor

PCLNNN: + Chlorine Dioxide

191020-03* 190996
Float 191377
Switch/Float Kit
Assembly 3 ft. Cable 102919
O- Ring 103419

PCSNNN: + Disinfection (no sensor)

Washer Set
104307 102594
Screws O-Ring 102442 103422
Bushing O-Ring
100399 103419
102881 102784 Nipple Washer Set
Flow Switch Elbow
Body 102594
102961 103886 O-Ring
Hanger Screws
102881
191157 Flow Switch
Tee Assembly Body

180
102381
Adapter
103425
102586 Nipple 104417

WCT900 Sensor Options PCKNNN, PCLNNN, PCSNNN

Nut Reducer
102423 100799
191638-03* 102594 Elbow Screw
Econd Sensor O-Ring
104235
Bracket

104235
Rotameter
103516
Nipple 104417
Reducer

PCKNNN: Electrodeless conductivity + Flow Switch manifold on panel + Chlorine

102061 103686
Tee Valve

103971
102381 103969 Tee
Adapter Nipple
103515
*Use -20 for 20 foot cables Valve
 193010-03* 102586
Manifold Nut
Econd / DIP
102961 190998-03*
Hanger Switch
190997-03*
Assembly
Flow Switch
Assembly 3 ft. Cable
190996
Float
191020-03*
Switch/Float 102919
Assembly 3 ft. Cable
O- Ring

102594

WCT900 Sensor Option PCMNNN

O-Ring
102881
Flow Switch
104307 Body
Screws
103425
Nipple

102884
102377
103886 Tee

181
Hanger
Screws
103963
102594 Little Dipper 2
O-Ring
102586
Nut
102423
Elbow

103425
Nipple
103425
102594 Nipple
O-Ring

PCMNNN: Electrodeless conductivity + LD2 + Flow Switch manifold on panel

102061
Tee

102381
Adapter

191638-03* 191157 103515

Econd Sensor Tee Assembly Valve
102586
Nut
*Use -20 for 20 foot cables
 190995
Manifold 102586
ECond Nut
102586
190998-03* Nut
190997-03* Switch
Flow Assembly
Switch
Assembly 3 ft. Cable
190996
191020-03* Float
Switch/Float
Assembly 3 ft. Cable
Sold Separately
191638-03
102919 ECond
O- Ring

WCT900 Sensor Option PCNNNN

102594
O-Ring
102594
104307 O-Ring
Screws
102881
Flow Switch Body

102961
Hanger 103425
Nipple 191157
Tee

182
102377
Hanger

103886
Screws
102423
Elbow
103425
Nipple
102692 103425
Panel Nipple

PCNNNN: CPVC electrodeless conductivity + Flow Switch manifold on panel

102061
Tee
*Use -20 for 20 foot cables
102381
Adapter

103515
Valve
 193110-03*
Manifold
102961 Econd / Pyxis
Hanger 102586
Nut
190997-03*
Flow Switch
Assembly 3 ft. Cable 190998-03*
Switch
191020-03* Assembly
Switch/Float
Assembly 3 ft. Cable 190996
Float

102919
O- Ring

WCT900 Sensor Option PCPNNN

104307
102594
Screws
O-Ring

102423
102881
102377 103886 Elbow
Flow Switch
Hanger Screws
103425 Body
Nipple

183
103425
102586 102594 Nipple
Nut O-Ring

ST-500
Pyxis Sensor

103425
191638-03* Nipple
Econd Sensor

191157 102061

PCPNNN: Electrodeless conductivity + Pyxis + Flow Switch manifold on panel

Tee Assembly Tee

102381
Adapter

103515
*Use -20 for 20 foot cables Valve
 191011-03*
Manifold
pH / ORP

PFINNN: + Flat ORP

190997-03*
102586
Flow Switch Nut
Assembly 3 ft. Cable
190998-03*
191020-03* Switch
102586 Switch/Float Assembly
Nut Assembly 3 ft. Cable
190996
Float

102919
O- Ring
191652-03*
104307 Preamp
Screws
102594
O-Ring
WEL-MVR-NN
WEL-MVF-NN

WCT900 Sensor Options PFHNNN, PFINNN

Sensors
102423 102881
102377 102961 103886 Elbow Flow Switch
Hanger Hanger Screws

184
WEL-PHF-NN Body
Sensors
103425

PFHNNN: pH + Flow Switch manifold on panel + Rod ORP

Nipple 102926
Nipple

102423 103425
Elbow Nipple

102594 102884 103425 102061

O-ring Tee Nipple Tee

102594 102884 103425

O-ring Tee Nipple 102381
Adapter

103515
Valve

*Use -20 for 20 foot cables

 191782-03*
Manifold pH/ORP Disinfection
Sensor Options:
Disinfection Sensor
(Sold Separately) 102586
191445 - Chlorine Sensor Nut
191280 - ClO2 Sensor
191655-03
Cable

PFLNNN: + Chlorine Dioxide

102442
Bushing
190997-03* 191377
Flow Switch 102784 100399 Kit
Assembly 3 ft. Cable Elbow Nipple
103419
Washer Set

PFSNNN: + Disinfection (no sensor)

102586
Nut 103422
O-Ring
191020-03*
Switch/Float 103419
Assembly 3 ft. Cable Washer Set
190998-03* 102594
Switch O-Ring
Assembly
102881
104307 WEL-PHF-NN Flow Switch
Screws Body
102961 Flat pH Cartridge
Hanger 191652-03* 102381
Preamp Adapter

185
104164
Bushing
190996

PFKNNN: pH + Flow Switch manifold on panel + Chlorine

103886
Screws Float 104163
102586 Nipple
Nut 102919 100799
O- Ring

WCT900 Sensor Options PFKNNN, PFLNNN, PFSNNN

Screw
102594 104235
102423 O-Ring Bracket
Elbow
102881 104158
Flow Switch Rotameter
103425 Body 104163
Nipple 104163 Nipple
Nipple 104164
Bushing
102423
Elbow 103686
Valve
103969
Nipple

103971
103425 102884 103425 102381 102381 Tee
Nipple Tee Nipple Tee Adapter
103515
Valve
*Use -20 for 20 foot cables
 191445 chlorine 102586
Nut
191280 ClO2
other sensor (sold separately)
191655-03
Cable
191781
Manifold 102442
DIS Bushing
3 ft. Cable

100399 191377
Nipple Kit

102784 103422
Elbow O-Ring
102594
O-Ring
102586
190997-03* Nut
Flow 102881
104307 Switch Flow Switch Body
Screws Assembly 3 ft. Cable

102381
191020-03* Adapter
102961 Switch/Float
Hanger Assembly 3 ft. Cable 104164
Bushing
104163

186
103886 190998-03* Nipple
Screws Switch
Assembly 104158
102377
Hanger Rotameter

PLNNNN: Chlorine Dioxide + Flow Switch manifold on panel

104235
190996 Bracket
Float
102919 100795

PKNNNN: Extended pH Chlorine + Flow Switch manifold on panel

O- Ring Screw

PCNNNN: Disinfection (No Sensor) + Flow Switch manifold on panel

102594 104163
O-Ring
102692 Nipple
Panel
102881 104164
Flow Switch Body Bushing

*Use -20 for 20 foot cables 103686

102917 Valve
Nipple

102061 103971
Tee 102381 Tee
Adapter
103969 103515
Valve

WCT900 Sensor Options PKNNNN, PLNNNN. WIN900 Sensor Option PCNNNN

Nipple
 102586
Nut

Disinfection Sensor
(Sold Separately)

PBCLNN, PBCMNN
191990 191655-03
Cable
Manifold CON, PH/ORP

191377
190997-03* Kit
Flow Switch
Assembly 3 ft. Cable
102442 103419
191020-03* Bushing Washer Set
Switch/Float 102784 103422
Assembly 3 ft. Cable Elbow O-Ring

103419
Sensor Options 100399 Washer Set
Nipple
103903-10 Cell constant 0.01
103904-10 Cell constant 0.1 102594
103905-10 Cell constant 1 O-Ring
102961 103906-10 Cell constant 10
Hanger 104307 102881
Screws Gland Options Flow Switch
103907 Polypropylene 102586 Body

1.0 Low Pressure Generic conductivity

191669 Stainless Steel Nut
103886 102381
Screws Adapter
190998-03*
102061 Switch

187
Tee Assembly 104164
Bushing
102586
Nut 103425 190996
Nipple Float 100799
191653-03* Screw
Preamp with ATC 102919
O- Ring
102423
Elbow

PBCHNN: + Cell Constant 10 Low Pressure Generic conductivity

PBCLNN: + Cell Constant 10 High Pressure Generic conductivity

102881

PBCGNN: + Cell Constant 0.1 Low Pressure Generic conductivity

PBCJNN: + Cell Constant 1.0 High Pressure Generic conductivity

PBCINN: + Cell Constant 0.01 Low Pressure Generic conductivity

PBCKNN: + Cell Constant 0.1 High Pressure Generic conductivity

Flow Switch
WEL-PHF-NN

PBCMNN: + Cell Constant 0.01 High Pressure Generic conductivity

Body 104235
Flat pH Cartridge Bracket
103425 104158
Nipple Rotameter

104163
102423 Nipple
Elbow
103686
103425 Valve
Nipple
102594
O-Ring 103425 102381 103971
Nipple Adapter Tee
102884
Tee 103073 102061 103969 103515
*Use -20 for 20 foot cables Nipple Tee Nipple Valve

WIN900 Sensor Options PBCFNN, PBCGNN, PBCHNN, PBCINN, PBCJNN, PBCKNN,

PBCFNN: Flat pH with ATC + Disinfection (No Sensor) + Flow Switch manifold on panel + Cell Constant
10.0 Service Policy
Walchem controllers have a 2-year warranty on electronic components and a 1-year warranty on mechanical parts and
electrodes. See Statement of Limited Warranty in front of manual for details.

Walchem controllers are supported by a worldwide network of authorized master distributors. Contact your autho-
rized Walchem distributor for troubleshooting support, replacement parts, and service. If a controller is not function-
ing properly, circuit boards may be available for exchange after the problem has been isolated. Authorized distribu-
tors will provide a Return Material Authorization (RMA) number for any products being returned to the factory for
repair. Repairs are generally completed in less than one week. Repairs that are returned to the factory by next-day-air
freight will receive priority service. Out-of-warranty repairs are charged on a time and material basis.

FIVE BOYNTON ROAD HOPPING BROOK PARK HOLLISTON, MA 01746 USA

TEL: 508-429-1110 Web: www.walchem.com

188