Conductivity, pH/ORP + Disinfection

Intuition-9™ Series
Water Treatment
Controllers
Enjoy unparalleled versatility
and a collection of sensors and
powerful built-in algorithms for
control of chemical metering
pumps and valves in a broad range
of water treatment applications

KEY BENEFITS
• Email alarm messages, datalogs, graphs, or system summary reports
• Datalogging
• Ethernet or WiFi for remote access via the Internet, LAN,or optional BACnet or Modbus/TCP
• Large, full-color touchscreen display with icon based programming makes setup easy
• Universal sensor input provides extraordinary flexibility; the same controller can be used with
almost any type of sensor needed
• Four I/O slots allow complete flexibility in adding sensors, analog outputs and Linear Polarization
Resistance (LPR) corrosion sensors
• Multiple language support allows simple setup
• Three to twelve relay control outputs allow the controller to be used in more applications
• Sixteen virtual inputs and sixteen virtual outputs
• Economical wall-mount package for easy installation
• On-screen and web page graphing of sensor values and control output status
• Complete flexibility in the function of each relay
SPECIFICATIONS
MEASUREMENT PERFORMANCE
Range Resolution Accuracy
0.01 Cell Contacting Conductivity 0-300 µS/cm 0.01 µS/cm, 0.0001 mS/cm, 0.001 mS/m, 0.0001 S/m, 0.01 ppm ±1% of reading
0.1 Cell Contacting Conductivity 0-3,000 µS/cm 0.1 µS/cm, 0.0001 mS/cm, 0.01 mS/m, 0.0001 S/m, 0.1 ppm ±1% of reading
1.0 Cell Contacting Conductivity 0-30,000 µS/cm 1 µS/cm, 0.001 mS/cm, 0.1 mS/m, 0.0001 S/m, 1 ppm ±1% of reading
10.0 Cell Contacting Conductivity 0-300,000 µS/cm 10 µS/cm, 0.01 mS/cm, 1 mS/m, 0.001 S/m, 10 ppm ±1% of reading
pH -2 to 16 pH units 0.01 pH units ±0.01% of reading
ORP/Ion Selective Electrode -1500 to 1500 mV 0.1 mV ±1 mV
Disinfection sensors -2000 to 1500 mV 0.1 mV ±1 mV
0 - 2 ppm to 0 - 20,000 ppm Varies with range and slope Varies with range and slope
Electrodeless Conductivity 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
Temperature 23 to 500°F (-5 to 260°C) 0.1°F (0.1°C) ±1% of reading within range

Temp.°C Range Temp.°C Range

Multiplier% 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 above apply at 25°C. At higher temperatures,
the range is reduced per the range multiplier chart.

DIMENSIONS
SPECIFICATIONS
INPUTS OUTPUTS
Power Powered Mechanical Relays
(model code dependent) (0-12 model code dependent)
Relay Board Option 9: 100 to 240 VAC +/- 10%, 50 or 60 Hz, 20 A max Pre-powered on circuit board switching line voltage
All other options: 100 to 240 VAC +/- 10%, 50 or 60 Hz, 15 A max Two, three or four relays are fused together
(depending on model code) as one group,
Optional Auxiliary DC Power total current must not exceed 6.A (resistive),
12V or 24V, 10 Watts, fully isolated with short circuit protection 1/8 HP (93W)

Sensor Input Signals (0-8 depending on model code) Dry Contact Mechanical Relays
Contacting Conductivity: 0.01, 0.1, 1.0, or 10.0 cell constant, or (0-12 model code dependent)
Electrodeless Conductivity or 6 A (resistive), 1/8 HP (93W)
Disinfection or Dry contact relays are not fuse protected.
Amplified pH, ORP, or Ion Selective Electrode which requires a
preamplified signal. ±5VDC power available for external preamps. Pulse Outputs
Walchem WEL or WDS series pH/ORP sensors recommended. (0-12 model code dependent)
Each sensor input card contains a temperature input. Opto-isolated, solid-state relay, 200mA, 40V DC
Temperature: 100 or 1000 ohm RTD, 10K or 100K Thermistor VLOWMAX = 0.05V @ 18mA

Analog (4-20 mA) Sensor Input (0-24 depending on model code) 4 - 20 mA

2-wire loop powered and self-powered transmitters supported (0-16 model code dependent)
3-wire and 4-wire transmitters supported Internally powered, 15VDC, Fully isolated
All Channels fully isolated, input and power 600 ohm max resistive load
Channel 1, 130 ohm input resistance, Channel 2-6, 280 ohm Resolution 0.0015% of span
input resistance Accuracy ± 0.5% of reading
Available Power: Isolated 24 VDC ±15% supply per channel. 1.5 W Ethernet
(62.5 mA maximum for each channel) 10/100 802.3-2005
Auto MDIX support
Digital Input Signals (12):
Auto Negotiation
State-Type Digital Inputs
Electrical: Optically isolated and providing an electrically isolated 12V
power with a nominal 2.5 mA current when the digital input switch is WiFi
closed. Typical response time: < 2 seconds. Devices supported: Any Radio Protocol: IEEE 802.11 b/g/n
isolated dry contact (i.e. relay, reed switch). Types: DI State Security Protocols (Ad-Hoc Mode): WPA2-Personal
Security Protocols (Infrastructure Mode): WPA/WPA2-
Low Speed Counter-Type Digital Inputs Personal, WEP Certifications and Compliance: FCC, IC TELEC,
Electrical: Optically isolated and providing an electrically CE/ETSI, RoHS, WiFi Certified
isolated 12V power with a nominal 2.5 mA current when the digital input
switch is closed, 0-20 Hz, 25 msec minimum width. Devices supported: NOTE on WiFi:
Any device with isolated open drain, open collector, transistor or This equipment has been tested and found to comply with the limits for a Class A
reed switch. digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
Types: Contacting Flowmeter provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
High Speed Counter-Type Digital Inputs radiate radio frequency energy and, if not installed and used in accordance with the
Electrical: Optically isolated and providing an electrically isolated 12V instruction manual, may cause harmful interference to radio communications.
power with a nominal 2.5 mA current when the digital input switch is Operation of this equipment in a residential area is likely to cause harmful
interference in which casethe user will be required to correct the interference
closed, 0-500 Hz, 1.0 msec minimum width. Devices supported: Any at his own expense
device with isolated open drain, open collector, transistor or reed switch.
Types: Paddlewheel Flowmeter
USB
Connector: Type A receptacle
AGENCY CERTIFICATION Speed: High speed (480 Mbit)
Power: 0.5 A maximum
Safety: UL 61010-1:2012 3rd Ed + Rev:2019
CSA C22.2 No. 61010-1:2012 3rd Ed. + U1; U2 Battery (Real-Time Clock)
IEC 61010-1:2010 3rd Ed. + A1:2016 Model BR2032, 3-volt Lithium Coin Cell 20 mm diameter
EN 61010-1:2010 3rd Ed. + A1:2019
BS EN 61010-1:2010 + A1:2019 MECHANICAL (PERFORMANCE)
Enclosure Material Polycarbonate
Enclosure Rating Certified to UL 50 and UL 50E Type 4X
EMC: IEC 61326-1:2020 IEC 60529 meets IP66
EN 61326-1:2013 Environmental Conditions Can be installed indoors and outdoors.
Suitable for wet location
BS EN 61326-1:2013 Dimensions 13.13”W x 14.43”H x 6.7”D
Notes:
For EN 61000-4-3 Radiated RF Immunity, the controller meets Performance Criteria B. (333 mm x 367mm x 167 mm)
In environments where severe radio-frequency interference (RFI) is present, the pH electrode Display 7.0”TFT Color Display1024x3
and the WiFi module can be affected. If this occurs, the controller should be relocated away (RGB) x 600 pixels with capacitive touchscreen
from the electromagnetic interference (EMI) source.
Ambient Temperature -4 to 122°F (-20 to 50°C)
For EN 61000-4-6 Conducted RF Immunity, the controller meets Performance Criteria B. In Storage Temperature -4 to 176°F (-20 to 80°C)
environments where severe radio-frequency interference (RFI) is present, the pH electrode Humidity 10 to 90%, non-condensing
and the contacting conductivity sensor can be affected. If this occurs, the controller should Pollution Degree 2
be relocated away from the electromagnetic interference (EMI) source. Overvoltage Category II
Altitude 2000 m (6560 ft) max
SPECIFICATIONS

MECHANICAL (SENSORS) (*see graph)

Sensor Pressure Temperature Materials Process Connections

CPVC, FKM in-line
CPVC: 32-158°F (0 to 70°C)* o-ring 1” NPTM submersion
Electrodeless conductivity 0-150 psi (0-10 bar)*
PEEK: 32-190°F (0 to 88°C) PEEK, 316 SS in-line 2” NPTM in-line adapter
adapter
pH 0-100 psi (0-7 bar)* 50-158°F (10-70°C)* CPVC, Glass, FKM
1” NPTM submersion
o-rings, HDPE, Titanium
ORP 0-100 psi (0-7bar)* 32-158°F (0-70°C)* 3/4” NPTF in-line tee
rod, glass-filled PP tee
Contacting conductivity
0-200 psi (0-14 bar) 32-248°F (0-120°C) 316SS, PEEK 3/4” NPTM
(Condensate)
Contacting conductivity Graphite (Cooling Graphite, Glass-filled PP,
0-150 psi (0-10 bar)* 32-158°F (0-70°C)* 3/4” NPTM
Tower) FKM o-ring
316SS, Glass-filled PP,
Contacting conductivity SS (Cooling Tower) 0-150 psi (0-10 bar)* 32-158°F (0-70°C)* 3/4” NPTM
FKM 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,
pH (High Pressure) 0-300 psi (0-21 bar)* 32-275°F (0-135°C)* 1/2” NPTM gland
316SS, FKM
Platinum, Polymer,
ORP (High Pressure) 0-300 psi (0-21 bar)* 32-275°F (0-135°C)* 1/2” NPTM gland
PTFE, 316SS, FKM
Free Chlorine/Bromine 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)
Extended pH Range Free Chlorine/Bromine 0-14.7 psi (0-1 bar) 32-113°F (0-45°C)
Total Chlorine 0-14.7 psi (0-1 bar) 32-113°F (0-45°C) PVC, Polycarbonate
1/4” NPTF Inlet
Chlorine Dioxide 0-14.7 psi (0-1 bar) 32-122°F (0-50°C) silcone rubber, SS
3/4” NPTF Outlet
PEEK, FKM, 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 3/4” NPTM
o-ring
Flow switch manifold 0-150 psi (0-10 bar) up to 100°F 32-140°F (0-60°C)* GFRPP, PVC, FKM, 3/4” NPTF
(38°C)* Isoplast
0-50 psi (0-3 bar) at 140°F (60°C)
Flow switch manifold Carbon steel, Brass,
0-300 psi (0-21 bar)* 32-158°F (0-70°C)* 3/4” NPTF
(High Pressure) 316SS, FKM
Little Dipper 2 0-100 psi (0-7 bar)* 32-122°F (0-50°C)* PVC, GRFPP, FKM 3/4” NPTF in-line tee

Pyxis 0-100 psi (0-7 bar)* 40-104°F (4-40°C)* CPVC, Quartz, FKM 3/4” NPTF in-line tee

Bar PSI
Pressure vs. Temperature
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

°C
10.0
15.5
21.1
26.6
32.2
-1.1
4.4
 MODEL CODES FOR FIXED RELAYS
W CT9 0000 P AADE W M H S ANNNN
Label Base Relay Board/Pigtails Power Cord I/O Module#1-4 WiFi Protocol Auxiliary Power - Sensor Mounting Sensor Option

W IN9 0000 P AADE W M H S ANNNN

Label Base Relay Board/Pigtails Power Cord I/O Module#1-4 WiFi -
Protocol Auxiliary Power Sensor Mounting Sensor Option

W BL9 0000 P AADE W M H ANNNNN

Label Base Relay Board/Pigtails Power Cord I/O Module#1-4 WiFi Protocol Auxiliary Power - Sensor Option

LABEL SENSOR MOUNTING

W Walchem N None
BASE S Submersion
CT9 Cooling Tower I Inline
L Loose flow switch manifold
BL9 Boiler
P Flow switch manifold on panel
IN9 pH, Disinfection, Conductivity F Loose high pressure flow switch manifold
H High Pressure flow switch manifold on panel*
RELAY BOARD/PIGTAILS S Submersion
0000 8 Powered Relays I Inline
1000 7 Powered 1 Dry Relays L Loose flow switch manifold
2000 2 Opto 6 Dry Relays P Flow switch manifold on panel
3000 4 Powered 4 Dry Relays
4000 4 Opto 4 Dry Relays SENSORS #1-5 (must be in alphabetical order)
5000 4 Opto 4 Powered Relays Only one sensor of the same type can be selected for any manifold mounting style.
6000 2 Opto 6 Powered Relays N None
7000 8 Dry Relays A Graphite/PP cooling tower contacting conductivity
A000 8 Powered Relays with USA Pigtails Prewired B 316SS/PP cooling tower contacting conductivity
B000 7 Powered Relays with USA Pigtails Prewired, C Cooling tower, electrodeless conductivity
1 Dry Relay
D High pressure conductivity
C000 4 Powered Relays with USA Pigtails Prewired,
E Makeup conductivity
4 Dry Relays
F Flat pH
D000 4 Powered Relays with USA Pigtails Prewired,
4 Opto Relays with 20ft Pulse Cables G High pressure pH
6 Powered Relays with USA Pigtails Prewired, H Rod ORP
E000
2 Opto Relays with 20ft Pulse Cables I Flat ORP
F000 4 Dry Relays, 4 Opto Relays with 20 ft Pulse Cables J High pressure ORP
G000 6 Dry Relays, 2 Opto Relays with 20 ft Pulse Cables K Chlorine**
L ClO2**
POWER CORD M Little Dipper**
B Brazil Power Cord, 15 Amp O One Corrosion Sensor (electrodes purchased separately)**
D DIN Power Cord, 15 Amp P Pyxis PTSA**
H Hardwired - No Power Cord R Two Corrosion Sensors (electrodes purchased separately)**
P USA Power Cord, 15 Amp S Disinfection, No Sensor
T Pyxis Polymer**
I/O MODULES #1-4 (MUST BE IN ALPHABETICAL ORDER)
U Pyxis PTSA+Polymer**
N No Input Output Module A External Preamp
A Dual Sensor Inputs B Flat pH with ATC
B Dual Analog Inputs C Disinfection, no sensor
C Four Analog Inputs D PEEK electrodeless
D Six Analog Inputs E CPVC electrodeless
E Dual Analog Inputs + Four Analog Outputs F CCond, K=1.0, 100psi
F Dual Analog Outputs G CCond, K=0.1, 100psi
G Four Analog Outputs H CCond, K=10, 100psi
H Dual Corrosion Inputs I CCond, K=0.01, 100psi
WiFi J CCond, K=1.0, 200psi
N None K CCond, K=0.1, 200psi
W Single Connection, WiFi only L CCond, K=10, 200psi
D Dual Connection, Ethernet and WiFi M CCond, K=0.01, 200psi
COMMUNICATIONS PROTOCOL SENSORS #1-6 (must be in alphabetical order)
* If a high pressure manifold is selected, only Hi P sensors and Makeup available.
N None ** Dipper, Pyxis, Chlorine, ClO2, Corrosion sensors NOT available with
M Modbus TCP and BACnet Submersion mounting
N None
AUXILIARY POWER
A Boiler sensor with ATC, 250 psi, K=1.0, 20ft.cable
N No Auxiliary Power
B Boiler sensor no ATC, 250 psi, K=1.0, 20ft.cable
L 12 VDC Auxiliary Power Board
C Condensate sensor with ATC, 200 psi, K=0.1, 10ft.cable
H 24 VDC Auxiliary Power Board
D Boiler sensor with ATC, 250 psi, K=10, 20ft.cable
MODEL CODES FOR FIELD CONFIGURABLE RELAYS
W CT9 8 CGH P AADE W M H S ANNNN
Label Base Relay Board Relay Board/Pigtails #1-3 Power Cord I/O Module#1-4 WiFi Protocol -
Auxiliary Power Sensor Mounting Sensor Option

W IN9 8 CGH P AADE W M H S ANNNN

Label Base Relay Board Relay Board/Pigtails #1-3 Power Cord I/O Module#1-4 WiFi Protocol Auxiliary Power - Sensor Mounting Sensor Option

W BL9 8 CGH P AADE W M H ANNNNN

Label Base Relay Board Relay Board/Pigtails #1-3 Power Cord I/O Module#1-4 WiFi Protocol Auxiliary Power - Sensor Option

LABEL SENSOR MOUNTING

W Walchem N None
BASE S Submersion
I Inline
CT9 Cooling Tower
L Loose flow switch manifold
BL9 Boiler P Flow switch manifold on panel
IN9 pH, Disinfection, Conductivity F Loose high pressure flow switch manifold
H High Pressure flow switch manifold on panel*
FIELD CONFIGURABLE RELAYS S Submersion
Relay Board I Inline
8 Flexible relay board with 3 relay slots, 15 Amp L Loose flow switch manifold
9 Flexible relay board with 3 relay slots, 20 Amp P Flow switch manifold on panel
Relay Module/Pigtail Options #1-#3 (must be in alphabetical order)
Example, CGH for three modules: a 4-opto, a 3-Form C, and a 4-Powered with USA pigtails
SENSORS #1-5 (must be in alphabetical order)
A 4 Powered Relays Only one sensor of the same type can be selected for any manifold mounting style.
B 4 Dry Relays N None
C 4 Opto Relays A Graphite/PP cooling tower contacting conductivity
D 2 Powered and 2 Dry Relays B 316SS/PP cooling tower contacting conductivity
E 2 Powered and 2 Opto Relays C Cooling tower, electrodeless conductivity
F 2 Dry and 2 Opto Relays D High pressure conductivity
G 3 Form C Dry Relays E Makeup conductivity
H 4 Powered Relays with USA Pigtails Prewired F Flat pH
I 2 Powered Relays with USA Pigtails Prewired G High pressure pH
and 2 Dry Relays H Rod ORP
J 2 Powered Relays with USA Pigtails Prewired I Flat ORP
and 2 Opto Relays with 20ft Pulse Cables
J High pressure ORP
K 4 Opto Relay with 20ft Pulse Cables
K Chlorine**
L 2 Dry Relays, 2 Opto Relays with 20ft Pulse Cables
L ClO2**
N No Relay Module
M Little Dipper**
POWER CORD O One Corrosion Sensor (electrodes purchased separately)**
B Brazil Power Cord, 15 Amp, Not Avail. for Relay Board 9 P Pyxis PTSA**
D DIN Power Cord, 15 Amp, Not Avail. for Relay Board 9 R Two Corrosion Sensors (electrodes purchased separately)**
H Hardwired - No Power Cord S Disinfection, No Sensor
P USA Power Cord, 15 Amp, Not Avail. for Relay Boad 9 T Pyxis Polymer**
T USA Power Cord, 20 Amp, ONLY Avail. for Relay Board 9 U Pyxis PTSA+Polymer**
A External Preamp
I/O MODULES #1-4 (MUST BE IN ALPHABETICAL ORDER)
B Flat pH with ATC
N No input output module
C Disinfection, no sensor
A Dual Sensor Inputs
D PEEK electrodeless
B Dual Analog Inputs
E CPVC electrodeless
C Four Analog Inputs
F CCond, K=1.0, 100psi
D Six Analog Inputs
G CCond, K=0.1, 100psi
E Dual Analog Inputs + Four Analog Outputs
H CCond, K=10, 100psi
F Dual Analog Outputs
I CCond, K=0.01, 100psi
G Four Analog Outputs
J CCond, K=1.0, 200psi
H Dual Corrosion Inputs
K CCond, K=0.1, 200psi
WiFi L CCond, K=10, 200psi
N None M CCond, K=0.01, 200psi
W Single Connection, WiFi only
D Dual Connection, Ethernet and WiFi SENSORS #1-6 (must be in alphabetical order)
* If a high pressure manifold is selected, only Hi P sensors and Makeup available.
COMMUNICATIONS PROTOCOL ** Dipper, Pyxis, Chlorine, ClO2, Corrosion sensors NOT available with Submersion mounting
N None
N None
M Modbus TCP and BACnet
A Boiler sensor with ATC, 250 psi, K=1.0, 20ft.cable
AUXILIARY POWER B Boiler sensor no ATC, 250 psi, K=1.0, 20ft.cable
N No Auxiliary Power C Condensate sensor with ATC, 200 psi, K=0.1, 10ft.cable
L 12 VDC Auxiliary Power Board D Boiler sensor with ATC, 250 psi, K=10, 20ft.cable
H 24 VDC Auxiliary Power Board
 Cloud-based water treatment management software
tool that amplifies the value of Walchem controllers

Key Benefits
• Real-Time Access to Your Process
• Mobile Device Friendly
• Alarm Notification with Escalation
• Data Graphing and Storage
Customer + Facilities Management
• Full management of customers and their facilities to access the
information you need as quickly as possible
• Flag priority customers and facilities for quick access to help plan
your upcoming work week

Process Monitoring + Control

• Anywhere access to customer’s real-time controller data
• Link directly to LiveConnect to make changes on your
controllers remotely

Data Management + Visualizations

• Assess key parameters at-a-glance with customizable dashboard
• Easy-access to alarms organized by priority levels with acknowledgment features
• Bookmark customers, facilities and controllers for a user-customized dashboard experience
• Visualize recent and historical controller data trends on easy-to-read, interactive graphs
• Compare graphs across multiple controller channels
• Access historical data and export your graphs to PDF and CSV file for your reporting needs

Alarms + Custom Notifications

• Manage workflow by notifying workers of triggered alarms
• Customize the escalation process including first party notified
• Notify two unique groups of users
• Manage alarm settings by controller channel
• Set alarm levels to quickly identify the most critical issues
• Alarm email summaries

Team Management
• Create admin, technician, and view-only user roles
• Set custom visibility permissions for users so they only see the customers
they need to access
Sensors + Accessories
High quality accessories for cooling tower, boiler, potable water, and wastewater applications
Carefully designed accessories and selected for compatibility with our pumps and controllers to enable our customers to
provide a complete system solution. Here is just a sampling of the sensors and accessories available from Walchem:

Disinfection Sensors Electrodeless

Amperometric disinfection Conductivity Sensors
sensors offer a cost effective and Electrodeless conductivity sensors
reliable solution to your disinfection may be installed in a variety of very
control requirements. We offer sensors, in varying harsh chemical control applications,
ranges of concentration, for free chlorine/bromine, including oily cleaner baths,
total chlorine, chlorine dioxide, ozone, peracetic acid chromates, rinse tanks, fume scrubbers and other
and hydrogen peroxide. Whether the application is concentrated chemicals up to a conductivity of
cooling tower, food and beverage, drinking water, 1000 mS/cm (range varies with solution temperature).
wastewater or swimming pool, these sensors are
the ideal solution.

Fluorometers Water Meters

The Little Dipper 2 and Pyxis in-line WFM Series water
fluorometers are rugged, 24/7 meters have earned a
sampling devices that provide maximum reputation for design
performance, minimal maintenance and simplicity, wide range
solid state reliability. They can be used of applications and
with data collection systems accuracy in low-quality
to monitor and control the level of water. The WFM Series uses the widely
treatment chemicals for cooling tower and boiler applications. recognized multi-jet principle, which has been
The handheld Little Dipper is a small, lightweight and highly accepted as an international standard for many
durable fluorometer ideal for quick measurements in the field. years. These meters are available with either a
two-wire reed switch, or a solid state, three-wire
Hall effect sensor.
Contacting
Conductivity Sensors
Contacting conductivity sensors are
ideal for use in cooling towers and
boilers, reverse osmosis equipment,
and other non-oily applications.
A variety of cell constants are available
to handle a range of conductivities.

pH/ORP Sensors
Metering Pumps
Cost-effective differential
pH/ORP electrodes for The E-Class is the most innovative and comprehensive
industrial and municipal metering pump product line in the world. Over 50 years
of pump experience and a commitment to superior
applications.
mechanical design has led to development of many
industry firsts, including 360 stroke-per-minute technology,
and the world’s highest capacity solenoid metering pumps.

Accessories
To complete your system, Walchem provides high quality
accessories that are required for cooling tower, boiler,
potable water, and wastewater applications. All of
Walchem’s accessories are carefully designed and
selected for compatibility with our pumps and controllers

to enable our customers to provide a complete system solution.

walchem.com
ISO 9001 registered company

Walchem, Iwaki America Inc. 180901.D October 2022

Five Boynton Road Hopping Brook Park | Holliston, MA 01746 USA | Phone 508-429-1110 | walchem.com