BULLETIN NO.

IMP-E
DRAWING NO. LP0181
REVISED 3/97

RED LION CONTROLS

INTERNATIONAL HEADQUARTERS EUROPEAN HEADQUARTERS
20 Willow Springs Circle, York, Pa. 17402, (717) 767-6511 FAX: (717) 764-0839 892 Plymouth Road, Slough, Berkshire SL1 4LP
Web site- http://www.redlion-controls.com E-mail- sales@redlion-controls.com ENGLAND +44 1753 696888 FAX: +44 1753 696339

MODEL IMP - APOLLO 4½-DIGIT DC INTELLIGENT METER FOR PROCESS INPUTS

l 40,000 COUNT MEASUREMENT RESOLUTION (Can be scaled to
±99,999 display)
l ACCEPTS STANDARD PROCESS SIGNAL CURRENTS (4 to 20 &
10 to 50 mA DC; Automatic Ranging)
l EASY, ONE-PASS SCALING
l STATE-OF-THE-ART DIGITAL ELECTRONICS FOR GREATER
ACCURACY AND RELIABILITY
l FULL 6-DIGIT, HIGH VISIBILITY, 0.56” (14.2 mm) HIGH RED LED
DISPLAY
l PROGRAMMABLE FRONT PANEL LOCK-OUT MENU
l TRANSDUCER EXCITATION SUPPLY (Optional)
l INTEGRATOR (Totalizer) AND LINEARIZER (Optional)
l PEAK/VALLEY MEMORY AND TARE (Re-zero) FUNCTION
(Optional) l 4 to 20 mA or 0 to 10 VDC ANALOG OUTPUT (Optional)
l DUAL ALARM RELAY OUTPUTS (Optional) l NEMA 4/IP65 SEALED METAL FRONT BEZEL
l BI-DIRECTIONAL SERIAL COMMUNICATIONS (Optional)

DESCRIPTION than one unit can be connected in the loop with other RLC products which have
The Apollo Intelligent Process Meter accepts standard process signals and serial communications capabilities.
precisely scales them into engineering units. One model covers any current An optional 4 to 20 mA or 0 to 10 VDC re-transmitted analog output can be
range within 0 to 50 mA. A full 6-digit display accommodates nearly any scaled by the user to interface with a host of recorders, indicators and
engineering units and holds large totalization values. State-of-the-art digital controllers. The indicator has several built-in diagnostic functions to alert
circuitry virtually eliminates errors due to drift. A full complement of option operators of any malfunction. Extensive testing of noise interference
packages are available to fulfill many process applications. mechanisms and full burn-in makes the indicator extremely reliable in industrial
The indicator features a choice of two different scaling procedures which environments. The die-cast front bezel meets NEMA 4/IP65 requirements for
greatly simplifies initial set-up. English Style display prompts and front panel washdown applications. Plug-in style terminal blocks simplify installation
buttons aid the operator through set-up and operation. A front panel lock-out wiring and change-outs.
menu protects set-up data and operation modes from unauthorized personnel.
Programmable digital filtering enhances the stability of the reading. SAFETY SUMMARY
Programmable remote input “E1-CON” pin can be utilized to control a variety All safety related regulations, local codes and instructions that appear in the
of functions, such as totalizing, alarm control, display hold or tare operations. manual or on equipment must be observed to ensure personal safety and to
All set-up data is stored in E2PROM, which will hold data for a minimum of 10 prevent damage to either the instrument or equipment connected to it. If
years without power. equipment is used in a manner not specified by the manufacturer, the protection
An optional integrator (totalizer)/linearizer can be used to totalize or provided by the equipment may be impaired.
integrate signals up to a maximum display value of 999,999. It features Do not use this unit to directly command motors, valves, or other actuators
independent scaling and a low signal cut-out to suit a variety of signal not equipped with safeguards. To do so, can be potentially harmful to persons
integration applications. Programmable remote input “E2-CON” pin is or equipment in the event of a fault to the unit.
included with this option, and can control a variety of functions, such as
totalizing, alarm control, display hold or tare operations, simultaneously with SPECIFICATIONS
“E1-CON” pin. Additionally, nine slopes and offsets can easily be programmed 1. DISPLAY: 6-digit, 0.56” (14.2 mm) High LED, minus sign displayed for
with this option to linearize transducers with non-linear outputs, such as square negative values. “Flashing” display for totalizer overflow. “......” displayed
law devices. Peak/valley (max/min) reading memory, display hold and a signal for input display out of range. “OLOLOL” displayed for input display
re-zeroing (tare) function are included with this option and they are easily overload and “ULULUL” for underload (negative overload).
recalled and controlled by either the front panel or a remote input. All readings 2. POWER REQUIREMENTS:
are retained at power-down. A.C. Power: Switch Selectable 115/230 VAC, ±10%, 50/60 Hz, 14 VA
Optional dual relays with parallel solid state outputs are fully programmable D.C. Power: 10 to 30 VDC, 9 watts max., isolated to 300 Vp.
to operate in a wide variety of modes to suit many control or alarm applications. 3. CONTROLS: Three front panel push buttons for modifying alarm values
Optional 20 mA loop, bi-directional serial communications provides and indicator set-up. Two external inputs for disabling the front panel and
computer and printer interfacing to extend the capabilities of the indicator. More controlling programmable functions.

DIMENSIONS “In inches (mm)” Note: Recommended minimum clearance (behind the panel) for
mounting clip installation is 2.1” (53.3) H x 5.5” (140) W.

PANEL CUT-OUT

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SPECIFICATIONS (Cont’d) specification, and the 4 to 20 mA analog output option can vary as
4. SIGNAL INPUT RANGE: 0 to 50 mA DC (4 to 20 mA, 10 to 50 mA) much as 16% from the stated accuracy specification.
5. INPUT IMPEDANCE: 10 W, 0.2 VDC @ 20 mA 2. One ferrite suppression core (Steward #28-B2025-0A0) placed on the 20
Max. Input Current: 200 mA DC (continuous) mA serial communications cable at the unit for EMI frequencies above 40
6. ACCURACY AND RESOLUTION: MHz.
Resolution: 1/40,000 3. Metal bezel of unit connected with ground lead from rear bezel screw to
Accuracy: ±(0.02% of full scale + 1 digit) metal mounting panel.
7. PROGRAMMABLE DISPLAY READING RANGE: -99999 to +999999 Refer to the EMC Compliance Installation section of the manual for
8. READING RATE: 2.5 readings/second additional information.
9. RESPONSE TIME: 2 seconds to settle for step input (increases with 21. CONSTRUCTION: Die-cast metal front bezel that meets NEMA 4/IP65
programmable digital filtering) requirements for indoor use when properly installed. Installation Category II,
10. NORMAL MODE REJECTION: 40 dB at 50/60 Hz (may be improved by Pollution Degree 2. Case body is black, high impact plastic (panel gasket and
programmable digital filtering) mounting clips included).
11. COMMON MODE REJECTION: 120 dB, DC to 50/60 Hz 22. CONNECTION: Removable terminal blocks
12. TOTALIZER/LINEARIZER: Front panel button for input/total display 23. WEIGHT: 1.2 lbs (0.54 Kg)
select. External totalizer reset/enable. Programmable time-base, scale factor
(0.001-100.000) and low-end cut-out. 9-segment multiple slope scaling for EXCITATION OPTION
non-linear inputs. Response Time = 0.2 sec max. The excitation option provides a regulated excitation voltage (18 VDC, 60
13. E1-CON & E2-CON: External remote inputs that allow activation of mA) that can be used to power the transducer.
various functions (reset total, peak indicator mode, alarm control, etc.)
VIL = 0.8 VMAX; VIH = 2.0 VMIN; Response Time = 0.2 sec max.
14. ENVIRONMENTAL CONDITIONS:
TOTALIZER/LINEARIZER/PEAK/VALLEY/TARE/
Operating Temperature Range: 0o to 50oC E2-CON OPTION
Storage Temperature Range: -40o to 80oC The major feature of this option is its integrator/totalizer (accumulator). The
Span Temperature Coeff.: 100 ppm/oC max; 40 ppm/oC typ. integrator simply totals (adds) input readings along with a programmable time
Zero Temperature Coeff.: 1 µV/oC base and scaling coefficient. The integrator/totalizer may be reset via a remote
Operating and Storage Humidity: 85% max. relative humidity (non- input (E2-CON), by the front panel or through the serial communications loop.
condensing) from 0 to 50oC. Alarms may be programmed to trigger from totalizer values, for example to
Altitude: Up to 2000 meters. signal total flow thresholds for batching operations. A programmable low signal
15. EXCITATION (Optional): Regulated 18 VDC @ 60 mA max. level disable feature completes the integrator/totalizer features. At loss of power
16. SERIAL COMMUNICATIONS (Optional): to the indicator, the contents of the totalizer are saved.
Type: Bi-directional 20 mA current loop, 20 mA source provided on transmit The linearizer feature is a series of programmable scaling points that are used
loop. (Powers up to 7 units in a loop with internal current source.) to construct linear segments to linearize the input signal. The most common
Baud Rate: programmable 300 to 2400 application would be to interface with square law devices (generally, flow
Maximum address: 99 (Actual number in a single loop is limited by serial transducers). A maximum of nine segments are available and using nine
hardware specifications.) segments for a square law device would reduce linearity errors to 0.35%.
Data Format: 10 bit frame, Odd parity (one start bit, 7 data bit, one odd The other features of this option are peak and valley detection and a re-zero
parity bit, and one stop bit.) (tare) function. The indicator will record the lowest reading (valley) and the
Serial Hardware Specifications: highest reading (peak), automatically, for later recall. This information is
SO - Output Transistor Rating: VMAX = 30 VDC, valuable when monitoring the limits of the process over any length of time
VSAT = 1 VMAX at 20 mA. which can span over shifts, days, etc. (These values are stored at power-down).
Note: This will allow up to 28 units max. in each loop. A remote input (E1-CON or E2-CON pin) can be programmed to reset or
SI - Input Diode Rating: VF = 1.25 VTYP; 1.5 VMAX engage the unit into a peak reading indicator. Additionally, the peak and valley
Note: The compliance voltage rating of the source must be greater than can be viewed and reset from the front panel, if so programmed, and viewed and
the sum of the voltage drops around the loop. (Typically a 30 VDC reset through the serial communication option.
powered source would be capable of operating between 18 and 22 The re-zero (tare) function can also be controlled via a remote input or by the
units in a loop.) front panel. This feature can quickly compensate for small shifts or drifts in the
17. ALARMS (Optional): input signal or can re-zero every operation, such as batching.
Solid State: Two, isolated, sinking open collector NPN transistors acting in
parallel with relays. ISOLATED ALARM OPTION
IMAX: 100 mA. VSAT = 1 V @ 100 mA. VMAX = 30 VDC. The alarm option consists of an additional printed circuit board with 9
Relays: connections. Six of these are for the two Form-C relays and the other three are
Type: Form C (2) for the two open collector transistors, which act in parallel with the relays. The
Max. Rating: 5 Amps @ 120/240 VAC or 28 VDC (resistive load), 1/8 hp two alarms are completely independent with programmable values, hysteresis
@ 120 VAC (inductive load). (deadband), high or low acting, auto or manual reset, triggering from input or
Relay Life Expectancy: 100,000 cycles at max. rating. (As load level total and they can be made to track each other, if desirable. If the alarms are
decreases, life expectancy increases.) programmed to latch (manual reset), then they can be reset either by the front
18. ANALOG OUTPUT (Optional):
panel or a remote input. The alarms can be made to trigger from either the
4 to 20 mA: Digital scaling and offsetting within a 4 to 20 mA range
integrator/totalizer or the input display, to actuate external alarms, control
Accuracy: 0.1% of full scale
Resolution: 12 bits valves, etc.
Compliance Voltage: 10 VDC (500 W max. loop impedance) Alarm #1 can be programmed to track Alarm #2 by enabling alarm tracking.
0 to 10 VDC: Digital scaling and offsetting within a 0 to 10 VDC range This is useful in alarm set-ups where a pre-warning control activates before a
Accuracy: ±(0.1% of reading +35 mV) second alarm shuts off the process. Changing the shut-off trip value (alarm #2)
Resolution: 12 bits automatically changes the pre-warn value (alarm #1) an equal amount. Alarm
Min. Load Resistance: 10 KW (1 mA max.) and hysteresis values can be modified through the optional serial
19. PEAK/VALLEY/TARE (Optional): communications to provide automatic control.
Peak and Valley recording. Signal re-zero (tare).
20. CERTIFICATIONS AND COMPLIANCES: ISOLATED SERIAL COMMUNICATIONS OPTION
EMC EMISSIONS: The serial communication option is a half-duplex, two-way 20 mA loop that
Meets EN 50081-2: Industrial Environment. can connect to a variety of printers, computers, terminals and controllers to suit
CISPR 11 Radiated and conducted emissions many data-polling or automatic operation applications. The indicator responds
EMC IMMUNITY: to a host of commands, including change alarm value, reset totalizer and
Meets EN 50082-2: Industrial Environment. transmit input signal. Two loops are required for all hook-ups; a transmit (out-
ENV 50140 - Radio-frequency radiated electromagnetic field 1 going data) loop and a receive (in-coming data) loop. Since the indicator
ENV 50141 - Radio-frequency conducted electromagnetic field 2
monitors the receive loop for a busy signal (current interrupted) while
EN 61000-4-2 - Electrostatic discharge (ESD)3
transmitting, the receive loop must be connected even if the indicator is
EN 61000-4-4 - Electrical fast transient/burst (EFT)
Notes: transmitting only, such as to a printer. A built-in 20 mA source is provided in
1. Unit mounted in a metal panel connected to earth ground (protective the transmit loop. Additionally, multiple units and other Red Lion Controls
earth) with rear cover providing at least 10 dB of shielding effectiveness. instruments can be serially addressed, with a maximum address capability of 99
a. When units are mounted in a metal panel without a rear cover, the units. (Note: There are serial hardware limitations which restrict this to a lower
process signal can vary as much as 2% from the stated accuracy number of units per serial loop.)

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 PROGRAMMABLE FUNCTIONS “E1-CON” - Enter function of remote input
Programming of the IMP is divided into modular steps. Each module is a “0” - re-zero input
short sequence of data entries. The front panel buttons “UP” and “DOWN”, “1” - reset total
(shown as “arrows” on the front panel) are used to change the data and set- “2” - reset and gate totalizer
ups, while the “P” button is used to save or enter the data. After pressing “P” “3” - gate totalizer
which gains entry into the programming mode, the programming modules are “4” - display hold
identified by the message “Pro” and a number in the display. “UP” and “5” - reset peak/valley
“DOWN” are used to select the desired programming module and “P” is “6” - reset peak and start peak indication
used to enter it. All of the subsequent programming steps follow the same “7” - reset valley and start valley indication
procedure. The rear terminal labeled “PGM. DIS.” must be ungrounded to “8” - reset latched alarms
gain access to programming. The following table lists the programming steps. “9” - reset all alarms
“10” - toggle display between input and total
“Pro 0” - RETURN TO MEASUREMENT MODE “11” - re-zero input and totalize the tared values
“12” - display hold with tare
“Pro 1” - SCALE UNIT BY APPLYING SIGNAL “13” - instrument reading synchronization
“dECPNt” - Enter decimal point for scaled display “14” - print request
“round” - Enter rounding factor and trailing zeros for scaled display “E2-CON” - Same function as “E1-CON”
“SCALE” - *
“dSP 1” - Enter display reading for scaling point #1 “Pro 5” - PROGRAM TOTALIZER
“INP 1” - Apply signal level for scaling point #1 “dECPNt” - Enter decimal point for totalization
“dSP 2” - Enter display reading for scaling point #2 “tbASE” - Enter time base
“INP 2” - Apply signal level for scaling point #2 “0” - second
“SEGt” - * “1” - minute
“2” - hour
“Pro 2” - SCALE UNIT BY KEY-IN SIGNAL LEVEL “SCLFAC” - Enter multiplying scale factor
“dECPNt” - Enter decimal point for scaled display “Lo-cut” - Enter low-signal cut out
“round” - Enter rounding factor and trailing zeros for scaled display
“SCALE” - * “Pro 6” - PROGRAM ALARMS
“dSP 1” - Enter display reading for scaling point #1 “trAc” - Enable alarm value tracking
“INP 1” - Enter signal level for scaling point #1 “dISP” - Enable display alarm annunciators
“dSP 2” - Enter display reading for scaling point #2 “LAtC-1” - Enable alarm #1 latching
“INP 2” - Enter signal level for scaling point #2 “ASN-1” - Enter alarm #1 trigger source (input or total)
“SEGt” - * “AL-1” - Enter alarm #1 value
“HYS-1” - Enter hysteresis value for alarm #1
“Pro 3” - PROGRAM FUNCTIONS ACCESSIBLE WITH FRONT “Act-1” - Enter alarm #1 action (high or low)
PANEL LOCKOUT ENGAGED “LAtC-2” - Enable alarm #2 latching
“dSP AL” - Enable display alarms “ASN-2” - Enter alarm #2 trigger source (input or total)
“ENt AL” - Enable enter alarms = “AL-2” - Enter alarm #2 value
“dSPHYS” - Enable display hysteresis “HYS-2” - Enter hysteresis value for alarm #2
“ENtHYS” - Enable enter hysteresis = “Act-2” - Enter alarm #2 action (high or low)
“rSt AL” - Enable reset latched alarms
“dSPbUF” - Enable display of peak/valley readings “Pro 7” - PROGRAM SERIAL COMMUNICATIONS
“rStbUF” - Enable reset of peak/valley readings = “bAud” - Enter baud rate
“SELdSP” - Enable switching display between input and total “AddrES” - Enter loop address number (0-99)
“rSttOt” - Enable reset total “Print” - Enter print function, or “P” command function through
“tArE” - Enable re-zero (tare) of input signal Serial Option
“0” - input
“Pro 4” - PROGRAM DIGITAL FILTERING AND REMOTE INPUT “1” - input, peak/valley, and tare
FUNCTION
“2” - input and alarms
“FILtEr” - Enter level of digital filtering
“3” - input, peak/valley, alarms, hysteresis, and tare
“0” - no digital filtering
“4” - total
“1” - normal filtering
“5” - input, total
“2” - increased filtering
“6” - input, total, peak/valley, and tare
“3” - maximum filtering
“7” - total and alarms
“8” - input, total and alarms
“9” - input, total, peak/valley, alarms
“FULL” - Enable full or abbreviated transmission

“Pro 8” - PROGRAM RE-TRANSMITTED ANALOG OUTPUT

* - Entire sequence for this modular step is not shown (see manual for further “ASIN” - Select source of analog output (input or total)
details). “AN-Lo” - Enter 4 mA or 0 VDC display value
= - This sequence may be subject to being locked-out due to other “AN-HI” - Enter 20 mA or 10 VDC display value
programmed sequences.
“Pro 9” - SERVICE OPERATIONS (Protected by access code)

ISOLATED RE-TRANSMITTED ANALOG OUTPUT OPTION

4 to 20 mA 0 to 10 VDC
The re-transmitted analog output option transmits a digitally programmable The re-transmitted analog output option transmits a digitally programmable
4 to 20 mA current to drive chart recorders, remote indicators and controllers. 0 to 10 VDC output signal to drive chart recorders, remote indicators and
The compliance is 10 VDC. Non-standard current ranges within the 4 to 20 mA controllers. Non-standard current ranges within the 0 to 10 VDC range can be
range can be supported by calculating the slope and intercept of the supported by calculating the slope and intercept of the display/output and
display/output and calculating the required display values at 4 and 20 mA. calculating the required display values to 0 VDC and 10 VDC.

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TOTALIZER EXAMPLE
A milk producer requires that the flow rate of a pump be monitored in 10ths PRESSURE MONITORING EXAMPLE
of gallons per minute. Also, a running total of the number of gallons that has An IMP indicator is installed as a monitoring device for pressure levels
been pumped is needed for accounting/storage purposes. The IMP meets all of within an industrial boiler. A pressure transducer with a range of 0-1500
these needs. A flow sensor with a 4-20 mA output that corresponds to 0 to 175 PSI and a corresponding 4-20 mA output is selected. The maximum
gallons per minute is used. The input is scaled to read in tenths of gallons per allowable pressure of the boiler is 1200 PSI, and at which time a pressure
minute and the totalizer will display gallons. The following programming steps relief valve will operate (this makes the system inherently safe). In
are performed. addition, when the relief valve trips, fuel delivery to the boiler must be
stopped. The relay option of the indicator is employed to turn off the fuel
BASIC SCALING at 1200 PSI. To provide for fail safe operation, operator intervention is
“Pro 2”.........“dECPNt” - 0.0 required to reset the latched relay in order to re-start the boiler. The
“round” - 0.1 indicator’s other output is used to signal operators with a warning bell when
“dSP 1” - 0.0 high pressures exist (1100 PSI), so that they may take action to prevent
“INP 1” - 4.000 boiler shut-down. The alarm/set point values are made to track, so changing
“dSP 2” - 175.0 the cut-off alarm changes the other an equal amount. Additionally, the
“INP 2” - 20.000 indicator is programmed to provide a display alarm in both cases. Key
switches are installed in the panel to lock-out the front panel from operators
TOTALIZER SET-UP and to provide the means to reset the latched relay to re-start the boiler. The
With an average input of 175.0 gallons, the totalizer is to display in gallons linearizer/totalizer option is specified to integrate the average boiler
per minute. The following formula applies: pressure over discrete time periods (i.e. overnight, during peak use, start-
up, etc). Peak pressures are automatically stored with this option.
S.F. = D.T. x T.B. * x D.T.D.P.
P.D. [Time ] I.D.D.P. Programming module #5 (Pro 5) is used to set up the integrator. The re-
transmitted analog output is also specified to drive a chart recorder with 4-
S.F. = Programmable Scale Factor 20 mA for a hard copy of pressure profiles for later evaluation.
D.T. = Desired Total Value For A Fixed Time Duration Scaling of the indicator is done by programming module #1 (Pro 1). For
T.B. = Programmable Time Base dSP 1, 0 PSI is keyed-in. For INP 1, the transmitter is powered and
connected to the indicator and the boiler is at 0 PSI. The indicator then
T.B. = If Program Select Number Chosen Is: Enter In Formula
measures the output from the transmitter. For dSP 2, 1000 PSI is keyed-in.
“0” for sec. = “1”
“1” for min. = “60” Prior to INP 2, the boiler is fired and brought to 1000 PSI as checked by a
“2” for hr. = “3600” reference pressure gage. Once stabilized, the indicator is allowed to
measure the output of the transducer for INP 2. Since there are no span/zero
I.D. = Input Display Value interactions, scaling is complete.
Time= Actual Time Period In Seconds

D.T.D.P. = Desired Total Decimal Point Enter In Formula

0 1
0.0 10
0.00 100
0.000 1000
0.0000 10000

I.D.D.P. = Input Display Decimal Point Enter In Formula

0 1
0.0 10
0.00 100
0.000 1000
0.0000 10000

175 x 60** * x 1
S.F. =
175.0 [
60 10 ]
S.F. = 1 x 1 x 0.1
S.F. = 0.1

“Pro 5”.........“dECPNt” - 0
“tbASE” - 1
“SCLFAC” - 0.100
“Lo-cut” - 0.00
* This value is normally 1, but can be used as a coarse scale factor of 60 or
3600.
** Since the time period is in minutes, the selected T.B. is 60 (program select
value = 1) which equals time base in minutes (60 sec.).

The totalizer will accumulate up to 99999.9 gallons.

ORDERING INFORMATION
TOTALIZER/
PART NUMBERS FOR AVAILABLE
+18 VDC LINEARIZER/ DUAL SERIAL
MODEL NO DESCRIPTION ANALOG SUPPLY VOLTAGES
EXCITATION PEAK/VALLEY ALARMS OUTPUT OUTPUT
TARE/E2CON *10 to 30 VDC 115/230 VAC
NO NO NO NO NO IMP20030 IMP20060
Intelligent YES NO NO NO NO IMP20130 IMP20160
Process YES NO YES NO NO IMP20132 IMP20162
Meter with YES YES NO NO NO IMP23130 IMP23160
IMP 0-50 mA DC YES YES NO YES NO IMP23131 IMP23161
Signal Input YES YES YES NO NO IMP23132 IMP23162
(4-20 mA DC YES YES NO NO 4 to 20 mA IMP23133 IMP23163
10-50 mA DC) YES YES YES YES 4 to 20 mA IMP23137 IMP23167
YES YES YES YES 0 to 10 VDC IMP23139 IMP23169
For more information on Pricing, Enclosures & Panel Mount Kits refer to the RLC Catalog or contact your local RLC distributor.
*Note: The 10 to 30 VDC Versions of the IMP have not yet been specified for EMC.