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i-Series Program. Strain/Process Controllers & Meters with Comm.

1/32 DIN Models iS32, Strain and Process Meters and Controllers


Item# CNIS843

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $562.48
10-24 $534.36
25-49 $506.23
50-99 $478.11
100-499 $449.98
500+ $421.86

In stock

Lead Time (If not in stock): 6 weeks
1/32 DIN Models iS32, Strain and Process Meters and Controllers CNIS843 CNIS843
  • High Quality
  • FREE 5-Year Warranty
  • High Accuracy 0.03% Rdg
  • User Friendly, Simple to Configure

CNIS843 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Retransmission/Analog Output
Communications Protocol
Form Factor
Number of Relays
Supply Voltage
Display Digit Height
Thermocouple Type
Specifications Input Type
RTD Types Supported
Number of Inputs
Display Color
Number of Display Digits
Display Type
Excitation Levels
Input Range

The "iS" series of meter/controllers can measure a wide variety of strain gage bridge and DC voltage intputs for all common load cells, pressure transducers, and most any strain gauge type of transducer. It is the first instrument of its kind, offering a wealth of powerful features and performance in an amazingly compact 1/32 DIN package or a 1/8 DIN package with 0.83" (21mm) high digits. The iS series handles input ranges of 0-100 mV, -100 mVdc to 1 Vdc, 0-10 V and 0-20mA. The iS series is easy to configure and scale to virtually any engineering units using the push buttons on the front panel, or using personal computer with the optional serial communications and free configuration software. The serial communications option includes both RS-232 and RS-485 on one instrument, and the straightforward OMEGA ASCII communications protocol, as well as MODBUS protocol. The iS series includes built-in excitation for transducers, selectable as 10 V at 100 mA or 5 V at 60 mA. The CNiS series controllers feature a choice of two optional outputs: Form C SPDT (single pole double throw) mechanical relays, solid state relays, DC pulse, and programmable analog output selectable for either a control function or retransmission of the process value. The iS series features the iSeries totally programmable color display that can change colors between Green, Amber, and Red at any setpoint or alarm point.

Input Ranges: 0-100 mV, -100 mVdc to 1 Vdc, 0-10 V, 0-20 mA
Isolation: 354 V peak per IEC spacing
NMR: 60 dB
CMR: 120 dB
Input Impedance: 10 MOhms for 100 mV input 1 MOhm for 1 or 10 V input 5 Ohms for 20 mA current input
Display: 4 digits, 9 segments tri-color LED
Digit Height: iS32;10.2 mm (.4")
iS8; 21 mm (0.83")
Analog-to-Digital technique: Dual slope
Internal A/D Resolution: 15 bits
Read rate: 3 / sec
Polarity: Automatic
Max Error Strain/Process: ±0.03% rdg.
Span tempco.: ± 50 ppm / C
Step response: 1-2 sec.
Warmup to rated accuracy: 30 min.
Analog Output (optional): 0-10 V, 4-20 mA, can be used as Retransmission or PID Control.
Excitation Voltage: 10 V @ 100 mA, 5 V @ 60 mA
Power: 90-240 Vac 50-400 Hz or 90-375 Vdc, 4 W (optional) 24 Vac 50-400 Hz or 12-36 Vdc, 5 W
Dimensions:iS32: 25.4 H x 48 W x 127 D mm (1.0 x 1.89 x 5.0")
iS8: 48 H x 96 W x 127 D mm (1.89 x 3.78 x 5.0")
Weight:iS32; 127 g (0.28lb)
iS8; 295 g (0.65lb)
Approvals: CE per EN50081-1, EN50082-2, EN61010-1

For full product specifications view pdf file in "Related Links" below

Examples of pricing for popular models is referenced in the "To Order" box. Use the "Part Number Builder" below to get pricing for all available models.
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If we connect 4 load cell on the controller, can we set the analog output as an average of the 4 input?

Asked by: ML Tech
The i-Series displays will only accept a single input signal. The only way they will accept 4 load cells is if you wire the 4 cells together in parallel. You typically would use a summing box. The summing box output would then be an average of the 4 load cell outputs. The analog output can then be scaled to the displayed value on the controller. The built in sensor excitation on the controller does not have enough current capability to power 4 load cells. You will have to provide external excitation to power the load cells
Answered by: JK Applications Engineer
Date published: 2024-01-19

What is the modbus protocol used on this product? (TCP/IP, RTU, ASCII)

Asked by: LM1234
If the comm hardware option in the controller is ethernet, then it’s TCP. If the comm option is serial, then it’s RTU. Regardless, we don’t recommend using the old iSeries family with Modbus as it is very limited in functionality, & does not use industry standard Modbus...
Answered by: Applicatrions Engineer JK
Date published: 2023-07-06

Is there an update to the iSeries software tool that runs on Windows 10 (ex. iSerCom)

Asked by: hehner
Hi Hehner, Thank you for the inquiry. We do not have any updates to software for the iSeries. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2022-01-26
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