# Controller, Temperature/Process, Strain, 1/16 DIN, B/C/E/J/K/L/N/R/S/T/RTD, 0 to 55 °C, CNi Series

![Product image](https://novapart.co/image/farnell:3906823/)

**URL**: https://novapart.co/products/CNI1644-C24-DC(EF03)/controller-temperature-process-strain-1-16-din-b-c
**SKU**: CNI1644-C24-DC(EF03)
**Manufacturer**: OMEGA
**Category**: Automation & Process Control || Temperature Controllers
**Price**: €578.9700
**Stock**: 10+
**Lead Time**: 113 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Product Range | CNi Series |
| Thermocouple Type | B, C, E, J, K, L, N, R, S, T, RTD |
| Output Voltage Max | 10VDC |
| Output Voltage Min | - |
| Temperature Accuracy ± | 0.5°C |
| Operating Temperature Max | 55°C |
| Operating Temperature Min | 0°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3906823/)

## **1 ⁄16 DIN Temperature, Process and Strain PID Controllers** 

**==> picture [116 x 49] intentionally omitted <==**

**----- Start of picture text -----**<br>
CNi16 Series<br>FM<br>APPROVED<br>For Temp. Units<br>C € cL) us<br>**----- End of picture text -----**<br>


- U **Universal Inputs** 

- U **High Accuracy: 0.5°C (±0.9°F), 0.03% Reading** 

- U **Totally Programmable Color Displays (Visual Alarms)** 

- U **User-Friendly, Simple to Configure** 

**CNi1633 shown larger than actual size.** 

**CNi16D33 shown larger than actual size.** 

- U **Free Software Download** 

- U **Full Autotune PID Control** 

- U **Embedded Ethernet Connectivity Optional** 

- U **RS232 and RS485 Serial Communications Optional** 

- U **Built-In Excitation** 

- U **2 Control or Alarm Outputs Optional: DC Pulse, Solid State Relays, Mechanical Relays, Analog Voltage and Current** 

- U **Output 3: Isolated Analog Voltage and Current Optional** 

- U **NEMA 4 (IP65) Front Bezel** 

The OMEGA[®] CNi16 is the popular 1 2 ⁄16 DIN size (48 mm ) controller. It is available with a single (model CNi16) or dual display (model CNi16D) that displays a setpoint along with the process value. The CNi16 display can be programmed to change color between **GREEN, AMBER,** and **RED** at any setpoint or alarm point. The CNi16 is the first[1] ⁄16 DIN controller with the option of both RS232 and RS485 in 1 instrument with straightforward OMEGA[®] ASCII protocol. And of 

course the CNi16 is the first[1] ⁄16 DIN controller that can connect directly to an Ethernet network and features an embedded Web server. OMEGA[®] provides free configuration and data acquisition software downloaded off of the Web. 

The CNi16 enclosure has a NEMA 4 (IP65) rated front bezel. The electronics are removable from the front panel. 

**Access Vital information Anytime, Anywhere, On the Internet!** 

- U **Temperature Stability: ±0.04°C/°C RTD and ±0.05°C/°C Thermocouple @ 25°C (77°F)** 

- U **Front Removable and Plug Connectors** 

- U **AC or DC Powered Units** 

- U **Ratiometric Mode for Strain Gages** 

- U **Programmable Digital Filter** 

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1 ⁄ 16 DIN controller with<br>embedded Web server, dual<br>control outputs, dual display.<br>**----- End of picture text -----**<br>


**P-17** 

**P** 

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20.3 (0.80)<br>105.7 (4.18) MAX<br>TOP VIEW<br>Dimensions:<br>mm (inch)<br>45.00 +0.61/-0.00<br>45.00 +0.61/-0.00  (1.772 +.024/-.000)<br>(1.772 +.024/-.000)<br>Panel Thickness<br>6.4 max (0.25)<br>0.6 min (0.03)<br>R1.52 (0.060)<br>4 PLCS Panel Cutout:<br>1/16 DIN<br>**----- End of picture text -----**<br>


## **Options** 

|**Ordering Suffix**|**Description**|
|---|---|
|**-AL**|Limit alarm version (alarms only,<br>no PID control)***2*3*7**|
|**-SM**|Simplifed menu (on/off control or<br>alarms, no PID)***5**|
|**Network Option**|**s**|
|**-EIT**|Ethernet with embedded Web<br>server***1*6**|
|**-C24**|Isolated RS232 and RS485/422,<br>300 to 19.2 Kb***2**|
|**-C4EIT**|Ethernet with embedded Web server<br>+ isolated RS485/422 hubfor up to<br>31 devices***1*2*6**|
|**Power Supply**||
|**-DC**|12 to 36 Vdc, 24 Vac***2*4**|
|**Factory Setup**||
|**-FS**|Factorysetupand confguration|
|**-FS(RTD-1N)**|Customized CNiS model for<br>MIL-T-7990B nickel RTD input,<br>0 to 200°C(32 to 392°F)|
|**-FS(RTD-2N)**|Customized CNiS model for<br>MIL-T-7990B nickel RTD input,<br>-40 to 300°C (-40 to 572°F)|
|**Software (Requi**|**res Network Option)**|
|**OPC-SERVER**<br> **LICENSE**|OPC server/driver software license|



- _[1  ] Ethernet options are available for the CNi16D and CNiS16D controllers only._ 

- _[2 ]_ _**“-DC”, “-C24”,** and_ _**“-C4EIT”** not available with excitation._ 

- _[3] Analog output (option 5) is not available with_ _**“-AL”** units or CNi16A models._ 

- _[4] 20 to 36 Vdc for CNi16D, CNi16D-C4EIT, CNi16D-EIT and CNi16A._ 

- _[5]_ _**“-SM”** option not available on CNiS16 or CNi16A models._ 

- _[6] Ethernet options are not available for CNi16A models._ 

- _[7] For CNi16A0x-AL: one alarm and one analog retransmission._ 

|**To Order**<br>**Model No**<br>**Output 1**<br>**Output 2**|**To Order**<br>**Model No**<br>**Output 1**<br>**Output 2**|**To Order**<br>**Model No**<br>**Output 1**<br>**Output 2**|
|---|---|---|
|**.**<br>**Single Display**|<br>**with 2 Control O**|<br>**utputs**|
|**CNi1633**<br>|Relay<br>|Relay<br>|
|**CNi1644**|DCpulse|DCpulse|
|**CNi1643**|DCpulse|Relay|
|**CNi1642**|DCpulse|0.5 A SSR|
|**CNi1622**<br>**CNi1623**|0.5 A SSR<br>05 A SSR|0.5 A SSR<br>Rl|
|<br>**CNi1624**|.<br>0.5 A SSR|eay<br>DCpulse|
|**CNi1653**|Analog|Relay|
|**CNi1654**|Analog|DCpulse|
|**CNi1652**|Analog|0.5 A SSR|
|**Dual Display w**|**ith 2 Control Out**|**puts**|
|**CNi16D33**|Relay|Relay|
|**CNi16D44**|DCpulse|DCpulse|
|**CNi16D43**|DCpulse|Relay|
|**CNi16D42**|DCpulse|0.5 A SSR|
|**CNi16D22**|0.5 A SSR|0.5 A SSR|
|**CNi16D23**|0.5 A SSR|Relay|
|**CNi16D24**|0.5 A SSR|DCpulse|
|**CNi16D53**|Analog|Relay|
|**CNi16D54**|Analog|DCpulse|
|**CNi16D52**|Analog|0.5 A SSR|
|**Single Display**<br>**with 2 Control**|**Strain/Process In**<br>**Outputs**|**put**|
|**CNiS1633**|Relay|Relay|
|**CNiS1644**|DCpulse|DCpulse|
|**CNiS1643**|DCpulse|Relay|
|**CNiS1642**|DCpulse|0.5 A SSR|
|**CNiS1622**|0.5 A SSR|0.5 A SSR|
|**CNiS1623**|0.5 A SSR|Relay|
|**CNiS1624**|0.5 A SSR|DCpulse|
|**CNiS1653**|Analog|Relay|
|**CNiS1654**|Analog|DCpulse|
|**CNiS1652**|Analog|0.5 A SSR|
|**Single Display**<br>**Isolated Analog**|**with 2 Control O**<br>**Output**|**utputs and**|
|**CNi16A33**|Relay|Relay|
|**CNi16A24**|0.5 A SSR|DCpulse|
|**CNi16A42**|DCpulse|0.5 A SSR|
|**CNi16A43**|DC pulse|Relay|
|**Dual Display St**<br>**with 2 Control**|**rain/Process Inp**<br>**Outputs**|**ut**|
|**CNiS16D33**|Relay|Relay|
|**CNiS16D44**|DCpulse|DCpulse|
|**CNiS16D43**|DCpulse|Relay|
|**CNiS16D42**|DCpulse|0.5 A SSR|
|**CNiS16D22**|0.5 A SSR|0.5 A SSR|
|**CNiS16D23**|0.5 A SSR|Relay|
|**CNiS16D24**|0.5 A SSR|DCpulse|
|<br>**CNiS16D53**|<br>Analog|<br>Relay|
|**CNiS16D54**|Analog|DCpulse|
|**CNiS16D52**|Analog|0.5 A SSR|



_Comes complete with operator’s manual._ 

_**Ordering Examples: CNi1633,** temperature/process controller, output 1 relay, output 2 relay single display, 90 to 240 Vac power._ _**CNiS1643,** strain/process controller, output 1 DC pulse, output 2 relay, single display, 90 to 240 Vac power._ 

**P-18** 

**P** 

## **[(][All][i/8, i/16, i/32 DIN)] Common Specifications** 

## **Universal Temperature and Process Input (DPi/CNi Models) Accuracy:** ±0.5°C temp; 0.03% rdg **Resolution:** 1°/0.1°; 10 µV process **Temperature Stability:** 

**RTD:** 0.04°C/°C 

**TC @ 25°C (77°F):** 0.05°C/°C **Cold Junction Compensation Process:** 50 ppm/°C **NMRR:** 60 dB 

**CMRR:** 120 dB 

**A/D Conversion:** Dual slope **Reading Rate:** 3 samples/s **Digital Filter:** Programmable **Display:** 4-digit 9-segment LED 10.2 mm (0.40"); i32, i16, i16D, i8DV 21 mm (0.83"); i8 10.2 mm (0.40") and 21 mm (0.83"); i8DH **RED** , **GREEN,** and **AMBER** programmable colors for process variable, setpoint and temperature units 

**Input Types:** Thermocouple, RTD, analog voltage, analog current 

## **Thermocouple Lead Resistance:** 

100 Ω max 

**Thermocouple Types (ITS 90):** J, K, T, E, R, S, B, C, N, L (J DIN) **RTD Input (ITS 68):** 100/500/1000 Ω Pt sensor, 2-, 3- or 4-wire; 0.00385 or 0.00392 curve 

**Voltage Input:** 0 to 100 mV, 0 to 1V, 0 to 10 Vdc 

**Input Impedance:** 10 MΩ for 100 mV 1 MΩ for 1 or 10 Vdc 

**Current Input:** 0 to 20 mA (5 Ω load) **Configuration:** Single-ended 

**Polarity:** Unipolar **Step Response:** 0.7 sec for 99.9% **Decimal Selection: Temperature:** None, 0.1 **Process:** None, 0.1, 0.01 or 0.001 

**Setpoint Adjustment:** -1999 to 9999 counts 

**Span Adjustment:** 0.001 to 9999 counts 

**Offset Adjustment:** -1999 to 9999 

**Excitation (Not Included with Communication):** 24 Vdc @ 25 mA (not available for low-power option) 

## **Universal Strain and Process Input (DPiS/CNiS Models)** 

**Accuracy:** 0.03% reading **Resolution:** 10/1µV 

**Temperature Stability:** 50 ppm/°C **NMRR:** 60 dB **CMRR:** 120 dB 

**A/D Conversion:** Dual slope **Reading Rate:** 3 samples/s **Digital Filter:** Programmable **Input Types:** Analog voltage and current **Voltage Input:** 0 to 100 mVdc, -100 mVdc to 1 Vdc, 0 to 10 Vdc 

**Input Impedance:** 10 MΩ for 100 mV; 1 MΩ for 1V or 10 Vdc 

**Current Input:** 0 to 20 mA (5 Ω load) **Linearization Points:** Up to 10 **Configuration:** Single-ended 

**Polarity:** Unipolar **Step Response:** 0.7 sec for 99.9% **Decimal Selection:** None, 0.1, 0.01 or 0.001 

**Setpoint Adjustment:** -1999 to 9999 counts 

**Span Adjustment:** 0.001 to 9999 counts **Offset Adjustment:** -1999 to 9999 

**Excitation (Optional In Place Of Communication):** 5 Vdc @ 40 mA; 10 Vdc @ 60 mA 

## **Control** 

**Action:** Reverse (heat) or direct (cool) **Modes:** Time and amplitude proportional control; selectable manual or auto PID, proportional, proportional with integral, proportional with derivative and anti-reset Windup, and on/off 

**Rate:** 0 to 399.9 s **Reset:** 0 to 3999 s **Cycle Time:** 1 to 199 s; set to 0 for on/off **Gain:** 0.5 to 100% of span; setpoints 1 or 2 **Damping:** 0000 to 0008 

**Soak:** 00.00 to 99.59 (HH:MM), or OFF 

**Ramp to Setpoint:** 00.00 to 99.59 (HH:MM), or OFF 

**Auto Tune:** Operator initiated from front panel 

## **Control Output 1 and 2** 

**Relay:** 250 Vac or 30 Vdc @ 3 A (resistive load); configurable for on/off, PID and ramp and soak 

**Output 1:** SPDT, can be configured as alarm 1 output 

**Output 2:** SPDT, can be configured as alarm 2 output **SSR:** 20 to 265 Vac @ 0.05 to 0.5 A (resistive load); continuous 

**DC Pulse:** Non-isolated; 10 Vdc @ 20 mA 

**Analog Output (Output 1 Only):** Non-isolated, proportional 0 to 10 Vdc or 0 to 20 mA; 500 Ω max 

**Output 3 Retransmission:** 

**Isolated Analog Voltage and Current Current:** 10 V max @ 20 mA output **Voltage:** 20 mA max for 0 to 10 V output 

## **Network and Communications** 

**Ethernet:** Standards compliance IEEE 802.3 10 Base-T 

**Supported Protocols:** TCP/IP, ARP, HTTPGET 

**RS232/RS422/RS485:** Selectable from menu; both ASCII and MODBUS protocol selectable from menu; programmable 300 to 19.2 Kb; complete programmable setup capability; program to transmit current display, alarm status, min/max, actual measured input value and status 

**RS485:** Addressable from 0 to 199 **Connection:** Screw terminals 

## **Alarm 1 and 2 (Programmable)** 

**Type:** Same as output 1 and 2 **Operation:** High/low, above/below, band, latch/unlatch, normally open/ normally closed and process/deviation; front panel configurations 

## **Analog Output (Programmable):** 

Non-isolated, retransmission 0 to 10 Vdc or 0 to 20 mA, 500 Ω max (output 1 only); accuracy is ± 1% of FS when following conditions are satisfied: input is not scaled below 1% of input FS, analog output is not scaled below 3% of output FS 

## **General** 

**Power:** 90 to 240 Vac ±10%, 50 to 400 Hz*, 110 to 300 Vdc, equivalent voltage **Low Voltage Power Option:** 24 Vac**, 12 to 36 Vdc for DPi/CNi/DPiS/CNiS; 20 to 36 Vdc for dual display, ethernet and isolated analog output from qualified safety approved source 

## **Isolation** 

**Power to Input/Output:** 2300 Vac per 1 minute test 

**For Low Voltage Power Option:** 1500 Vac per 1 minute test **Power to Relay/SSR Output:** 2300 Vac per 1 minute test 

**Relay/SSR to Relay/SSR Output:** 2300 Vac per 1 minute test **RS232/485 to Input/Output:** 500 Vac per 1 minute test **Environmental Conditions:** 

**All Models:** 0 to 55°C (32 to 131°F) 90% RH non-condensing 

**Dual Display Models:** 0 to 50°C (32 to 122°F), 90% RH non-condensing (for UL only) **Protection:** 

**DPi/CNi/DPiS/CNiS32,16,16D, 8C:** NEMA 4X/Type 4 (IP65) front bezel **DPi/CNi/DPiS/CNiS8, 8DH, 8DV:** NEMA 1/Type 1 front bezel **Approvals:** UL, C-UL, CE per 2014/35/EU, FM (temperature 

units only) 

## **Dimensions** 

- **i/8 Series:** 48 H x 96 W x 127 mm D 

- (1.89 x 3.78 x 5") 

**i/16 Series:** 48 H x 48 W x 127 mm D 

(1.89 x 1.89 x 5") 

**i/32 Series:** 25.4 H x 48 W x 127 mm D 

(1.0 x 1.89 x 5") 

## **Panel Cutout** 

- **i/8 Series:** 45 H x 92 mm W (1.772 x 3.622"),[1] ⁄8 DIN **i/16 Series:** 45 mm (1.772") square, 

1⁄16 DIN 

**i/32 Series:** 22.5 H x 45 mm W 

- (0.886 x 1.772"),[1] ⁄32 DIN 

## **Weight** 

- **i/8 Series:** 295 g (0.65 lb) **i/16 Series:** 159 g (0.35 lb) **i/32 Series:** 127 g (0.28 lb) 

_* No CE compliance above 60 Hz._ 

_** Units can be powered safely with 24 Vac power, but no certification for CE/UL are claimed._ 

**P-19** 



## Links

- [View this product on Novapart](https://novapart.co/products/CNI1644-C24-DC(EF03)/controller-temperature-process-strain-1-16-din-b-c)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/omega/cni1644-c24-dc-ef03/temperature-process-controller/dp/3906823)
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