The 1756-CJC ControlLogix Thermocouple Sensor Kit by Allen-Bradley is a Cold Junction Compensation Thermistor with 2 jumpers and it is used with the 1756-IRT8I or the 1756-IT16 module. The cold compensation thermistor is a temperature-dependent resistor used when temperature correction is required in Thermocouple Analog input modules.
The Allen-Bradley 1756-CJC is a ControlLogix Cold Junction Compensation Kit.
The 1756-CJC provides the user with sensors that are compatible with the 1756-IRT88I and the 1756-IT16 Analog Modules. This 1756-CJC accessory is primarily used when these modules are in thermocouple mode because the modules lack the necessary CJC sensor on their own. The 1756-CJC is used for temperature correction and improves the overall accuracy of thermocouple reading. The ControlLogix 1765-CJC Cold Junction Compensation Kit is required if the channel wiring for the module is connected via an RTB.
One Cold Junction Compensation Kit contains two jumpers and is attached to the module’s screw terminals. The ambient operating temperature must be between 0 and 60 degrees Celsius.
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| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number/Catalog No. | 1756-CJC |
| Series | ControlLogix |
| Sensor Type | Cold Junction Compensation |
| Operation Mode | Totalizer Fill and Prover |
| Backplane Current (5Volts) | 300 milliamps |
| Backplane Current (24Volts) | 6 milliamps |
| Power Dissipation (Max) | 6 Watts at 60 Celsius |
| Removeable Terminal Blocks | 1756-TBNH, 1756-TBSH |
| Enclosure | Open |
| Backplane Current (5 Volts DC) | 10 amps |
| Backplane Current (24 Volts DC) | 2.8 Amps |