Allen-Bradley 1756-CJC /A Thermocouple Reference Thermistor
Manufacturer: Allen Bradley
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Part Number: 1756-CJC/A
Condition：New with Original Package
Product Type: CJC Thermistor Kit
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1756-CJC /A ControlLogix Cold Junction Compensation Thermistors
Product Overview
The Allen-Bradley 1756-CJC /A is a high-precision Cold Junction Compensation (CJC) thermistor kit specifically designed for the ControlLogix® platform. This component is an essential requirement for thermocouple input modules, as it provides the critical ambient temperature reference needed to calculate absolute temperature readings.
When thermocouples are connected to a terminal block, a "cold junction" is created where the thermocouple wires meet the copper terminals. The 1756-CJC /A thermistors measure the exact temperature at this junction, allowing the PLC module to subtract the parasitic voltage generated at the connection point. This ensures that the temperature data reported by the controller is accurate and unaffected by fluctuations in cabinet or ambient temperatures.
Technical Specifications
Hardware parameters and compatibility for the 1756-CJC /A:
| Parameter | Specification Details |
| Model Number | 1756-CJC /A |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Component Type | Cold Junction Compensation (CJC) Thermistor |
| Compatibility | 1756-IRT8I, 1756-IT16, 1756-IT6I, 1756-IT6I2 |
| Quantity | Sold as a pair (Kit includes 2 Thermistors) |
| Accuracy | ±0.3 °C to ±1.0 °C (typical compensation) |
| Installation | Direct mount to Removable Terminal Block (RTB) |
| Mounting Position | Specific terminals on 1756-TBNH or 1756-TBSH |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |
| Storage Temperature | -40 °C to +85 °C (-40 °F to +185 °F) |
| Net Weight | 0.0045 kg (0.01 lbs) |