Allen Bradley 1756‑CJC Cold-Junction Thermistor Sensor Kit

The Allen Bradley 1756‑CJC is a cold-junction compensation kit designed for use with ControlLogix analog thermocouple input modules.

Technical Specifications

• Model: 1756‑CJC
• Function: Cold-junction thermistor sensor kit (two thermistors)
• Compatible Modules: Works with 1756‑IRT8I and 1756‑IT16K/IT16 modules
• Operating Temperature: 0–60 °C
• Mounting: Installs onto analog input module terminals or RTB
• Dimensions: 3.3 × 8.0 × 10.5 cm (~1.3 × 3.1 × 4.1 in)
• Weight: ~16 g
• Backplane Current: ~300 mA @ 5 V DC; ~6 mA @ 24 V DC
• Power Dissipation: ~6 W at 60 °C
• Shock & Vibration: Rated per ControlLogix I/O requirements (30 g shock, 2 g vibration)
• Certifications: UL, CSA, CE, KC, RCM, C-Tick, CCC
• Lifecycle Status: Active

Key Features

• Provides precise cold-junction compensation for thermocouple inputs
• Includes two thermistor sensors—one per module bank
• Compact, low-profile design mounts directly onto modules or removable terminal blocks

Compatible Components & Accessories

• Thermocouple input modules: 1756‑IRT8I, 1756‑IT16K
• ControlLogix 5580 chassis and power supplies
• Compatible with 1756‑TBCH or 1756‑TBS6H removable terminal blocks

Industry Applications

• Accurate temperature measurement in process, batch, food & beverage, and energy systems
• Temperature data logging and regulatory compliance applications

Installation & Maintenance Notes

• Install directly on thermocouple input module or RTB before module use
• Ensure ambient temperature remains within 0–60 °C for accurate compensation
• No periodic maintenance required once installed

Frequently Asked Questions