Allen-Bradley 1756-IRT8I ControlLogix 8-Point Isolated Temperature Sensing Module

Product Overview

The Allen-Bradley 1756-IRT8I provides high-precision temperature and millivolt sensing for ControlLogix platforms. This 100% brand new original module features eight individually isolated points, allowing it to interface with thermocouples and RTDs simultaneously without signal interference. It delivers ultra-high resolution data for critical process control applications that require stable and accurate thermal monitoring in volatile industrial environments.

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation

• Part Number: 1756-IRT8I

• Module Type: Isolated Temperature/mV Input

• Number of Inputs: 8 Points (Individually Isolated)

• Sensing Modes: Thermocouple, RTD, and Millivolt (mV)

• Theoretical Operating Range: -100 to 100 mV

• Actual Range Capability: -101 to 101 mV

• Digital Resolution: 24 bits (Theoretical); 23.98 bits (Actual)

• Required RTB: 36-pin (1756-TBCH or 1756-TBS6H)

• Shipping Weight: 2.0 kg

Engineering Advantages

• Elite Signal Isolation: Individual channel-to-channel isolation eliminates ground loops and prevents electrical noise from propagating between sensors. This architecture ensures that a failure or surge on one probe does not affect the data integrity of the remaining seven channels.

• High-Resolution Precision: The 24-bit analog-to-digital converter tracks minute thermal fluctuations. This precision allows the controller to maintain tighter PID loops, which directly improves product quality in heat-sensitive manufacturing processes.

• Versatile Sensor Integration: A single 1756-IRT8I module handles various sensor types across its 8 ports. Engineers can mix and match thermocouples and millivolt inputs, reducing the total hardware footprint and simplifying the spare parts inventory.

• Streamlined Installation: The module integrates directly into any standard 1756 ControlLogix chassis. Utilizing the 1756-TBCH or 1756-TBS6H removable terminal blocks allows for pre-wiring and rapid module replacement, significantly reducing maintenance-related downtime.

FAQs

• Is this 1756-IRT8I unit a brand new original product?

  Yes, we supply only 100% brand new Allen-Bradley hardware in original factory-sealed packaging to ensure maximum reliability and field life.

• Does the module include the terminal block (RTB)?

  No, the 1756-TBCH (cage clamp) or 1756-TBS6H (spring clamp) must be purchased separately to complete the installation.

• Can I configure individual channels for different ranges?

  The module allows independent configuration for each channel through the Logix Designer software, supporting specific mV or temperature ranges per point.

• How does the 24-bit resolution benefit my process?

  The 24-bit resolution provides finer data granularity, enabling the system to detect sub-degree temperature changes and respond faster to thermal variances.