Product Overview

The Allen-Bradley 1794-IRT8 functions as a high-density, multifunctional analog input module within the FLEX I/O family. It provides eight highly isolated channels capable of processing Thermocouple, RTD, and millivolt (mV) signals simultaneously. This module eliminates the need for separate RTD and TC cards, offering a consolidated solution for complex thermal monitoring applications. We supply this unit as 100% Brand New and Original, ensuring your industrial process maintains the highest level of signal accuracy and system uptime.

Technical Specifications

The 1794-IRT8 utilizes a 16-bit Sigma-Delta converter to deliver superior noise rejection and measurement precision.

Engineering Advantages

• Universal Input Flexibility: The 1794-IRT8 accepts a mix of RTDs and Thermocouples on a single module. This versatility reduces your spare parts inventory and simplifies the design of heterogeneous temperature control loops.

• Superior Signal Isolation: Industrial environments suffer from significant electrical noise and ground loops. This module provides robust channel-to-channel isolation, which prevents a fault on one sensor from propagating to others or damaging the backplane electronics.

• High-Resolution Digitization: The 16-bit resolution allows the PLC to detect minute temperature shifts. This precision proves critical in pharmaceutical, chemical, and food processing industries where narrow thermal windows determine product quality.

• On-Machine Distributed I/O: As part of the FLEX I/O system, the 1794-IRT8 mounts close to the process sensors. This minimizes the length of expensive compensated thermocouple lead wires, significantly reducing installation costs and potential EMI pickup.

FAQs

Q: Does the 1794-IRT8 require a specific terminal base?

A: Yes. You must install the module onto a compatible FLEX I/O terminal base, such as the 1794-TB3G or 1794-TB3GS. These bases provide the necessary grounding and cold-junction compensation (CJC) required for accurate thermocouple readings.

Q: Can I mix different Thermocouple types (e.g., Type J and Type K) on the same module?

A: Yes. You configure each channel independently via the PLC software (RSLogix 5000/Studio 5000). This allows you to monitor diverse sensor types across the eight available ports without hardware modifications.

Q: What is the difference between the 1794-IRT8 and the older 1794-IR8?

A: The 1794-IRT8 is a "combined" module. While the 1794-IR8 only supports RTDs and the 1794-IT8 only supports Thermocouples, the 1794-IRT8 supports both, plus millivolt inputs, offering significantly more application flexibility.