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GE IC695ALG508-AA resistance input module

The GE IC695ALG508-AA is an 8-channel RTD and resistance input module developed for the PACSystems RX3i PLC platform.

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GE IC695ALG508-AA

GE IC695ALG508-AA RTD Input Module – Complete Product Guide

Introduction

The GE IC695ALG508-AA is an 8-channel RTD and resistance input module developed for the PACSystems RX3i PLC platform. Designed for high-accuracy temperature monitoring, this module converts signals from RTD sensors into precise digital values for industrial automation and process control systems.

Built for reliability and flexibility, the IC695ALG508-AA is widely used in demanding industries such as power generation, oil & gas, chemical processing, and manufacturing.


Key Benefits

High-Precision Temperature Measurement

The IC695ALG508-AA supports a wide range of RTD sensors and resistance inputs, enabling accurate temperature monitoring across harsh industrial environments.

Main advantages include:

  • High-resolution signal conversion
  • Excellent noise immunity
  • Stable performance in extreme temperatures
  • Ideal for mission-critical monitoring applications

Core Features

1. Eight Isolated Input Channels

The module provides 8 fully isolated differential channels, allowing simultaneous measurement from multiple RTD sensors while minimizing signal interference.

Supported wiring types:

  • 2-wire RTD
  • 3-wire RTD
  • 4-wire RTD

Isolation between channels ensures stable and reliable data acquisition in electrically noisy environments.


2. Wide Sensor Compatibility

The IC695ALG508-AA works with multiple RTD and resistance sensor types:

Supported RTD types:

  • Platinum (Pt100, Pt1000)
  • Nickel (Ni)
  • Copper (Cu)
  • Direct resistance inputs

Temperature measurement range:

  • Approx. –200°C to +850°C (depending on sensor)

This flexibility makes the module suitable for both low-temperature and high-temperature industrial processes.


3. Flexible Data Formats

The module supports multiple data output formats for seamless PLC integration:

  • 32-bit floating point values
  • 16-bit integer values
  • Temperature units selectable in °C or °F

This allows engineers to tailor configuration based on control system requirements.


4. Advanced Diagnostics & Noise Filtering

Built-in diagnostic functions improve system reliability and reduce downtime:

  • Open-wire detection
  • Channel fault diagnostics
  • Programmable digital filtering (2.3–28 Hz)
  • Status reporting for each channel

These features help maintenance teams quickly identify and resolve sensor or wiring issues.


5. Hot-Swap Capability

The IC695ALG508-AA supports hot insertion and removal, allowing replacement without shutting down the PLC system.
This reduces downtime and improves system availability in critical operations.


Technical Specifications

Specification Details
Product Type RTD / Resistance Input Module
Platform PACSystems RX3i
Channels 8 isolated differential inputs
RTD Wiring 2-wire, 3-wire, 4-wire
Resistance Range 250 Ω – 4 kΩ
Data Resolution Up to 12-bit (configurable)
Filtering 2.3 – 28 Hz programmable
Operating Temperature –40°C to +70°C
Installation RX3i Universal Backplane
Certifications CE, UL, CSA, ATEX Zone 2

Typical Applications

The IC695ALG508-AA is ideal for industries requiring accurate and reliable temperature monitoring:

Power Generation

  • Steam turbine temperature monitoring
  • Boiler and heat recovery systems
  • Generator cooling systems

Oil & Gas

  • Pipeline temperature monitoring
  • Refinery process control
  • Compressor and pump protection

Chemical & Process Industries

  • Reactor temperature control
  • Heat exchanger monitoring
  • Industrial furnace automation

Water & Wastewater

  • Pump station monitoring
  • Treatment process temperature control

Why Choose the IC695ALG508-AA?

Reliability – Designed for harsh industrial environments
Accuracy – High-precision RTD measurement capability
Flexibility – Supports multiple RTD types and wiring methods
Maintainability – Hot-swap design reduces downtime
Diagnostics – Built-in health monitoring and fault detection


Conclusion

The GE IC695ALG508-AA RTD Input Module is a robust and highly accurate solution for temperature monitoring within PACSystems RX3i control systems. With 8 isolated channels, advanced diagnostics, and flexible configuration options, it is an ideal choice for critical industrial automation and process control applications.

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