IC3603A277C - Thermocouple AVG Module

SPECIFICATIONS

Part No: IC3603A277C
Manufacturer: General Electric
Function: Thermocouple AVG Module
Series: Mark I and II
Repair: 3-7 Day
Availability: In Stock
Country of Manufacturer: United States (USA)

Functional Description

IC3603A277C is a Thermocouple AVG Module developed by GE. It is a part of Mark I and II control system. Designed to manage temperature-related tasks with exceptional accuracy. It is vital in monitoring and controlling temperatures to ensure safety and efficiency. Processes the thermocouple signals and provides an average temperature reading, enabling the control system to monitor and regulate temperatures accurately for optimal performance and safety.

Features

• Thermocouple Signal Averaging: Receives input from multiple thermocouples (typically 12), then calculates and outputs a single averaged temperature value. This averaging helps smooth out anomalies from individual sensors and provides a more accurate representation of the overall turbine exhaust temperature.
• Cold Junction Compensation: To ensure accuracy in high-temperature environments, the module includes cold junction compensation. This corrects for temperature variations at the connection point between the thermocouple and the measuring device, improving measurement precision.
• Check/Average/Reject Switches: Each thermocouple input is equipped with a three-position switch—CHECK, AVERAGE, and REJECT—mounted on the front panel of the Speedtronic control system for operator convenience:
  • CHECK: Allows the operator to individually monitor the output of a single thermocouple.
  • AVERAGE: Includes the thermocouple in the overall average calculation.
  • REJECT: Excludes a faulty thermocouple (e.g., open or shorted) from the average without major impact.
• Fault Tolerance: The design allows one or more thermocouples to be rejected with minimal effect on the overall average. For instance, rejecting one thermocouple only alters the result by 1/12 of that sensor’s deviation. This ensures continued reliability even with minor sensor failures.

WOC is happy to assist you with any of your GE requirements. Please contact us by phone or email for pricing and availability on any parts and repairs.

FREQUENTLY ASKED QUESTIONS

What is IC3603A277C?
It is a Thermocouple AVG Module developed by GE.

What happens if a thermocouple fails?
If a thermocouple becomes open or shorted, it can be manually set to REJECT using the front-panel switch. The system will then exclude it from the average calculation, minimizing its effect on overall accuracy.

What are the positions of the AVERAGE switches used for?
AVERAGE Include the thermocouple in the average temperature calculation.

How is cold junction compensation handled?
The module includes built-in cold junction compensation, which adjusts readings to account for variations at the thermocouple connection point, ensuring accurate temperature measurements.