GE DS200TBQAG1A1 TBQA Thermocouple Terminal Board

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Product Overview

The GE DS200TBQAG1A1 is listed as an RST terminal board in the DS200TBQA family for Mark V turbine control. The TBQA board handles thermocouple temperature signals, bringing field inputs together and passing them to the associated TCQA or TCCA I/O board. It also provides cold-junction compensation circuits, an important part of thermocouple temperature measurement. In the Mark V LM design, the board’s signal paths are organized through JAR, JAS, and JAT connections.

Technical Specifications

Manufacturer: GE
Full model: DS200TBQAG1A1
Board family: DS200TBQA
Product type: Thermocouple termination board
Control system: Speedtronic Mark V LM
Input signal: Thermocouple temperature signal

Features & Model Benefits

Industries Served
• Power Generation: Temperature-signal handling in Mark V-controlled gas turbine generating units.
• Oil & Gas: Turbine control for gas compression and other turbine-driven processes.
• Petrochemicals: Thermocouple monitoring in plants that operate Mark V-controlled turbine equipment.
• Industrial Cogeneration: Turbine temperature inputs in facilities producing electricity and process heat.

Frequently Asked Questions

Q1. What type of signal does the DS200TBQA board handle?
It handles thermocouple temperature inputs. GE documents the TBQA as a thermocouple termination module, rather than an RTD or milliamp termination board.
Q2. Why do TBQA references mention both 45 and 42 inputs?
The GE manual describes a 45-signal arrangement routed to TCQA boards and a separate 42-signal arrangement connected to a TCCA board. The count depends on the Mark V core configuration.
Q3. What is the purpose of cold-junction compensation on this board?
The TBQA provides cold-junction compensation circuits alongside its thermocouple signal paths to support temperature measurement.
Q4. What do the JAR, JAS, and JAT connections carry?
They carry the thermocouple signal groups and their corresponding cold-junction signals to the associated I/O board.

Company Profile
About Us:A professional supplier of industrial automation spare parts, mainly providing module spare parts for globally renowned brands of DCS systems, PLC systems, robot systems, and large servo control systems.
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Service scope: Our clients are located in over 165 countries worldwide, serving multiple industries such as metallurgy, power, chemical, oil and gas.
Product category: Rare, legacy or brand new PLC, HMI, DCS, hard drive, sensor, power supply.