Products Description
GE DS200TCTGG1AFF Thermocouple Input Board in stock
GE DS200TCTGG1AFF is a thermocouple input board for GE Mark V Speedtronic gas and steam turbine control system. It collects temperature signals from multiple thermocouple sensors, performs cold-junction compensation and signal conditioning, and sends converted digital temperature data to the main turbine controller.

This board supports multiple thermocouple types, with onboard filtering circuits and LED diagnostic indicators. It connects to field temperature sensors via termination boards and communicates with the rack backplane. It is an obsolete legacy PCB, mainly used as surplus or refurbished spare parts for power plant Mark V turbine control system maintenance and retrofit.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | GE General Electric |
| 2 | Model | DS200TCTGG1AFF |
| 3 | Module Type | Thermocouple Input Board |
| 4 | Compatible System | Mark V Speedtronic Gas / Steam Turbine Control System |
| 5 | Signal Type | Thermocouple temperature signal with cold junction compensation |
| 6 | Diagnostics | Onboard LED indicators for channel status and fault alarm |
| 7 | Operating Temperature | 0℃ ~ +60℃ |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Receive raw millivolt signals from turbine thermocouple temperature sensors |
| 2 | Built-in cold junction compensation to improve temperature measurement accuracy |
| 3 | Signal filtering and conditioning to suppress industrial electromagnetic interference |
| 4 | Convert analog thermocouple signals into digital data for main controller processing |
| 5 | LED indicators to display channel working state and open-circuit sensor faults |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Power plant Mark V gas and steam turbine casing and exhaust temperature monitoring |
| 2 | Combined cycle power unit turbine thermal parameter closed-loop protection |
| 3 | Oil & gas power generation turbine high-temperature point measurement system |
| 4 | Heavy industry large turbine thermal monitoring cabinet temperature acquisition |
| 5 | Legacy Mark V turbine control system spare parts replacement and maintenance retrofit |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q:What is GE DS200TCTGG1AFF? A:It is thermocouple input board for Mark V Speedtronic turbine control system, used for collecting thermocouple millivolt signals and converting to accurate turbine temperature readings. |
| 2 | Q:What fault will occur when thermocouple wire breaks? A:The board will detect open circuit and trigger alarm via LED indicator, temperature reading will be abnormal. |
| 3 | Q:Is this board still in production? A:No, GE discontinued production, only surplus and refurbished spare parts available for legacy turbine system maintenance. |