GE DS200TBQAG1A RST Thermocouple Terminal Board
- Product Code: DS200TBQAG1A
- Availability: In Stock
GE DS200TBQAG1A (RST Terminal Board)
Part No.: DS200TBQAG1A
Manufacturer: GE (General Electric)
Series: Speedtronic Mark V (MKV) DS200
Type: RST Thermocouple Terminal Board
Application: Gas & Steam Turbine Control Systems
1. General Description
The DS200TBQAG1A (often referred to as TBQA) is a high-density thermocouple termination board designed exclusively for the GE Speedtronic Mark V turbine control system. It serves as the primary I/O interface for 45 channels of thermocouple signals, installed in the R, S, and T cores. This board conditions and distributes temperature sensor inputs to the main TCQA (Thermocouple Input) processing boards, featuring dedicated cold-junction compensation for precision.
2. Core Specifications
• Input Channels: 45 × Thermocouple (J, K, T, E, R, S, B)
• Signal Grouping: 3 × 15 channels (for R/S/T cores)
• Termination: 2 × 90-pin blocks (TB1, TB2) → 180 signal points
• Connectors: 3 × 20-pin ribbon cable headers
• Compensation: Solid-state cold junction (CJC)
• Power: 24 VDC (backplane), Max 8.5W
• Weight: Approx. 1.35 lbs (0.61 kg)
• Temp Range: 0°C to +60°C (Operating)
3. Key Functions & Features
• Signal Distribution: Routes 15 signals to each R/S/T core
• Precision Sensing: High-accuracy temperature measurement
• Noise Filtering: Industrial-grade EMI/RFI filtering
• Hot-Swap Support: Designed for safe replacement
• Status: Integrated LED diagnostics
4. Typical Usage
Primarily deployed in gas/steam turbine and power generation systems for:
- Exhaust gas temperature monitoring
- Bearing temperature protection
- Compressor/expander thermal sensing
- Generator winding temperature
- API 670 compliant safety shutdown loops
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