Why This Thermocouple Terminal Board Connects Temperature Sensors Accurately
The GE IS200TBTCH1C IS200TBTCH1CBB terminates thermocouple wires for Mark V turbines. This board connects temperature sensors directly to the control system. It provides cold junction compensation for accurate temperature readings. For this reason, the GE IS200TBTCH1C IS200TBTCH1CBB ensures precise exhaust and inlet temperature monitoring. It also simplifies field wiring for multiple thermocouple channels.
Technical Specifications of the Board
We engineer this GE IS200TBTCH1C IS200TBTCH1CBB for reliable thermocouple signal termination. It operates without an external power supply. The board features sixteen thermocouple input channels. Each channel includes a dedicated cold junction compensation sensor. On‑board capacitors filter high-frequency noise from thermocouple leads.
| Specification | Value | Additional Notes |
|---|---|---|
| Full Model | GE IS200TBTCH1C IS200TBTCH1CBB | Thermocouple Terminal Board |
| Power Supply | Passive operation | No external power needed |
| Thermocouple Inputs | Sixteen differential channels | Accepts Type J, K, T, E |
| Cold Junction Compensation | Dedicated sensor per channel | Accuracy ±0.5°C |
| Wire Gauge | 20‑24 AWG | For thermocouple extension wire |
| Input Impedance | 1MΩ minimum | Minimizes signal loading |
| Filtering | RC filter per channel | Removes high-frequency noise |
| Isolation Voltage | 500V AC between channels | Prevents ground loops |
| Dimensions | 220mm x 120mm x 55mm | Fits Mark V termination racks |
| Weight | 0.52 kg (approximately) | Lightweight for easy mounting |
| Interface Type | Backplane connector + screw terminals | Gold‑plated for low thermal EMF |
| Component Count | 96 discrete components | CJC sensors, capacitors, resistors |
Hardware Architecture and Signal Path
The GE IS200TBTCH1C IS200TBTCH1CBB contains no active electronic components. Each channel routes directly from terminal to backplane connector. Moving to CJC section, sixteen temperature sensors measure the terminal block temperature. The control system uses these values to compensate thermocouple readings. Moreover, the CBB revision adds nickel-plated terminals for corrosion resistance. This improvement maintains low contact resistance in humid environments.
Installation and Wire Transfer Guidelines
You must disconnect all thermocouple wires before removing the old board. Label each wire with its corresponding channel number on the GE IS200TBTCH1C IS200TBTCH1CBB first. Then transfer each wire to the exact same channel on the replacement board. Verify all screws tighten securely to prevent poor connections. Skipping this step will cause inaccurate temperature readings. Additionally, use only thermocouple-grade wire for extensions.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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