GE IS230TDBTH6A

Product Parameters

Advantages and Key Features

• Cost‑Optimized Temperature Termination – The IS230TDBTH6A provides essential thermocouple and RTD termination features at a lower cost point compared to premium boards, making it ideal for standard temperature monitoring applications.

• Integrated CJC Sensor – Includes a solid‑state cold junction compensation sensor (±0.2°C accuracy), eliminating the need for external CJC references and ensuring accurate thermocouple measurement.

• Comprehensive Sensor Support – Supports all common thermocouple types (J, K, T, E, R, S, B, N) and RTD types (PT100, PT500, PT1000, Ni120, Cu10) through module configuration.

• Flexible RTD Wiring – Supports 2‑wire, 3‑wire, and 4‑wire RTD configurations, allowing compensation for lead wire resistance.

• Pluggable Terminal Design – The IS230TDBTH6A features a 2‑piece pluggable terminal block design, allowing field wiring to be disconnected without removing individual wires, simplifying maintenance and module replacement.

• Integrated Signal Conditioning – Provides mounting locations for termination resistors and filter capacitors to match sensor characteristics and reject noise.

• Wide Temperature Range – Rated for -30°C to +65°C, suitable for most industrial and turbine environments.

• Flame‑Retardant Housing – UL 94 V‑0 rated material provides safety in the event of electrical faults.

Application Fields and Use Cases

1. Exhaust Gas Temperature (EGT) Monitoring

The IS230TDBTH6A connects multiple exhaust gas thermocouples to the IS220PTCCH1A, providing EGT data for combustion monitoring and turbine protection with cost‑effective CJC compensation.

2. Bearing Temperature Monitoring

Provides connections for PT100 RTD sensors on turbine bearings, with 3‑wire or 4‑wire configurations for lead resistance compensation.

3. Generator Stator and Rotor Temperature

Connects PT100 RTD sensors for generator winding temperature monitoring in combined‑cycle power plants.

4. Auxiliary System Temperature Monitoring

The IS230TDBTH6A provides temperature connections for lube oil, cooling water, and hydraulic systems, where cost‑effectiveness is a priority.

5. Combustion Chamber Monitoring

Thermocouple connections for combustion chamber temperature monitoring, enabling detection of combustion instability.

6. Retrofit Projects

The IS230TDBTH6A is a cost‑effective upgrade from legacy temperature termination boards for standard Mark VIe temperature applications.

Comparison with Competing Products

Key Differentiators: The IS230TDBTH6A is the cost‑optimized entry point for GE Mark VIe temperature termination, offering essential CJC and signal conditioning features at a lower cost. While it offers slightly lower CJC accuracy (±0.2°C), narrower temperature range (-30°C to +65°C), and lower ESD protection compared to premium boards (IS230TCISH7C, IS230TCISH9C), it provides sufficient performance for standard turbine monitoring applications. For demanding applications such as high‑accuracy EGT spread monitoring, the premium boards are recommended.

Selection Suggestions and Precautions

Selection Criteria

• Choose the IS230TDBTH6A for standard temperature monitoring applications where cost‑effectiveness is a priority and CJC accuracy of ±0.2°C is acceptable.

• For high‑accuracy applications (EGT spread monitoring, critical bearing temperature), consider the IS230TCISH7C (±0.1°C) or IS230TCISH9C (±0.05°C).

• For applications requiring Type C thermocouple or Ni100 RTD support, use the IS230TCISH9C.

• Verify compatibility with the specific I/O module: IS220PTCCH1A for thermocouples or IS220PRTDH1A for RTDs.

• Ensure the application temperature range is within -30°C to +65°C.

Critical Precautions

1. CJC Sensor Environment – The IS230TDBTH6A CJC sensor provides ±0.2°C accuracy when the terminal block is in thermal equilibrium. Protect the board from drafts, heat sources, and direct sunlight.

2. Thermocouple Wiring – Use the correct thermocouple extension wire matching the thermocouple type. Do not use copper wire for thermocouple extensions.

3. RTD Wiring – For 3‑wire RTDs, ensure all three leads have the same resistance. For 4‑wire RTDs, use separate sense and excitation wires. Use shielded twisted‑pair cables.

4. Shielding and Grounding – Terminate shields at the field device end only, not at the IS230TDBTH6A, to prevent ground loops.

5. Terminal Tightening – Use the specified torque (0.5–0.6 N·m) for screw terminals. Over‑tightening may damage terminals; under‑tightening may cause intermittent connections.

6. Sensor Configuration – Configure each channel via the Mark VIe Toolbox for the correct thermocouple type, RTD type, and wiring configuration. Incorrect configuration will produce erroneous readings.

7. ESD Handling – Use grounded wrist straps when handling the IS230TDBTH6A to prevent static damage. While it provides basic ESD protection, proper handling is still essential.

8. Obsolescence – The IS230TDBTH6A is in active production with long‑term support. For future projects requiring enhanced features, evaluate the IS230TCISH7C or IS230TCISH9C. Keep spare boards for critical applications.