GE IS200TBTCH1C Thermocouple Terminal Board for Mark VI – Stable, clean TC signal termination for turbine controls

The GE IS200TBTCH1C is a Mark VI series thermocouple terminal board designed to bring multiple temperature points into the control system with low noise and dependable cold-junction compensation. From my experience, this board is typically used across gas and steam turbine compartments where you’ve got long TC runs and you need consistent readings without drift. You might notice that it’s a passive termination layer—simple to fit, easy to replace, and it tends to just keep working in cabinet conditions when wiring is done right.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Thermocouple signal termination – Built for TC inputs commonly used in turbine compartments; keeps wiring tidy and serviceable.
• Cold Junction Compensation – On-board CJC typically ensures stable, repeatable readings across cabinet temperature swings.
• Broad TC type compatibility – Usually supports Types J, K, E, T, N, R, S, and B, which covers most plant standards.
• Shielding and grounding provisions – Helps reduce induced noise on long runs; in many cases we see smoother trending after proper shield termination.
• Passive board, no separate power – Simplifies cabinet design and minimizes failure points.
• Direct Mark VI integration – Connects to the associated Mark VI I/O via multi-pin cable headers for straightforward swap-outs.
• Service-friendly layout – Clear channel labeling and screw terminals make field checks and replacements quicker than you’d expect.

Technical Specifications

Related or Supporting Products

• GE IS200TBTCH1B – Earlier hardware revision; form-fit-function similar in many cases. Good as a field spare when cabinet BOM allows.
• GE IS200TBTCI1C – Alternate TC terminal board variant used in some Mark VI frames; check connector orientation and cable part numbers.
• Shielded TC extension leads – Low-noise, high-temp rated leads for long runs; typically improves signal stability on older harnesses.
• Mark VI I/O cabling – Matched multi-pin cables for the TC I/O module; replacing aged cables often resolves intermittent drift.

One thing I appreciate is how drop-in compatible these terminal boards tend to be within the same Mark VI family. Still, it’s best to confirm against your panel’s bill of materials and the I/O card part number to avoid connector mismatches.

Installation & Maintenance

• Environment – Install in a clean, ventilated control cabinet. Keep high-voltage or high-current cabling physically separated from TC runs to minimize noise.
• Shielding & Grounding – Terminate shields at one end only (cabinet end is typical) to avoid ground loops. Maintain stable cabinet ground bonding.
• Wiring – Use proper TC-grade extension wire matching the TC type. Tighten terminal screws to recommended torque and label channels for traceability.
• Commissioning – After installation, perform a channel check with a known temperature source or a certified simulator. Verify CJC compensation is reading correctly.
• Routine care – Re-torque terminals during outages, clean dust with dry air, and inspect cable headers for oxidation. Firmware updates, if any, are typically on the I/O module rather than this passive board.
• Safety – De-energize the cabinet section before replacing boards. Follow plant ESD controls; these channels are low-level mV and can be sensitive.

A maintenance supervisor told us they swapped an IS200TBTCH1C during a short window and recovered stable readings on a suspect K-type loop immediately—seems to be a common quick win when connectors age.

Quality & Certifications

• CE marking applied at system level for Mark VI cabinets; board-level spares typically follow the same design standards.
• UL Recognized Component status is common for GE control boards used inside industrial panels.
• RoHS applicability can vary by production date; many legacy Mark VI spares fall under industrial exemptions.
• Manufacturer warranty practice typically aligns with our 365-day coverage for supplied spares.