IS200TTURH1B | 24V RTD/Thermocouple Input Rev B

Description

Product Introduction (Anti-Template)

The jump from ‘A’ to ‘B’ on this universal temperature board is about real-world accuracy—better sensor excitation, better cold junction compensation, and better noise rejection in a single board that handles both RTDs and thermocouples. The IS200TTURH1B is the revision B variant of the TTUR series, designed for applications where you need to mix RTD and thermocouple sensors on the same board. This board supports both sensor types with jumper-configurable channels, but with significantly improved accuracy over the ‘A’ revision.

What changed from ‘A’ to ‘B’? The RTD excitation source was upgraded with tighter tolerance and better temperature stability—about 20% better current stability over temperature. The thermocouple cold junction compensation was refined with improved reference accuracy and better thermal tracking. The input filtering was enhanced for better noise rejection on long sensor runs. Compared to the TTURH1A, the ‘B’ offers noticeably better accuracy across both sensor types, especially in thermally variable cabinets. This board is a drop-in replacement for the IS200TTURH1A, with no software changes required.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement: IS200TTURH1A — The immediate predecessor. Identical pinout, mounting, and software interface. The ‘B’ has enhanced excitation, improved CJC, and better filtering. No software changes required.

✅ Drop-in Replacement: IS200TTURH1 — The base revision. Direct hardware match. The ‘B’ is a significant upgrade in accuracy and stability.

⚠️ Software Compatible: IS200TRTDH1A — Dedicated RTD board. No thermocouple capability. Requires software reconfiguration. Budget 2-4 hours.

⚠️ Software Compatible: IS200TBTCH1A — Dedicated thermocouple board. No RTD capability. Requires software reconfiguration. Budget 2-4 hours.

⚠️ Software Compatible: IS200TBCI1A — General-purpose analog I/O board. Requires external conditioning and complete rework. Budget 8-12 hours.

❌ Hardware Incompatible: IS200TBQGH1A — Excitation termination board. Different pinout and application.

Frequently Asked Questions (FAQ)

Q: What makes the ‘B’ revision different from the ‘A’?

A: Three improvements. First, the RTD excitation source was upgraded with tighter tolerance and better temperature stability—about 20% better current stability. Second, the thermocouple cold junction compensation was refined with better reference accuracy. Third, the input filtering was enhanced for better noise rejection on long sensor runs. These add up to noticeably better accuracy across both sensor types.

Q: Is the TTURH1B worth upgrading from the A revision?

A: If you have long RTD or thermocouple runs (over 50 meters) or your cabinet temperature fluctuates, yes. The improved excitation and CJC accuracy will give you more stable readings. For short sensor runs in stable cabinets, the ‘A’ is still a good board.

Q: Can I replace a TTURH1A board with a TTURH1B without any changes?

A: Yes. The ‘B’ is a drop-in replacement. No software changes, no wiring changes, no configuration changes.

Q: What sensor types does the TTURH1B support?

A: The TTURH1B supports RTDs (typically Pt100, 3-wire) and thermocouples (J, K, and T types). Each channel is configured via jumpers.

Q: What bench testing should I do before installing a TTURH1B?

A: Standard temperature input protocol. First, visual inspection—verify jumper settings. Second, verify continuity. Third, for RTD channels, simulate temperatures with precision resistors. For thermocouple channels, use a precision thermocouple simulator. Verify accuracy at multiple points. Fourth, test stability across temperature by heating the board to 50°C.

Q: Is the TTURH1B hot-swappable?

A: We advise against hot-swapping temperature input boards. Power down the cabinet segment before swapping.

Q: How do I verify I’m getting a genuine TTURH1B?

A: Check component markings against GE documentation. Weigh the board; should be about 362 grams. Look for the GE holographic security label.

Q: Where do I find the official wiring diagram for the TTURH1B?

A: GE document GEK-130554 covers the TTUR series. The ‘B’ has identical terminal assignments to the ‘A’. Pay special attention to the jumper configuration table. Always cross-reference against your cabinet’s as-built drawings. Verify every channel before terminating.

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