GE IS200DTTCH1A | Mark VIe Thermocouple/RTD Input Module In Stock

Description

Product Introduction

The GE IS200DTTCH1A is a Mark VIe series temperature input module that provides 16 channels of configurable temperature measurement for both thermocouple and RTD sensors in gas and steam turbine control applications. This I/O pack interfaces with thermocouple (J, K, T, E, R, S) and RTD (Pt100, Ni120) sensors, converting them to digital temperature values for the control system. It provides a flexible solution for applications with mixed temperature sensor types.

The H1A revision provides 16 channels that can be independently configured for thermocouple or RTD inputs, with 16-bit resolution and ±0.1% accuracy. In our field experience, the DTTCH1A is a versatile module that reduces spare part inventory by combining thermocouple and RTD capabilities in a single module. For facilities with mixed thermocouple and RTD temperature sensors, this module provides a flexible and cost-effective solution.

Key Technical Specifications

Key Selling Points & Differentiators

• 16-channel mixed TC/RTD input – supports both thermocouple and RTD sensors on the same module. Reduces spare part inventory for mixed sensor installations.
• Per-channel configuration – each channel can be independently configured for thermocouple or RTD input. Provides maximum flexibility for field installations.
• 16-bit resolution with ±0.1% accuracy – provides precise temperature measurement for critical turbine monitoring.
• Comprehensive diagnostics – open-circuit detection, short-circuit detection, and out-of-range detection enable rapid troubleshooting.
• Rigorous 48-hour burn-in – each unit runs with all 16 channels configured for mixed sensor types while monitoring for measurement errors and stability.
• 3-year warranty on hardware – backed by our in-house repair depot with average 48-hour turnaround. Dedicated DTTC swap-pool ensures rapid replacement.

Frequently Asked Questions (FAQ)

Can I hot-swap this IS200DTTCH1A into a running Mark VIe system?

We strongly advise against it. The DTTCH1A has shown unpredictable behavior when inserted into a powered backplane due to the configuration initialization process. Schedule a controlled outage, de-energize the rack, and swap it during planned maintenance.

What sensor types does this module support?

The DTTCH1A supports thermocouple types J, K, T, E, R, and S, and RTD types Pt100 and Ni120. Each channel is individually configurable through ToolboxST. It does not support B or N type thermocouples, or Pt200 RTDs – use the DTAI series for those types.

Can I mix thermocouple and RTD sensors on the same module?

Yes. Each of the 16 channels can be independently configured for thermocouple or RTD input. This is the key advantage of the DTTC series.

What is the maximum cable length for temperature inputs?

For thermocouple inputs, we recommend using shielded, twisted-pair extension wire with a maximum length of 100 meters. For RTD inputs, use 3-wire or 4-wire configuration with a maximum length of 100 meters for 3-wire and 200 meters for 4-wire.

How do I configure the channels?

Channel configuration is done in ToolboxST. Each channel can be set to a specific sensor type. The configuration is stored in the module’s EEPROM. After replacement, you must reconfigure the new module using ToolboxST.

Is there cold junction compensation for thermocouple inputs?

Yes. The module includes cold junction compensation (CJC) with ±0.5°C accuracy. The CJC temperature is measured by an onboard sensor and applied to each thermocouple channel.

How do I verify this is a genuine GE module?

We source exclusively from GE-authorized liquidations. Our verification includes OEM packaging inspection, serial number cross-check against GE records, and PCB inspection for GE-specific markings. We test all 16 channels with calibrated thermocouple and RTD simulators. We provide PCB photographs upon request.

Will I lose my configuration data when I replace the module?

Yes. Configuration is stored in the module’s EEPROM, not in the controller. You will need to reconfigure the new module in ToolboxST after installation. Take screenshots of your current configuration before replacement.

What is the expected lifespan of this unit?

We see MTBF around 145,000 hours for the DTTCH1A. The module has no wearable components. We have seen these units exceed 18 years in field service.

What happens if the module fails within the warranty period?

We cross-ship a tested replacement from our dedicated DTTC swap-pool the same business day. You return the failed unit within 15 days. Our repair depot has an average 48-hour turnaround. No restocking fees. You receive a DTTCH1A replacement.

Which termination board should I use with this module?

The IS200DTTCH1A mates with GE’s TS200DTT1 or TS200DTT2 termination boards. Check ribbon cable orientation; pin 1 has a red stripe. We include a wiring diagram PDF with every order.

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