Description
GE IS200SRTDH2ACB | Mark VIe RTD Terminal Board | SRTD Temperature Input
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric |
| Model / Board Number | IS200SRTDH2ACB |
| Base Board Designation | IS200SRTDH2A |
| Product Family | Mark VIe |
| Functional Acronym | SRTD |
| Product Type | Compact RTD Terminal Board |
| Input Type | RTD |
| Number of RTD Inputs | 8 |
| Compatible RTD I/O Pack | IS220PRTDH1B |
| Processor Interface | PRTD / VRTD RTD input processor |
| Mounting | DIN rail or flat surface |
| Terminal Interface | High-density Euro-block style terminal blocks |
| Board Identification | On-board identification circuitry |
| PCB Coating | Conformal coating reported for the IS200SRTDH2A assembly |
| Primary Application | Turbine temperature measurement |
| System Role | Field termination / RTD signal interface |
The eight-channel designation and PRTD/VRTD relationship are documented by technical references for the IS200SRTDH2A. GE’s own Mark VIe certification documentation confirms that IS200SRTDH2A is an approved accessory terminal board for the IS220PRTDH1B RTD input module.
Product Introduction
The GE IS200SRTDH2ACB is an SRTD compact RTD terminal board used in the GE Mark VIe turbine control system. Its underlying board designation, IS200SRTDH2A, provides the field termination interface for RTD temperature signals and is documented as an accessory board for the Mark VIe IS220PRTDH1B RTD input module. Technical documentation identifies eight RTD input channels and a compact DIN-rail or flat-mount construction.
In a turbine control cabinet, this board is not the temperature-processing I/O pack itself. The SRTD board provides the physical field interface, while the associated RTD I/O hardware handles the measurement and controller communication. That distinction matters during replacement: purchasing an SRTD terminal board when the failed component is actually the PRTD I/O pack will not restore the temperature channel.
IS200SRTDH2ACB
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
RTD failures in a turbine cabinet are frequently diagnosed as sensor problems because the control system reports an abnormal temperature value, open circuit, or unstable measurement. The actual fault can be in the field wiring, terminal board, connector, RTD I/O pack, or configuration.
For IS200SRTDH2ACB, the first question should therefore be whether the problem is on the SRTD field-interface side or in the associated PRTD processing hardware.
Typical Applications
- GE Mark VIe gas turbine control systems requiring RTD temperature measurement
- Steam and turbine auxiliary temperature monitoring
- Bearing, winding, exhaust, and other plant temperature measurement points where compatible RTD instrumentation is configured
- Mark VIe RTD input assemblies using the IS220PRTDH1B I/O pack
Technical Pitfalls to Avoid
- Do not confuse the SRTD board with the RTD I/O pack.
The IS200SRTDH2A is the terminal/interface board. GE identifies the IS220PRTDH1B as the RTD input module that works with this class of terminal board. Replacing only one side of a failed pair may not solve the problem. - Verify the complete part-number and revision marking.
Listings commonly shorten IS200SRTDH2ACB to . The shorter designation is useful for identifying the board family, but procurement should match the physical board marking, revision, connectors, and existing Mark VIe configuration before installation. - Do not publish unsupported RTD accuracy or sensor-range specifications as guaranteed board specifications.
Some secondary listings assign Pt100/Pt1000/Ni sensors, 3-wire operation, accuracy, isolation, and temperature ranges to this part without consistent supporting documentation. Those parameters should be verified against the installed PRTD hardware, application configuration, and GE documentation rather than assumed from the terminal-board number.
Related Products
- GE IS220PRTDH1B — Mark VIe RTD input I/O pack; the primary processing module associated with the SRTD terminal-board architecture. GE specifically lists as a compatible accessory board.
- GE IS200SRTDH1A — Related SRTD terminal-board variant used in the Mark VIe RTD input architecture.
- GE IS200TRTDH2D — Another Mark VIe RTD terminal-board configuration listed by GE for use with RTD input hardware.
- GE IS221PRTDH1B — Related RTD input module for the IS201-series Mark VIe terminal-board architecture.
- GE IS201SRTDH2A — Corresponding IS201-series SRTD terminal-board family member used with the Mark VIe architecture.
- GE IS201SRTDH1A — Related SRTD board variant for the corresponding IS201 hardware family.
- GE IS200TBAIH2C — Mark VI/VIe analog I/O terminal-board family; functionally different from the dedicated RTD interface.
- GE IS200STCIH6A — Mark VI contact-input terminal board; useful for distinguishing discrete contact input hardware from RTD temperature interfaces.
Procurement Check
Before approving an IS200SRTDH2ACB replacement, verify:
- Exact board marking:
- Base designation:
- Mark VIe system compatibility
- SRTD terminal-board function
- Eight-channel RTD arrangement
- Associated or applicable RTD I/O hardware
- Connector and terminal-block arrangement
- PCB revision and artwork revision
- Existing RTD sensor type and wiring configuration
- Field cable shielding and grounding
- ToolboxST / Mark VIe configuration
- Whether the fault is actually on the terminal board or the associated RTD I/O pack
Recommended procurement description:
GE / Mark VIe SRTD Compact RTD Terminal Board, 8-Channel RTD Interface, for GE Mark VIe RTD Input Architecture, Compatible with .
The key point for replacement work is that is a field-interface/terminal board, not the RTD processor itself. GE’s documentation confirms the board as an accessory terminal board for the RTD input module, so the terminal board and I/O pack should be treated as separate components during troubleshooting and procurement.
