1. Basic Information

• Brand: General Electric (GE)

• Model: IS220PRTDH1B (Main Module), 336A5026ADP13 (PCB/Material Part Number)

• Series: GE Speedtronic Mark VIe Gas/Steam Turbine Control System

• Product Type: 8‑Channel RTD (Resistance Temperature Detector) Input Module (I/O Pack)

• Core Function: Acquire temperature signals from Pt100, Pt1000 and other RTD sensors, perform high‑precision A/D conversion, signal conditioning, open/short circuit diagnosis, and upload temperature data to the Mark VIe main controller for unit temperature monitoring, protection and closed‑loop control.

2. Key Technical Specifications

3. Product Composition & Positioning

• IS220PRTDH1B: Core RTD acquisition main module integrating signal conditioning, A/D conversion, redundant communication and fault‑diagnosis circuits, serving as the core unit for temperature data collection.

• 336A5026ADP13: PCB/material part number for this module, a complete identifier for the same hardware as IS220PRTDH1B, used together and non‑separable.

4. Core Features

1. High‑Precision & Reliable Acquisition: 16‑bit A/D converter, 4‑wire compensation eliminates lead wire errors; industrial‑grade EMC/vibration resistance (compliant with IEC 60068), suitable for harsh power plant and petrochemical environments.

2. Redundancy & Safety Design: Supports system‑level redundancy with bumpless fault switching; built‑in open/short circuit/overtemperature diagnostics to trigger protection logic and ensure unit safety.

3. Native System Compatibility: Fully compatible with GE Mark VIe control systems; configurable, calibrated, monitored and fault‑recorded via ControlST/ToolboxST software.

4. Flexible Wiring & Maintenance: Supports 2/3/4‑wire RTD connections with clear terminals for field wiring; online diagnostics and hot‑swap capability reduce downtime for maintenance.

5. Typical Applications