Description
The WESTINGHOUSE 5X00622G01 is a Precision RTD/Resistance Input Module for the WDPF II (Westinghouse Distributed Processing Family) distributed control system, engineered for high-accuracy temperature monitoring in critical power generation and industrial processes. This module interfaces directly with 2-wire, 3-wire, or 4-wire RTDs (Resistance Temperature Detectors) and resistance sensors, delivering ±0.05°C measurement stability for applications requiring extreme precision. The 5X00622G01 features per-channel excitation current control and automatic lead resistance compensation, eliminating measurement errors in long cable runs common in turbine halls and refinery pipe racks. Designed for harsh environments, it operates reliably from -40°C to 85°C with built-in surge protection meeting IEEE C62.41 Level III standards – essential for areas prone to lightning strikes and electromagnetic interference.
As part of Emerson’s legacy WDPF II support, the WESTINGHOUSE 5X00622G01 enables predictive maintenance through continuous monitoring of bearing temperatures, stator windings, and catalyst beds with 16-bit resolution. Its radiation-hardened variant (5X00622G01-N) complies with IEEE 323 nuclear qualifications, providing drift-free measurements in reactor auxiliary systems. The module’s patented noise rejection algorithm filters 60Hz interference without signal lag, ensuring accurate temperature tracking during motor starts and switching events.

5X00622G01 WESTINGHOUSE
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 5X00622G01 |
| Manufacturer | Westinghouse (Emerson Process Management) |
| Product Type | RTD/Resistance Input Module |
| System Platform | WDPF II DCS |
| Channels | 16 isolated inputs |
| Sensor Types | Pt100, Pt1000, Ni120, Cu10 (2/3/4-wire) |
| Measurement Range | -200°C to +850°C (-328°F to 1562°F) |
| Accuracy | ±0.05°C @ 0°C (with 4-wire connection) |
| Resolution | 0.01°C (16-bit ADC) |
| Excitation Current | 0.5mA/1mA/2mA software-selectable |
| Lead Resistance Comp | Automatic (up to 50Ω per lead) |
| Common Mode Rejection | >120dB @ 50/60Hz |
| Update Rate | 500ms (all channels) |
| Isolation | 1500V AC channel-to-backplane |
| Power Consumption | 4W @ 5V DC |
| Operating Temperature | -40°C to 85°C (-40°F to 185°F) |
| Certifications | UL 61010, IEEE 323 (Nuclear), ANSI MC96.1 |
Main Features and Advantages
Metrological Precision: The WESTINGHOUSE 5X00622G01 employs 6-wire measurement techniques internally, compensating for thermal drift in its own circuitry. Each channel features independent 24-bit sigma-delta converters with simultaneous sampling, eliminating skew errors in differential temperature monitoring. The module’s continuous sensor health diagnostics detect open circuits, shorted leads, and degradation below 85Ω resistance – critical for bearing temperature protection systems.
Extreme Environment Operation: Encapsulated signal conditioning blocks withstand 100g mechanical shock and 5g vibration (10-500Hz). Radiation-hardened variants use fused-junction RTD simulators for self-validation in nuclear environments. The 5X00622G01‘s active noise cancellation rejects VFD-induced interference up to 30V pk-pk without signal filtering delay, enabling real-time trip decisions for gas turbine exhaust monitoring.
Application Field
The WESTINGHOUSE 5X00622G01 ensures precision temperature control in:
Power Generation: Monitoring generator hydrogen cooler effectiveness (±0.1°C stability)
Refineries: Catalytic reformer bed temperature profiling (API 554 compliance)
Nuclear Plants: Reactor feedwater temperature monitoring (5X00622G01-N)
Chemical Processing: Exothermic reactor runaway prevention
HVAC: Chiller approach temperature calculations
Metals Industry: Annealing furnace zone control
During turbine coast-down events, its drift-free measurements prevent false trips during rapid temperature transients.

5X00622G01 WESTINGHOUSE
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