Emerson Ovation 5X00121G01 8-Channel RTD Input Module

5X00121G01 is an 8-channel RTD temperature acquisition module under Emerson Ovation DCS platform, inherited from Westinghouse. It collects resistance signals from 2/3-wire RTD temperature probes, converts resistance variation into digital temperature values, and transmits data to Ovation controller for boiler, turbine and pipeline temperature monitoring and closed-loop control.

This rack plug-in module adopts full-channel electrical isolation and built-in channel fault diagnosis function. It supports hot-swap replacement under redundant rack without system shutdown, featuring wide temperature resistance and strong anti-interference performance. It is widely used as spare part for thermal power, nuclear power and petrochemical DCS cabinet maintenance and system renovation projects.

Main Specifications

• Brand: Emerson (Westinghouse Ovation)
• Model: 5X00121G01
• Product Type: 8-Channel Multi-type RTD Temperature Input Module
• Supported Sensors: PT100, PT1000, Cu100 2-wire / 3-wire RTD probes
• Measurement Accuracy: ±0.1% FS, 16-bit conversion resolution
• Isolation Grade: Channel-to-power 2.5kV AC isolation, suppress ground loop interference
• Power Supply: 24VDC ±10% redundant backplane power supply
• Working Temperature Range: -40℃ ~ +70℃, humidity 5%~95% non-condensing
• Core Feature: Hot-swappable, per-channel open/short circuit fault detection
• Mounting: Standard Ovation DCS rack plug-in installation
• Application: Spare part replacement for energy industry DCS temperature monitoring hardware

Core Functions

• Simultaneously acquire temperature resistance signals of eight independent RTD measuring points on site
• Automatically convert resistance signals into standard digital temperature data for controller operation calculation
• High isolation design eliminates electromagnetic interference in power plant and chemical plant harsh environment
• Real-time detect sensor open-circuit, short-circuit faults and upload alarm information to DCS operation workstation
• Support hot-swap operation to realize online module replacement without stopping unit temperature monitoring loop
• Front panel LED indicators display power, communication and each channel running status for quick field inspection
• Fully compatible with all series Ovation controllers and backplanes for flexible system capacity expansion

Application Scenarios

• Thermal power plant boiler wall, steam turbine, generator bearing multi-point temperature monitoring cabinet configuration
• Nuclear power reactor, auxiliary water pump safety temperature measurement system supporting projects
• Petrochemical heating furnace, reaction kettle and pipeline high-precision temperature signal collection
• On-site RTD card fault replacement and daily maintenance of Ovation DCS control system
• Old power plant DCS reconstruction project to upgrade multi-channel high-precision temperature acquisition capability
• Spare parts inventory backup of Westinghouse Ovation series temperature input modules for power plants
• Engineering maintenance projects of temperature signal acquisition hardware in energy and chemical DCS systems