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4D33731G01 Standard 12-Channel RTD Isolated Temperature Input Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS

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4D33731G01 Standard 12-Channel RTD Isolated Temperature Input Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS
June 10, 2026

4D33731G01 Standard 12-Channel RTD Isolated Temperature Input Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS

NRC Class 1E nuclear safety certified, the 4D33731G01 is a standard isolated RTD temperature acquisition terminal daughter card developed for Emerson Westinghouse Common Q safety I&C platform. It receives 3-wire PT100 platinum resistance temperature signals from field pipeline, equipment and bearing temperature sensors. Each channel adopts independent 1500V galvanic isolation and multi-stage LC EMI filters to suppress power frequency interference, ground loop offset and lightning transient noise. Equipped with standard hard gold-plated backplane connectors and corrosion-resistant nickel screw terminals, this card supports open/short-circuit sensor fault detection, complete multi-layer channel protection and hot-swap function, delivering stable temperature signal acquisition for conventional auxiliary nuclear safety monitoring under high-temperature, humid and dusty industrial environments.

Description

Parameter Specifications

  1. Part Number: 4D33731G01

  2. Manufacturer: Emerson Westinghouse

  3. Compatible System: Common Q Class 1E Safety Instrument & Control DCS System

  4. Matching Accessories: RTD temperature master acquisition boards, 49E-3649 rack backplane, 475HP1ENA9GMT redundant rack power supply

  5. PCB Material: Multi-layer isolated V-0 flame-retardant high-Tg FR-4

  6. Dimension & Weight: 120mm × 66mm × 20.6mm; Net weight: 58g

  7. Ambient Conditions: Operating temperature -25℃ ~ +70℃; Storage temperature -50℃ ~ +125℃; Humidity 5%–95% RH, non-condensing

  8. Power Supply: DC 12V / DC 24V dual adaptive input

  9. Input Channels: 12 fully independent galvanic isolated RTD input channels

  10. Supported Sensor: 3-wire PT100 platinum resistance temperature detector

  11. Measurement Range: -200℃ ~ +850℃

  12. Isolation Performance: 1500V AC isolation voltage per channel; 2000V AC dielectric withstand for 60s; Insulation resistance ≥1200MΩ @ 500VDC

  13. EMC Index: Power frequency interference attenuation ≥40dB, compliant with IEC 61000-6-2 industrial EMC standard

  14. Protection & Diagnosis: Per-channel current-limiting protection, bidirectional surge absorption, reverse polarity protection, sensor open-circuit/short-circuit fault detection, real-time fault status upload to main controller

  15. Mechanical Performance: Continuous vibration resistance 8g (10–150Hz); Shock resistance 25g pulse, duration 11ms

  16. Core Feature: Single-module hot swappable under energized rack

  17. Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety certification

  18. Aging Test Standard: 72-hour full-load high-low temperature cyclic aging test

  19. Design Service Life: ≥100,000 hours of 24/7 uninterrupted continuous operation

  20. Warranty: 12-month global unified warranty

Application Fields

  1. Nuclear power plant Common Q Class 1E safety I&C racks: Temperature signal acquisition terminal for auxiliary cabinet pipeline, pump bearing and cooling medium PT100 sensors

  2. AP1000 nuclear Post-Accident Monitoring System (PAMS): Isolated temperature conversion board for containment equipment and circulation pipeline temperature probes

  3. Thermal & hydropower station control systems: RTD input module for boiler drum wall, turbine bearing and cooling water PT100 temperature sensors

  4. Explosion-proof petrochemical DCS distributed control system: Wiring card for reactor wall, pipeline medium and storage tank PT100 temperature detectors

  5. Offshore oil & gas explosion-proof automation racks: Signal isolation board for wellhead pipeline, separator and crude oil medium PT100 temperature sensors

  6. Large diesel generator safety sequential control cabinets: Temperature input subcard for engine cylinder, bearing and cooling water PT100 probes

  7. Municipal large-scale water treatment safety interlock DCS: Isolation terminal for sewage pipeline, aeration tank and equipment bearing PT100 temperature sensors

  8. Metallurgy and cement kiln production lines: Temperature acquisition module for kiln shell, flue gas pipeline and raw material equipment PT100 temperature detectors


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