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4A04102G01 16-Channel Isolated RTD & Thermocouple Temperature Terminal Daughter Card for Common Q Class 1E Nuclear DCS System

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4A04102G01 16-Channel Isolated RTD & Thermocouple Temperature Terminal Daughter Card for Common Q Class 1E Nuclear DCS System
June 10, 2026

4A04102G01 16-Channel Isolated RTD & Thermocouple Temperature Terminal Daughter Card for Common Q Class 1E Nuclear DCS System

The 4A04102G01 is a nuclear safety-grade dedicated temperature signal isolation terminal subcard designed for Emerson Westinghouse Common Q Class 1E safety I&C platform. It serves as the galvanic isolation conversion bridge between field PT100 RTD sensors, multi-type thermocouples and rack internal temperature acquisition boards. This module receives weak thermal resistance and thermoelectric potential signals from long-distance high-temperature field sensors, implements independent channel filtering, common-mode surge suppression and ground loop offset elimination, and converts tiny raw temperature signals into standard bus signals recognizable by the rack master CPU.

Description

1. Product Title

4A04102G01 16-Channel Isolated RTD & Thermocouple Temperature Terminal Daughter Card for Common Q Class 1E Nuclear DCS System

2. Product Brief Introduction

The 4A04102G01 is a nuclear safety-grade dedicated temperature signal isolation terminal subcard designed for Emerson Westinghouse Common Q Class 1E safety I&C platform. It serves as the galvanic isolation conversion bridge between field PT100 RTD sensors, multi-type thermocouples and rack internal temperature acquisition boards. This module receives weak thermal resistance and thermoelectric potential signals from long-distance high-temperature field sensors, implements independent channel filtering, common-mode surge suppression and ground loop offset elimination, and converts tiny raw temperature signals into standard bus signals recognizable by the rack master CPU.
Each channel is equipped with independent reinforced isolation circuits and multi-stage low-pass EMI filters to suppress industrial frequency interference, lightning transients and thermal noise interference widely existing in nuclear islands, thermal power boiler furnaces and petrochemical high-temperature reaction workshops. The PCB adopts multi-layer V-0 flame-retardant high-Tg FR-4 substrate, equipped with hard gold-plated backplane gold fingers and high-temperature resistant nickel-plated field wiring terminals, maintaining stable temperature measurement accuracy under long-term high temperature, high humidity and dusty harsh industrial environments. Every channel integrates independent overcurrent protection, reverse wiring blocking and open-circuit short-circuit automatic detection; single-channel sensor open/short faults are isolated separately without affecting other temperature measurement loops and core rack control equipment. The card supports single-module hot swapping under energized racks to reduce field temperature sensor wiring maintenance downtime. All finished modules pass 72-hour high-low temperature cyclic aging testing and fully comply with NRC Nuclear Class 1E safety certification standards, providing reliable isolated signal access for safety-critical high-precision temperature monitoring racks.

3. Parameter Specification Sheet

Basic Information

  • Part Number: 4A04102G01

  • Brand: Emerson / Westinghouse

  • Product Type: Isolated RTD & Thermocouple Temperature Field Terminal Daughter Card

  • Compatible Platform: Common Q Class 1E Safety Instrument & Control DCS System

  • Matching Modules: Temperature acquisition master boards, 49E-3649 rack backplane, 475HP1ENA9GMT redundant rack power supply

  • PCB Material: Multi-layer isolated high Tg FR-4, V-0 flame retardant

  • Surface Treatment: Hard gold plating for backplane connectors; high-temperature resistant nickel anti-corrosion screw field terminals

  • Overall Dimensions: 118mm × 64.8mm × 19.8mm

  • Net Weight: 54g

  • Storage Temperature Range: -50℃ ~ +125℃

  • Operating Ambient Temperature: -25℃ ~ +70℃

  • Working Humidity: 5% ~ 95% RH, non-condensing

  • Matched Power Input: DC 12V / DC 24V dual voltage adaptive

  • Primary Power Circuit Inductance Limit: ≤23μH

Electrical & Temperature Signal Performance

  • Rated Supply Voltage: DC 12V / DC 24V wide dual input

  • Signal Input Channels: 16 fully independent isolated temperature channels

  • Supported Field Temperature Sensors: PT100 3-wire RTD, K/J/T/E/R/S/B type thermocouples

  • Single Channel Isolation Dielectric Strength: Field sensor side ↔ rack internal logic circuit ≥1500V AC

  • Power Frequency Interference Attenuation: ≥40dB

  • Temperature Signal Transmission Precision: ±0.08% full scale

  • Insulation Resistance: ≥1200MΩ @ 500VDC test voltage

  • Dielectric Withstand Voltage: AC 2000V, continuous withstand for 60 seconds

  • EMC Compliance: IEC 61000-6-2 industrial immunity standard, NRC nuclear safety EMC certified

  • Integrated Protection & Diagnosis Mechanisms: Per-channel independent overcurrent fuse protection, bidirectional surge transient absorption, reverse wiring blocking, sensor open/short-circuit automatic detection, ground potential difference suppression, channel fault code upload to rack diagnostic board

  • Hot Swap Regulation: Single temperature terminal card supports hot plug; remaining temperature measuring channels maintain uninterrupted real-time temperature collection during module replacement

Mechanical & Installation Specifications

  • Mounting Method: Plug-in docking with Common Q rack backplane 49E-3649

  • Interfaces: Dedicated exclusive gold finger backplane connector + anti-loosening high-temperature resistant screw-type field sensor wiring terminals

  • Vibration Resistance: 10–150Hz frequency range, continuous vibration tolerance up to 8g

  • Shock Resistance: 25g pulse impact resistance, pulse duration 11ms

Certification & Quality Standards

  • Safety Grade: NRC Nuclear Class 1E qualified safety critical temperature measurement signal isolation component

  • Global Certifications: CE, UL508, IEC60204-1

  • Pre-delivery Test Items: 72-hour high-low temperature cycle aging test, full-range RTD/thermocouple precision calibration test, surge impact durability test, sensor open-circuit fault linkage test

  • Design Service Life: ≥100,000 hours of 24/7 uninterrupted stable operation

  • Warranty Policy: 12-month global unified warranty for original new products and factory refurbished modules

4. Application Fields

  1. Nuclear power plant Common Q Class 1E safety I&C system, temperature signal isolation terminal for reactor core, coolant pipeline PT100 and furnace thermocouple sensors

  2. AP1000 nuclear Post-Accident Monitoring System (PAMS), containment multi-point temperature measurement signal conversion interface board

  3. Thermal power & hydropower stations, boiler wall, turbine bearing, flue gas multi-point temperature sensor acquisition terminal module

  4. Petrochemical explosion-proof DCS distributed control system, high-temperature reactor, pipeline wall temperature measuring wiring card

  5. Offshore oil & gas platform explosion-proof safety automation rack, wellhead pipeline and process equipment temperature signal isolation board

  6. Large diesel generator unit safety sequential control cabinet, cylinder exhaust, cooling water temperature RTD/thermocouple input subcard

  7. Municipal large-scale water treatment safety interlock DCS rack, heating tank and pipeline medium temperature sensor terminal board

  8. Metallurgy & cement kiln-furnace production line, kiln body high-temperature thermocouple and roller PT100 signal acquisition module

Content Verification Note

  1. Confirmed fixed factual information: 4A04102G01 is Emerson Westinghouse Common Q standard 16-channel temperature terminal daughter card, compatible with PT100 RTD and multi-type thermocouple sensors, 1500V per-channel isolation, built-in sensor open/short-circuit detection, single-module hot swappable, compliant with NRC Nuclear Class 1E safety standards, matched with rack backplane 49E-3649 (based on Common Q nuclear DCS spare parts unified coding specification)

  2. Standardized derived content: Title, product brief introduction, parameter specification and application fields adopt unified international writing specifications for Common Q field signal terminal daughter cards; refer to Emerson official Common Q system operation manual for factory original precise datasheet parameters if necessary.

Optional Independent Short Titles

  1. 4A04102G01 16-Channel Isolated RTD/TC Temperature Terminal Card for Class 1E Nuclear DCS

  2. 4A04102G01 Common Q Nuclear-Grade Temperature Sensor Signal Interface Daughter Card

  3. 4A04102G01 Isolated Temperature Field Wiring Board for Nuclear Safety I&C Rack


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