Parameter Specifications

1. Part Number: 4D33942G02

2. Manufacturer: Emerson Westinghouse

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

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

5. PCB Material: Multi-layer thick copper zero-halogen V-0 flame-retardant high-Tg FR-4 substrate

6. Dimension & Weight: 145mm × 66mm × 20.6mm; Net Weight: 64g

7. Ambient Operating Envelope

   Operating Temp: -25℃ ~ +70℃

   Storage Temp: -50℃ ~ +125℃

   Humidity: 5%–95% RH, non-condensing

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

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

10. Supported Thermocouple Types & Measurement Index

    • K / S / B / E / J / T universal thermocouple compatible

    • S/B type high-temperature range: 0 ~ 1700℃ (nuclear containment flue dedicated)

    • K/E/J/T range: -200 ~ 1300℃

      Full-span measurement precision: ±0.08℃ (upgraded from G01 ±0.1℃)

      On-board optimized cold junction compensation, compensation accuracy ±0.15℃

11. Isolation Index

    Single channel 1800V AC isolation withstand; 2000V AC dielectric strength withstand test for 60s; Insulation resistance ≥1200MΩ @500VDC

12. EMC Anti-interference Performance

    Power frequency interference attenuation ≥45dB, fully compliant with IEC 61000-6-2 industrial EMC specification and nuclear plant supplementary electromagnetic screening standards

13. Protection & Intelligent Diagnosis Functions

    • Per-channel ultra-low microvolt signal dual-stage overcurrent limiting protection

    • Bidirectional cascaded large-energy surge absorption circuit, stronger anti-inductive transient impact

    • Full misconnection anti-damage protection: reverse polarity, cross wiring, overvoltage, undervoltage

    • Real-time fast multi-dimensional fault detection: thermocouple open circuit, short circuit, cold junction temperature abnormal, signal potential drift, wire aging resistance drift, terminal loose contact

    • High-precision time-stamped fault code + channel number + thermocouple type marking real-time upload to master controller

14. Mechanical Reliability

    Continuous vibration resistance 8g (10–150Hz); Shock resistance 25g pulse, 11ms duration

15. Core Feature: Single module hot swappable under energized rack without interrupting Class 1E safety high-temperature monitoring loops

16. Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety qualification

17. Aging Validation Standard: 72-hour full-load high-low temperature cyclic aging test + multi-point high-precision thermocouple calibration screening

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

19. Warranty Period: 12-month global unified warranty for original factory modules and certified factory refurbished modules

Application Fields

1. Nuclear Power Plant Common Q Safety I&C Racks

   Reinforced high-precision multi-point high-temperature acquisition terminal for reactor auxiliary safety cabinets, centralized collection of main steam pipeline S/B-type thermocouples, containment exhaust flue K-type temperature signals and steam generator high-temperature wall measuring points.

2. AP1000 Nuclear Post-Accident Monitoring System (PAMS)

   High anti-interference isolated thermocouple input board for containment passive cooling high-temperature pipeline sensors, containment atmosphere high-temperature measuring points and post-accident core auxiliary equipment over-temperature early warning monitoring.

3. Thermal & Hydropower Station Main Control Systems

   Upgraded reinforced thermocouple module for boiler furnace wall temperature, superheater pipeline temperature, turbine exhaust gas high-temperature measuring points of seismic-resistant power plants.

4. High-Risk Explosion-Proof Petrochemical DCS Distributed Control System

   Premium reinforced high-temperature wiring terminal card for reactor furnace wall thermocouples, high-temperature reaction pipeline temperature sensors and heating furnace flue measuring points in hazardous explosion zones.

5. Offshore Oil & Gas Explosion-Proof Automation Racks

   Anti-vibration isolation thermocouple acquisition interface for crude high-temperature pipeline probes, separator heating furnace wall thermocouples and marine platform waste flue temperature measuring points.

6. Large Heavy-Duty Diesel Generator Safety Sequential Control Cabinets

   Multi-point thermocouple input subcard for genset cylinder exhaust temperature, exhaust manifold high-temperature and waste heat recovery pipeline temperature sensors of nuclear island backup power units.

7. Municipal Large-Scale Waste Incineration Safety Interlock DCS Systems

   Reinforced isolation high-precision thermocouple terminal for incinerator furnace wall temperature, high-temperature heat exchange pipeline measuring points.

8. Metallurgy & Large Cement Kiln Production Lines

   High-reliability reinforced thermocouple acquisition module for rotary kiln firing zone wall temperature, high-temperature flue gas pipeline and raw material preheating furnace thermocouple probes.

Core Upgrade Comparison: G02 vs Base G01

1. Channel isolation voltage upgraded from 1500V AC to 1800V AC, significantly suppress inter-channel microvolt signal crosstalk in high-EMI containment environment

2. EMI filter upgraded to multi-stage high-order composite network, interference attenuation improved from 40dB to 45dB, stronger anti-power frequency radiation interference

3. Measurement precision and cold junction compensation accuracy optimized, full-span error reduced, more stable long-term temperature measurement drift control

4. Added terminal loose contact and wire aging resistance drift dual early warning diagnosis functions, G01 only supports simple open/short circuit alarm

5. Surge absorption circuit upgraded to two-stage cascaded design, stronger resistance to field switching transient and lightning pulse impact

6. PCB copper thickness increased, terminal surface anti-corrosion passivation coating enhanced, adapt to long-term high-humidity nuclear island operating environment

7. Mechanical dimensions, backplane pin definitions, thermocouple signal logic fully consistent with G01, support direct plug-and-play drop-in replacement without rack wiring modification