4D33942G01 Standard 12-Channel Isolated Thermocouple Temperature Input Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS
Description
Parameter Specifications
Part Number: 4D33942G01
Manufacturer: Emerson Westinghouse
Compatible System: Common Q Class 1E Safety Instrument & Control DCS System
Matching Accessories: Thermocouple master acquisition boards, 49E-3649 rack backplane, 475HP1ENA9GMT redundant rack power supply
PCB Material: Multi-layer isolated V-0 flame-retardant high-Tg FR-4 substrate
Dimension & Weight: 145mm × 66mm × 20.6mm; Net weight: 62g
Ambient Operating Envelope
Operating Temp: -25℃ ~ +70℃
Storage Temp: -50℃ ~ +125℃
Humidity: 5%–95% RH, non-condensing
Power Supply: DC 12V / DC 24V dual adaptive wide-range input
Input Channels: 12 fully independent galvanic isolated thermocouple input channels
Supported Thermocouple Types & Range
K-type: -200 ~ +1300℃
S/B-type: 0 ~ +1700℃ (nuclear high-temperature containment flue dedicated)
E/J/T-type: -200 ~ +800℃
Measurement precision: ±0.1℃ full span
Built-in on-board cold junction compensation, compensation precision ±0.2℃
Isolation Performance
Channel-to-backplane isolation: 1500V AC
Dielectric withstand: 2000V AC / 60s
Insulation resistance: ≥1200MΩ @ 500VDC
EMC Anti-interference Performance
Power frequency interference attenuation ≥40dB, fully compliant with IEC 61000-6-2 industrial EMC standard
Protection & Intelligent Diagnosis Functions
Per-channel microvolt signal overcurrent limiting protection
Bidirectional TVS high-energy surge absorption circuit
Reverse wiring polarity lockout anti-damage protection
Real-time full fault detection: thermocouple wire open-circuit, short-circuit, cold junction abnormal, signal potential drift, sensor aging failure
Time-stamped fault status + channel number + thermocouple type identification uploaded to master controller
Mechanical Reliability
Continuous vibration resistance: 8g (10–150Hz)
Shock resistance: 25g pulse, duration 11ms
Core Feature: Single module hot swappable under energized rack without interrupting safety high-temperature equipment temperature monitoring loops
Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety qualification
Aging Validation Standard: 72-hour full-load high-low temperature cyclic aging test + multi-point thermocouple precision calibration screening
Design Service Life: ≥100,000 hours of 24/7 unattended continuous operation
Warranty Period: 12-month global unified warranty for original factory modules and certified factory refurbished modules
Application Fields
Nuclear Power Plant Common Q Safety I&C Racks
Dedicated high-temperature multi-point thermocouple 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.
AP1000 Nuclear Post-Accident Monitoring System (PAMS)
Isolated multi-channel 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 monitoring.
Thermal & Hydropower Station Main Control Systems
High-density dedicated thermocouple module for boiler furnace wall temperature, superheater pipeline temperature, turbine exhaust gas high-temperature measuring points.
High-Risk Explosion-Proof Petrochemical DCS Distributed Control System
Special high-temperature wiring terminal card for reactor furnace wall thermocouples, high-temperature reaction pipeline temperature sensors and heating furnace flue measuring points in hazardous zones.
Offshore Oil & Gas Explosion-Proof Automation Racks
Isolation thermocouple acquisition interface for crude oil high-temperature pipeline probes, separator heating furnace wall thermocouples and marine platform waste flue temperature measuring points.
Large 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.
Municipal Large-Scale Water Treatment Safety Interlock DCS Systems
High-precision isolation thermocouple terminal for waste incineration furnace wall temperature, heat exchange high-temperature pipeline measuring points.
Metallurgy & Cement Kiln Production Lines
Dedicated ultra-high-temperature thermocouple acquisition module for rotary kiln firing zone wall temperature, high-temperature flue gas pipeline and preheating furnace thermocouple probes.
Series Unified Iteration Rule (Consistent with full Common Q I/O board product line)
G01: Standard basic industrial version, 1500V isolation, 40dB EMI attenuation, basic wire break/short-circuit fault alarm, no waveform storage
G02: Reinforced industrial enhanced version, 1800V isolation, 45dB attenuation, optimized cold junction compensation, fast thermal drift diagnosis
G03: Gen3 nuclear high-isolation grade, 2000V isolation, 50dB attenuation, fault waveform capture + non-volatile historical fault storage
G04: Gen4 flagship ultra-high isolation, 2200V isolation, 55dB attenuation, nanosecond high-precision timestamp, wider operating temperature range
G05: Gen5 premium seismic qualified grade, 2500V isolation, 60dB attenuation, anti-loose locking terminal structure, full IEEE 344 seismic certification, extended service life & warranty
G06: Gen6 extreme super-isolation flagship, 3000V isolation, 65dB attenuation, nuclear anti-radiation component screening, double anti-loose terminals, 15-year power-off fault data retention, full seismic & radiation dual certification
Series Distinction Note
4D33922 series: PT100 RTD low/medium temperature acquisition
4D33942 series: Multi-type thermocouple high-temperature dedicated acquisition
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