Parameter Specifications

1. Part Number: 4D33770G01

2. Manufacturer: Emerson Westinghouse

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

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

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 Operating Envelope

   Operating Temp: -25℃ ~ +70℃

   Storage Temp: -50℃ ~ +125℃

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

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

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

10. Supported Standard Signals: 4–20mA DC loop current, 0–10V DC voltage

11. Isolation Performance

    Channel-to-backplane isolation: 1500V AC

    Dielectric withstand: 2000V AC / 60s

    Insulation resistance: ≥1200MΩ @ 500VDC

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

13. Protection & Diagnosis Functions

    Per-channel precise current limiting protection

    Bidirectional TVS high-energy surge absorption

    Reverse polarity miswiring protection

    Analog loop open-circuit / short-circuit real-time detection

    Time-stamped fault status uploaded to master controller

14. Mechanical Reliability

    Continuous vibration resistance: 8g (10–150Hz)

    Shock resistance: 25g pulse, duration 11ms

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

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

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

19. Warranty: 12-month global unified warranty for original & factory refurbished modules

Application Fields

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

   Standard analog signal acquisition terminal for auxiliary cabinet flow, pressure, liquid level and cooling medium transmitters of reactor auxiliary systems.

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

   Isolation analog signal conversion board for containment auxiliary process measurement transmitters.

3. Thermal & Hydropower Station Main Control Systems

   Compact analog input module for boiler auxiliary pressure, feedwater flow and tank level transmitters.

4. Explosion-Proof Petrochemical DCS Distributed Control System

   Field wiring terminal card for reactor medium pressure, pipeline flow and storage tank level analog transmitters.

5. Offshore Oil & Gas Explosion-Proof Automation Racks

   Isolation signal acquisition interface for wellhead pressure, crude pipeline flow and medium temperature transmitters.

6. Large Diesel Generator Safety Sequential Control Cabinets

   Compact analog input subcard for engine oil pressure, cooling water temperature and fuel flow transmitters.

7. Municipal Large-Scale Water Treatment Safety Interlock DCS

   Isolation measurement terminal for pipeline flow, sedimentation tank level and water pressure transmitters.

8. Metallurgy & Cement Kiln Production Lines

   Multi-point analog acquisition module for kiln pressure, flue gas flow and raw material bin level industrial transmitters.