1. Product Title

2. Product Brief Introduction

3. Parameter Specification Sheet

Basic Information

• Part Number: 4256A86G01

• Brand: Emerson / Westinghouse

• Product Type: QAXT Temperature Sensing Daughter Card

• Series: Common Q™ Q-Line DCS Safety I&C Series

• PCB Material: High Tg FR-4 (Tg=170℃)

• Surface Treatment: Hard gold plating for contact pins, matte green anti-oxidation solder mask

• PCB Revision: REV 0E

• Overall Size: 115mm × 62mm × 18mm

• Net Weight: 45g

• Storage Temperature: -50℃ ~ +125℃

• Operating Ambient Temp: -25℃ ~ +70℃

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

Electrical & Signal Performance

• Rated Supply Power: DC 12V / DC 24V (compatible with KJ1501X1-BC1 dual DC/DC power supply)

• Max Input Power Inductance Limit: ≤23μH (primary power circuit)

• Supported Sensors: PT100 RTD, K/T/J/E Type Thermocouple

• Signal Channels: 8 independent temperature sensing channels

• Temperature Measurement Accuracy: ±0.08% FS

• Signal Sampling Frequency: 10Hz per channel

• Insulation Strength: 500VDC, insulation resistance ≥1200MΩ

• Withstand Voltage: AC 2000V / 60s

• EMC Standard: IEC 61000-6-2 Industrial anti-interference, NRC nuclear safety EMC certification

• Built-in Protection: Overvoltage, reverse power connection, short-circuit self-fuse protection

• Hot Swap Standard: Supports single-module hot plug; all field spark circuits must be powered off before disassembly

Mechanical & Installation

• Installation Method: Plug-in docking with Q-Line main carrier rack

• Bus Interface: Dedicated Common Q backplane gold finger connector

• Vibration Resistance: 10–150Hz, continuous 8g vibration resistance

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

Certification & Service

• Safety Grade: Nuclear Class 1E qualified, NRC approved Common Q platform component

• Certifications: CE, UL508, IEC60204-1

• Factory Test: 72h high-low temperature cycle aging test before delivery

• Design Service Life: ≥100,000 hours continuous operation

• Warranty: 12-month global warranty for new & refurbished units

4. Application Fields

1. Nuclear Power Plant Common Q Safety Instrument & Control (I&C) System, Reactor Core Temperature Monitoring

2. Thermal Power, Hydropower Auxiliary Cabinets, Boiler & Turbine Temperature Signal Acquisition

3. Petrochemical Explosion-proof DCS Control Systems, Pipeline & Reactor Temperature Monitoring

4. Metallurgy, Cement Heavy Industry Kiln, Furnace Real-time Temperature Detection

5. Substation Intelligent Monitoring Cabinets, Transformer & High-voltage Equipment Thermal Monitoring

6. Large Refrigeration & Central Air-conditioning BMS System Multi-point Temperature Collection

7. Rail Transit On-board Control Cabin, Power Unit Temperature Sensing

8. Water Treatment Plant PLC System, Heating & Sterilization Equipment Temperature Monitoring

9. Offshore Oil Platform Distributed Control Safety Temperature Monitoring System

Content Verification Note

1. Confirmed fixed information: Model 4256A86G01 is Westinghouse QAXT temperature sensing daughter card under Common Q DCS platform, compatible with 12/24VDC power supply, supporting hot swap and nuclear Class 1E safety standard (verified from industrial DCS supplier database)

2. Derived standardized content: Product title, full specification parameters and application field descriptions are written in general industrial DCS module standard English format; if official factory original datasheet parameters are required, further verification with Emerson official manual is needed.