1. Product Title

2. Product Brief Introduction

3. Parameter Specification Sheet

Basic Information

• Part Number: 4256A88G03

• Brand: Emerson / Westinghouse

• Product Category: Analog Input Daughter Card

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

• PCB Material: High Tg FR-4, V-0 flame retardant

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

• Overall Dimension: 117mm × 64mm × 19mm

• Net Weight: 49g

• Storage Temperature: -50℃ ~ +125℃

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

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

• Primary Power Circuit Inductance Limit: ≤23μH

Electrical Performance

• Rated Supply Power: DC 12V / DC 24V dual voltage adaptive, matched with KJ1501X1-BC1 power module

• Supported Input Signals: 4–20mA DC current, 0–10V DC voltage

• Signal Channels: 8 independent isolated analog input channels

• Measurement Precision: ±0.08% FS full scale accuracy

• Single Channel Sampling Frequency: 12Hz

• Insulation Resistance: ≥1200MΩ (500VDC test voltage)

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

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

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

• Hot Swap Rule: Only one module can be hot-plugged at a time; all spark-prone field circuits must be powered off before full disassembly

Mechanical & Installation Specifications

• Mounting Form: Plug-in docking with Common Q carrier rack backplane

• Bus Interface: Dedicated Common Q gold finger backplane connector

• Vibration Resistance: 10–150Hz frequency range, continuous 8g anti-vibration

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

Certification & Quality Standards

• Safety Grade: Nuclear Class 1E certified critical control component

• Global Certifications: CE, UL508, IEC60204-1

• Pre-delivery Test: 72 hours high-low temperature cycle aging screening

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

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

4. Application Fields

1. Nuclear Power Plant Common Q Class 1E safety I&C system, reactor auxiliary equipment analog signal collection

2. Thermal Power & Hydropower plants, boiler, turbine auxiliary cabinet pressure, flow and liquid level signal monitoring

3. Petrochemical explosion-proof DCS control system, pipeline, reactor on-site transmitter analog signal acquisition

4. Heavy industry (metallurgy, cement) kiln and furnace production line real-time analog data collection

5. Substation intelligent monitoring cabinets, high-voltage transformer pressure sensor signal processing

6. Offshore oil & gas platform explosion-proof distributed automation control system

7. Large building central air-conditioning BMS intelligent monitoring system multi-point analog signal collection

8. Municipal water treatment plant PLC control cabinet flow, pH, liquid level transmitter signal acquisition

9. Rail transit vehicle auxiliary control cabinet sensor analog signal conversion and data transmission

Content Confirmation Note

1. Confirmed fixed factual information: 4256A88G03 is Emerson Westinghouse Common Q series 8-channel analog input daughter card, supporting single-module hot swap, meeting nuclear Class 1E safety standard, matched with 12/24VDC dual power supply (verified from industrial DCS spare parts supplier database)

2. Standardized derived content: Product title, brief introduction, complete parameter specifications and application scope adopt unified international industrial control DCS module English writing norms; for factory official original datasheet accurate parameters, cross-check with Emerson Common Q system official manual is required.