Honeywell 05701-A-302 Single Channel Catalytic Gas Detection Card System 57

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    • Product Code: 05701-A-302
    • Availability: In Stock
    Honeywell 05701-A-302 Single Channel Catalytic Gas Detection Card System 57
    Manufacturer: Honeywell Analytics
    Model: 05701-A-302 System57 Single Channel Control Card
    Compatible Platform: Honeywell System57 gas detection rack; 4–20mA output compatible with Experion PKS C300 DCS
    Type: Rack slot plug-in gas safety control module, catalytic bead sensor dedicated driver
    Core Function: Single channel gas concentration measurement, 3-level alarm relay output, local LCD calibration, Modbus RTU & 4–20mA DCS transmission, full self-diagnosis for sensor/cable faults
    1. Product Overview
    05701-A-302 is the core single-channel control card of Honeywell System57 gas detection rack system, dedicated to combustible gas LEL monitoring in hazardous industrial zones. It supports two mainstream field sensor signals: millivolt catalytic bead sensors and 4–20mA gas transmitters, with built-in high-precision signal conditioning and anti-interference filtering circuits. The front composite LCD integrates analog bar graph, digital value and fault text prompts, and technicians can complete sensor calibration and alarm parameter setting directly via front panel buttons without upper computer. Three independent alarm levels (A1/A2/A3) with corresponding LED indicators and multi-group relay dry contacts for interlocking ventilation fans, emergency shut-off valves and audible/visual alarms. It provides standard 4–20mA analog output and Modbus RTU serial communication interface to upload gas concentration and fault data to central DCS/SCADA systems such as Experion PKS C300. Continuous self-diagnosis detects sensor open circuit, cable short circuit and internal hardware failure, and displays fault codes on the screen for rapid maintenance. Low long-term drift reduces on-site calibration frequency, conformal coated PCB adapts to high temperature and humidity industrial cabinets. Honeywell has stopped new original production, only surplus and refurbished spare parts are available on the aftermarket.
    2. Full Technical Specifications
    • Supported Sensors: Catalytic bead mV sensor, 4–20mA gas transmitter
    • Alarm Levels: 3 stages A1/A2/A3, alarm resolution 1% FSD
    • Display: 25-segment analog bar + 4-digit digital LCD + status message icons
    • Status LEDs: A1/A2/A3 Alarm, Fault, Inhibit indicator lights
    • Communication Output: 4–20mA analog signal, Modbus RTU serial port
    • Safety Output: Multi-channel alarm relay dry contacts
    • Supply Voltage: 18~32VDC wide range DC power supply
    • Power Consumption: 3.75W (catalytic sensor mode), 3.25W (4–20mA mode)
    • Long-term Drift: ≤ ±2% within 6 months
    • Operating Temperature: -20℃ ~ +60℃ ventilated cabinet
    • Humidity: 5% ~ 95% RH non-condensing
    • Physical Size: 170mm × 25mm × 112mm (L×W×H)
    • Weight: 165g
    • Certifications: CE, UL industrial safety certification
    3. Front Panel Hardware Layout
    1. Composite LCD display: bar graph, digital reading, fault text
    2. 5 status LED lamps: A1/A2/A3, Fault, Inhibit
    3. Physical button: Alarm Reset / Card Select key
    4. Rack gold-plated rear connector for system power & bus
    5. Internal signal conditioning circuit & relay drive module
    4. System Matching Relationship
    • 05701-A-302: Gas detection control card (System57 rack exclusive)
    • System57 Rack: Multi-slot backplane rack for multiple gas cards parallel installation
    • Field Catalytic Gas Sensor: LEL combustible gas detection probe
    • Honeywell 51403479-150 MC-PHAI01: C300 DCS HART AI card, receives 4–20mA signal from 05701-A-302
    • Full signal chain: Gas sensor → 05701-A-302 processing → 4–20mA → MC-PHAI01 → C300 DCS HMI monitoring & interlock
    • Difference with GE VME series: Cannot be installed in Mark VI/EX2100 turbine control racks, independent gas safety platform hardware
    5. Typical Industrial Application Scenarios
    • Oil & gas plant: Tank area, compressor room combustible gas leakage safety monitoring
    • Chemical factory: Reaction workshop, raw material warehouse LEL gas continuous detection
    • Thermal power plant: Gas turbine fuel gas chamber, hydrogen station gas safety monitoring
    • Refinery & LNG station: Hazardous zone gas concentration early warning & emergency interlock control
    Honeywell Analytics © 05701-A-302 Single Channel Gas Control Card System 57 Safety Monitoring System


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