Honeywell 05704-A-0144 Catalytic Gas Control Card System57 Gas Detection Rack
- Product Code: 05704-A-0144
- Availability: In Stock
Purchase Attributes：Original, Brand New
Service Attributes
▷ Stock & Logistics：Fast Delivery
▷ After-sales Guarantee：12 Months Warranty
Physical Size: 170mm L × 25.4mm W × 132mm H,
Weight：400g
• Certifications: CE, UL508 industrial safety certification
Matching System: Honeywell System57 rack, pairs with 05701-A-0361 engineering master card
Honeywell 05704-A-0144 4 Channel Catalytic Gas Control Card System57 Gas Detection Rack
Manufacturer: Honeywell Analytics (Zellweger)
Model: 05704-A-0144 4-channel catalytic gas detection card
Matching System: Honeywell System57 rack, pairs with 05701-A-0361 engineering master card
Type: 1" width rack slot multi-channel gas control module, catalytic bead sensor dedicated driver
Core Function: 4-way catalytic sensor constant current drive, 3-level independent alarm relay output, backlit LCD local display, 4–20mA analog transmission, full channel self-diagnosis, backplane bus communication
1. Product Overview
05704-A-0144 is a high-density four-channel gas control card exclusive to Honeywell System57 gas safety monitoring rack, 1-inch narrow width design that replaces four single-channel 05701-A-302 cards to save cabinet slots.
It is specially designed for catalytic bead bridge combustible gas (LEL) sensors, with precise digitally adjustable constant current drive circuit to ensure stable measurement of flammable gas leakage in hazardous areas. Each channel is equipped with independent triple alarm logic and isolated SPDT relay dry contacts for safety interlock equipment.
Front backlit LCD supports multiple display switching modes, with independent LED status indicators and local alarm reset buttons for on-site maintenance. Built-in 4-channel 4–20mA analog output uploads gas concentration data to Experion PKS C300 DCS system.
All channel fault signals are uploaded to the rack master engineering card 05701-A-0361 via the proprietary System57 backplane serial bus for unified time-stamped event logging, batch calibration and centralized system diagnosis. Conformal coated PCB adapts to high temperature and humidity industrial cabinets. Honeywell discontinued new production, only refurbished and surplus spare parts available aftermarket.
2. Full Technical Specifications
• Input Channels: 4 independent catalytic bead bridge sensor channels
• Sensor Drive: Constant current 90~315mA, 1mA digital step adjustment, max drive voltage 10V
• Full Scale Signal Range: 15mV ~ 300mV bridge output
• Measurement Accuracy: ±1% FS nominal accuracy
• Max Cable Resistance: 40Ω (sensor + field wiring total)
• Alarm Levels: 3 independent programmable alarms A1/A2/A3 per channel
• Relay Output: 4 SPDT Form-C relays, 2A@30VDC / 0.5A@125VAC, 1500VAC channel isolation
• Analog Output: 4 isolated 4–20mA loop outputs for DCS upload
• Display: Backlit LCD, 25-segment bar graph + 4-digit digital value, multi-mode display switch
• Supply Voltage: 18 ~ 32VDC wide range rack DC power
• Power Consumption: Typical 8.5W, max 12.8W (200mA full sensor load)
• Diagnostic Indicators: CH1~CH4 status LED, Fault, Inhibit, Power OK front panel lamps
• Operating Temperature: -20℃ ~ +60℃ ventilated safety cabinet
• Humidity: 5% ~ 95% RH non-condensing
• Physical Size: 170mm L × 25.4mm W × 132mm H, weight ~400g
• Certifications: CE, UL508 industrial safety certification
3. Front Panel Hardware Layout
1. Backlit LCD composite display: analog bar + digital concentration reading
2. CH1/CH2/CH3/CH4 channel status LED array, Fault / Inhibit status lamps
3. Physical button: Alarm Reset / Channel Select switch for local operation
4. Rear gold-plated System57 backplane connector for bus communication & rack power input
5. Internal 4-channel relay drive circuit & isolated 4–20mA signal conditioning board
4. System Hardware Matching Chain
• 05704-A-0144: 4-channel multi-point gas detection control card (high-density alternative to 05701-A-302)
• 05701-A-0361: System57 rack master engineering management card (mandatory for full rack communication & configuration)
• Catalytic bead LEL combustible gas sensor: field detection probe for hazardous zone
• Honeywell 51403479-150 MC-PHAI01: C300 DCS HART analog input card, receives 4–20mA gas signal from this card
• Full signal chain: Field catalytic gas sensor → 05704-A-0144 signal processing & alarm logic → System57 backplane bus → 05701-A-0361 master card → 4–20mA / Modbus RTU → Experion PKS C300 DCS monitoring & interlock
• Platform Separation: Cannot be inserted into GE Mark VI / EX2100 turbine VME racks, independent gas safety monitoring hardware platform
5. Typical Industrial Application Scenarios
• Combined-cycle gas turbine power plant: Gas compartment, hydrogen station multi-point combustible gas centralized monitoring (4 probes per single slot)
• Oil refinery & LNG terminal: Tank farm, compressor room high-density gas leakage detection to save cabinet space
• Chemical plant hazardous workshop: Multi-area LEL gas continuous monitoring with independent safety interlock relays per zone
• Offshore oil & gas platform: Compact rack layout, multi-channel gas safety monitoring with unified fault timestamp logging for platform SCADA
Honeywell Analytics © 05704-A-0144 4 Channel Catalytic Gas Control Card System57 Gas Safety Monitoring System
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