Honeywell 05701-A-0351 Single channel control card

Honeywell 05701-A-0351 Product Description & Data Sheet

Product Type and Positioning

Core Functions and Technical Features

1. Gas Detection and Control
• Catalytic bridge (for combustible gas detection, e.g., LEL sensors).
• 4-20 mA loop-powered (for toxic gas or oxygen sensors).
• Input Compatibility: Supports two types of sensor inputs:
• Alarm Management: Three configurable alarm levels (A1, A2, A3) with relay outputs for shutdown or alert systems.
• Display and Diagnostics: Backlit LCD with bar graph and peak reading, plus LED indicators for power, fault, and alarm status58.
2. Physical and Electrical Specifications
• Relay Contacts: Triple SPCO (single-pole changeover) for alarm actions.
• Analog Output: Optional 0-20 mA or 4-20 mA isolated signal for integration with PLC/DCS58.
• Housing: 3U-high (133 mm) × 25 mm wide DIN rail-mountable card, IP54-rated for dust and splash protection.
• Power Supply: 18-32 VDC, typical power consumption: 3.75 W (catalytic) / 3.25 W (4-20 mA).
• Outputs:
• Certifications: EN 50270 (gas detection equipment), CE, and ATEX/IECEx (non-incendive) for Zone 2 hazardous areas5.
3. Environmental Resistance
• Operating Temperature: -5°C to +55°C (ambient), with sensor-specific temperature ranges depending on the input type.
• Humidity: 20-90% RH (non-condensing), suitable for high-moisture environments like offshore platforms5.

Technical Specifications Table

Application Scenarios

1. Oil and Gas Industry
• Refineries: Monitors hydrocarbon leaks in storage tanks and processing units (e.g., H₂S detection in amine units).
• Offshore Platforms: Integrates with emergency shutdown systems (ESD) to trigger alarms for combustible gas accumulations8.
2. Chemical Manufacturing
• Reactor Safety: Monitors toxic gas emissions (e.g., chlorine, ammonia) in production lines, ensuring compliance with OSHA and EPA standards.
• Warehouses: Detects flammable solvent vapors in storage areas to prevent explosions5.
3. Power Generation
• Coal-Fired Plants: Monitors CO levels in boiler rooms to prevent incomplete combustion and worker exposure.
• Biogas Facilities: Ensures methane concentration remains below LEL limits in digesters and pipelines.
4. Mining and Metals
• Underground Mines: Continuously monitors methane (CH₄) and carbon monoxide (CO) in tunnels, enabling timely evacuation if thresholds are exceeded.