Methane Concentration Alarm Terminal - Safety Monitoring in Coal Gasification Plant Areas - SKA/CH4-BJQ
• Measuring range: 0～100%LEL
• Accuracy: ±3%FS
• Resolution: 0.1%LEL
• Output signal: 4～20mA, RS485 Modbus, relay alarm output
• Power supply: DC24V
• Medium temperature: -20℃～50℃
• Working pressure: 80～120kPa
• Protection rating: IP66
• Explosion-proof rating: Ex d IIC T6 Gb
• Response time: ≤30s
• Alarm setpoint: 25%LEL (adjustable)
• Installation method: wall-mounted
• Warranty: 1 year
Product Introduction
Methane Concentration Alarm Terminal - Safety Monitoring in Coal Gasification Plant Areas - Product Overview
The methane concentration alarm terminal is a gas detection terminal device used for safety monitoring in coal gasification plant areas. Search keywords: methane concentration alarm terminal, safety monitoring in coal gasification plant areas, methane alarm. This terminal can continuously detect methane concentration in the plant area. When the concentration exceeds the limit, it emits sound and light alarms and outputs linkage signals to control the ventilation system. In safety monitoring of coal gasification plant areas, the methane concentration alarm terminal can reflect methane changes in the gasification, purification, and shift conversion areas in real time, ensuring the safety of operators.
Methane Concentration Alarm Terminal - Safety Monitoring in Coal Gasification Plant Areas - Working Principle
The methane concentration alarm terminal uses a catalytic combustion sensor or infrared sensor to output electrical signals by detecting methane concentration, and after processing by a microprocessor, determines whether to alarm. In safety monitoring of coal gasification plant areas, the methane concentration alarm terminal supports RS485, 4-20mA, and Modbus outputs and can be connected to PLC, DCS, and gas alarm control systems. The terminal has an explosion-proof enclosure and a high protection rating, making it suitable for high-temperature, high-dust, and corrosive environments in coal gasification.
Methane Concentration Alarm Terminal - Safety Monitoring in Coal Gasification Plant Areas - Application Scenarios
Methane concentration alarm terminals are widely used in the gasifier area, purification area, shift conversion area, and compression plant of coal gasification. In safety monitoring of coal gasification plant areas, methane concentration alarm terminals can be installed near gasifiers, pipeline valves, and personnel inspection passages. The terminal can be linked with exhaust fans, shut-off valves, and fire protection systems to achieve automatic handling. For large coal gasification plants, methane concentration alarm terminals can also form a multi-point monitoring network and upload data uniformly to the control room.
Methane Concentration Alarm Terminal - Safety Monitoring in Coal Gasification Plant Areas - Technical Advantages
The methane concentration alarm terminal has advantages such as easy installation, continuous monitoring, and flexible linkage. In safety monitoring of coal gasification plant areas, the methane concentration alarm terminal adopts industrial-grade sensors and explosion-proof design, making it suitable for long-term operation. The terminal supports sound and light alarms, fault self-diagnosis, and remote output, and is easy to maintain. When selecting a methane concentration alarm terminal, attention should be paid to detection range, accuracy, response time, explosion-proof rating, and output mode to ensure reliable and effective safety monitoring in coal gasification plant areas.
Main Application Areas
- Coal Gasification Plant — Continuous methane monitoring in gasification, purification, and shift conversion areas to prevent explosive atmospheres.
- Chemical Processing — Detection of methane leaks in chemical production units to ensure process safety and compliance.
- Oil and Gas Refineries — Monitoring methane concentration in refining and storage areas for early leak warning.
- Wastewater Treatment — Methane monitoring in anaerobic digestion and biogas production facilities to prevent accumulation.
- Power Generation — Safety monitoring in natural gas power plants and boiler rooms to detect fuel leaks.
Keywords：methane alarm terminal, gas detector, coal gasification safety, CH4 monitor, LEL detector, explosion-proof transmitter, gas alarm system, industrial gas monitoring
