Technical Key Points of Methane Gas Detection, Alarm And Monitoring System

                              Technical Key Points of Methane Gas Detection, Alarm and Monitoring System

    The system architecture design involves installing explosion-proof methane sensors in areas where methane is prone to generation or leakage. Catalytic combustion or electrochemical principle sensors are selected, with a detection range covering 0-100% LEL or 0-5000 ppm, and an accuracy of ≤±3%. The sensor's operating temperature range is -20℃ to 70℃. Data can be transmitted via wired connection through 4-20mA current signals or RS485 bus, or wirelessly using 4G/5G or LoRa technology for remote data transmission.

    It is recommended to set two levels of alarm thresholds (low alarm: 10% LEL; high alarm: 20% LEL). When the threshold is exceeded, a sound and light alarm (≥90 decibels) and relay interlock (such as starting the exhaust fan) will be triggered. Data preprocessing can be achieved, supporting data visualization, real-time curve display, and alarm log recording. Data can be viewed through a web or app, and alarm information can be received via SMS or app push notifications.

   The real-time monitoring module continuously collects methane concentration, temperature, and humidity data, and displays the PPM or %LEL values on the LCD screen. It can achieve alarm interlock, such as interlocking the sound and light alarm with the exhaust system and emergency shut-off valve, to form a "detection - alarm - response" closed loop.