MDK - Model AQM-EC6 -Tunnel Air Quality Detector

The appearance of CO, CH4, H2S, NO, NO2, and VI tunnel air quality detector is shown in the figure. It is mainly composed of a visibility chassis, transmitting and receiving terminals, internal integrated circuits, and reflecting prisms. The circuit mainly consists of MCU controller, infrared transmitter, infrared receiver, gas sensor, RS485 communication module, power conversion module and so on. This technology uses infrared technology to measure visibility. The measuring device consists of a light source capable of emitting infrared rays, an infrared receiving probe and a reflector 3 meters away. The reflected light beam is received by the infrared receiving probe and the light attenuation parameters are measured, The concentration measurement of H2S, CO, CH4, NO, and NO2 uses electrochemical sensor technology. The amount of CH4 concentration uses catalytic combustion technology.