According to the use environment, it can be divided into industrial gas alarms and household gas alarms, and can be divided into fixed combustible gas alarms and portable combustible gas alarms according to their own forms. According to the working principle, they are sensor principle alarm, infrared detection alarm and high energy recovery alarm. Most use sensor-based alarms, and high-energy recovery alarms are still under development due to their high cost.
The industrial fixed combustible gas alarm is composed of an alarm controller and a detector. The controller can be placed in the duty room and mainly controls each monitoring point. The detector is installed in the place where the combustible gas is most likely to leak. Its core components are built-in The combustible gas sensor, the sensor detects the concentration of gas in the air. The detector converts the gas concentration detected by the sensor into an electrical signal and transmits it to the controller through the cable. The higher the gas concentration, the stronger the electrical signal. When the gas concentration reaches or exceeds the alarm point set by the alarm controller, the alarm will be sent out. Alarm signal, and can start external equipment such as solenoid valve and exhaust fan to automatically eliminate hidden dangers.
The portable combustible gas alarm is hand-held, and the staff can carry it with them to detect the concentration of combustible gas in different places. The portable gas detector integrates the controller and the detector, which is compact and flexible. The main difference compared with fixed gas alarms is that portable gas detectors cannot be connected to other equipment.
Household flammable gas alarms can also be called gas alarms, which are mainly used to detect household gas leaks and prevent gas poisoning and gas explosion accidents.
