Casing&tubing pipe OCTG Linzhou Fengbao Pipe Industry Co.,Ltd. , https://www.cfbpcoltd.com
Grade: J55~N80,L80,R95,P110~Q125,etc.
O.D: 1.660"~13-3/8"
End type: Thread/EUE
Working principle of gas alarm
Introduction to the working principle and concept of gas alarm, gas alarm is a gas leak detection alarm device. When the gas leaks in the industrial environment and the gas alarm detects that the gas concentration reaches the critical point set by the explosion or poison alarm, the gas alarm will issue an alarm signal to remind the staff to take safety measures. The gas alarm is equivalent to automatic Fire extinguishers, etc., can be installed to drive exhaust, cut off, and sprinkler systems to prevent explosions, fires and poisoning accidents, thereby ensuring safe production. The gas alarm can measure various gas concentrations. Often used in chemical plants, oil, gas stations, steel plants, etc.
Working principle of gas alarm
The gas alarm for households is generally installed in the kitchen. When the gas sensor encounters gas, the core gas sensor of the gas alarm is commonly known as "electronic nose". The sensor resistance changes with the gas concentration, and an electrical signal is generated. Gas alarm after-stage processing. After processing by the electronic circuit, it becomes a voltage signal with a proportional change in concentration, which is compensated by a linear circuit to linearize the signal. After microcomputer processing and logical analysis, various control signals are output. The alarm emits sound and light alarm signals and can display the gas concentration or activate external intermodal equipment (such as exhaust fans, solenoid valves). The detector's ability to sense gas leaks at the installation site is usually alarm concentration below 25% of the lower explosion limit of various gases, natural gas is 0.1% -1.0%, artificial gas is 0.1% -0.5%, and liquefied petroleum gas is 0.1. % -0.5%.