The combustible gas leakage alarm is a gas leakage detection and alarm instrument. When combustible gas leaks in an industrial environment, when the combustible gas leak alarm detects that the gas concentration reaches the critical point set by the explosion alarm, the combustible gas leak alarm will send out an alarm signal to remind the worker to take safety measures to prevent combustible gas leakage The alarm is equivalent to that of an automatic fire extinguisher, which can drive the exhaust, cut off, and sprinkler systems to prevent explosions, fires, and poisoning accidents, thereby ensuring safe production.
We often see that the measurement range standard of flammable gas alarms (gas detectors) such as natural gas alarms and liquefied petroleum gas alarms is 0-100%LEL, so what does 0-100%LEL mean? When the concentration of combustible gas in the air reaches its lower explosion limit, we call the explosion hazard of the combustible gas environment in this place 100%, that is, 100 %LEL. If the combustible gas content reaches only 10% of its lower explosion limit, we call the explosion hazard of combustible gas in this place at this time 10% LEL; the monitoring of combustible gas in the ambient air often directly gives the environmental hazard of combustible gas degree, that is, the percentage of the content of the combustible gas in the air and its lower explosion limit: [%LEL]; therefore, this kind of monitoring is sometimes called "explosion detection", and the detection equipment used is also called "explosion detection instrument".
According to the National Standard GB15322 "Combustible Gas Detector" of the People's Republic of China, the concentration setting range should be: the lower limit is 1%LEL-25%LEL, and the upper limit is 50%LEL. Xi'an Huafan Technology Co., Ltd.'s combustible gas factory alarm points are first-level 25% LEL and second-level 50% LEL.
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