In many industrial production processes, in order to better protect the personal safety of corporate property and employees, combustible gas alarms are installed to detect the operating environment in real time. When the concentration of the measured gas exceeds the preset value, the combustible gas alarm will send out an audible and visual alarm signal to remind the staff to take emergency measures. In the process of using combustible gas alarm, we usually involve two words: low report and high report. do you know what low report and high report mean in combustible gas alarm ? The following is a brief introduction by yi yun Tian:

combustible gas alarm underreport:

The low alarm value of the combustible gas alarm refers to the low alarm value of the equipment. The measuring range of the combustible gas alarm is 0~100 LEL, according to national regulations, the alarm is generally set between 15% LEL and 25% LEL.

Combustible Gas Alarm Highlight:

The high alarm value of the combustible gas alarm refers to the high alarm value of the equipment, and the high alarm is generally set to 50% LEL alarm. Among them, LEL refers to the lower explosion limit of combustible gas. The lower explosion limit is the lower explosion limit of combustible gas. When combustible gas is mixed with air, the lowest explosion concentration occurs at the ignition point. The lower explosion limit is divided into 100%, and the 1 part is 1% LEL. ppm =%LEL x LEL(vol%)* 10000PPM.

to sum up, it is the meaning of low report and high report in combustible gas alarm. at a certain temperature, combustible gas catalyzes combustion on its surface, combustion increases the resistance temperature, and the resistance change obtains the function of combustible gas concentration, generally used to detect combustible gas. And we through the installation of combustible gas alarm, set low alarm value, high alarm value, can be well applied to prevent combustible gas may bring harm, so when the concentration of combustible gas in the environment reaches a certain value, you can appear sound, light alarm signal, to remind personnel to take relevant safety measures.