Combustible gas detector is the 1 kind of gas detection equipment to detect the concentration of combustible gas leakage. It mainly uses sensors to detect the type, composition and content of combustible gas in the environment. However, many users do not know the alarm threshold of the combustible gas detector during use. What is the alarm threshold of combustible gas detector ? The following is a brief introduction to this problem.

The alarm threshold of the combustible gas detector is set according to the lower explosive limit (LEL) of the gas, and is usually divided into two levels of alarm:

1. general setting range

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Low limit alarm value (level 1 alarm):

is usually set to 25% LEL, but this value can be adjusted from 5% LEL to 40% LEL.

there are also some regulations or occasions, the primary alarm threshold is set to not more than 25% LEL, and the minimum is not less than 5% LEL.

For some specific areas by area, the primary alarm threshold may be set to (520)%LEL or (525)%LEL.

high limit alarm value (secondary alarm):

defaults to 50% LEL, its adjustable range is between 10% LEL and 100 LEL.

The secondary alarm threshold usually does not exceed 50% LEL.

2. special settings