The hazards of combustible gases have long been a major problem in public safety areas. Every time when the news exposes the explosion of combustible gas in some factories, there will always be some casualties, all of which are closely related to the combustible gas detector. In order to effectively prevent the occurrence of these accidents, we all need to install the combustible gas detector and set the alarm value range. Do you know the normal range of combustible gas detector ? The following is an introduction by Yi Yuntian:

Normal range of alarm values of combustible gas detector:

The low limit defaults to 25% LEL(5% LEL ~ 40% LEL adjustable)

The high limit defaults 50% LEL(10% LEL ~ 100 LEL adjustable)

In general, the primary alarm of combustible gas detector is less than or equal to 25% LEL, the secondary alarm is less than or equal to 50% LEL, and the deviation of alarm error setting value is within 25%.

is set as follows:

combustible gas detector has a measuring range of 0-100% LEL. according to national regulations, underreporting is generally set between 15% and LEL-25 LEL for alarm, and overreporting is generally set to 50% LEL for alarm, most of the low alarm points of the current combustible gas detectors are set to 25% LEL. The 100%LEL here refers to the explosion limit value of the gas, that is, when the combustible gas alarm shows 100%LEL, the explosion limit of the combustible gas has just been reached.

In summary, it is the normal range of the combustible gas detector alarm value. For the combustible gas detector currently in use, the alarm point must be set for the combustible gas detector before installation. A small amount of gas leakage in the air to form a lower concentration, will not cause fire, explosion accidents, not too much harm, so the installation of combustible gas detector is also very important, so that we can take preventive measures in advance.