The normal range of the alarm value of the combustible gas detector
The hazards of combustible gases have always been a major problem in public safety areas. Every time the news exposes the explosion of combustible gas in some factories, there will always be 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 a combustible gas detector and set the alarm value range. So do you know what is the normal range of the alarm value of the combustible gas detector?
The normal range of the alarm value of the combustible gas detector:
The default low limit is 25%LEL (5%LEL～40%LEL is adjustable)
The default high limit is 50%LEL (10%LEL～100%LEL adjustable)
In general, the first-level alarm of the combustible gas detector is less than or equal to 25% LEL, the second-level alarm is less than or equal to 50% LEL, and the deviation of the alarm error setting value is within ±25%.
The setting is based on the following:
The measurement range of the combustible gas detector is 0-100% LEL. According to the national regulations, the low alarm is generally set between 15% LEL and 25% LEL, and the high alarm is generally set to 50% LEL. The current combustible gas detector is large. Some low alarm points are set to 25% LEL. The 100% LEL here refers to the explosion limit value of the gas, that is to say, when the flammable gas alarm displays 100% LEL, the lower explosion limit of the flammable gas has just been reached.
In summary, it is the normal range of the alarm value of the combustible gas detector. For the combustible gas detector in use now, be sure to set the alarm points for the combustible gas detector before installation. A small amount of gas leakage will form a low concentration in the air, which will not cause fire or explosion accidents, and will not cause much harm. Therefore, it is also very important to install a combustible gas detector, so that we can take preventive measures in advance.
