The alarm value of the combustible gas alarm system is set as follows: The default low limit is 25 percent LEL (adjustable from 5 percent LEL to 40 percent LEL); the default high limit is 50 percent LEL (adjustable from 10 percent LEL to 100 percent LEL).
The setting basis is as follows: The measuring range of the combustible gas alarm is 0-100 percent LEL. According to national regulations, the low alarm is generally set to alarm between 15 percent LEL-25 percent LEL.
When the detector has two alarm settings, a low limit and a high limit, the low limit alarm set value should be in the range of 1 percent lel-25 percent lel, and the high limit alarm set value should be 50 percent lel; there is only one alarm For the set value detector, the alarm set value should be in the range of 1 percent lel-25 percent lel.
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