The flammable gas alarm (referred to as the alarm) is a device for preventing the leakage alarm function of harmful toxic, flammable and explosive gases during production and use. In actual use, the alarm sets the lower explosion limit (such as 20% LEL) as the alarm point. Once the leak occurs, the gas concentration reaches the lower explosion limit (alarm point). The alarm will immediately alarm and disconnect the power supply, and at the same time, open the ventilation system. Enable personnel to handle the danger within a certain period of time. The reliability of the alarm during use will directly affect serious problems that endanger people's lives, property safety and pollution of the natural environment.
Since the alarm uses a catalytic fuel type sensor, the sensitivity of the sensor naturally drops by 10% to 30% per year under normal use, and its life span is 2 to 5 years. If the sensitivity of the alarm sensor drops and the leaked gas concentration reaches the lower explosion limit and fails to alarm in time, there is a danger of explosion. Therefore, the alarm needs to be periodically verified every year to ensure the accuracy and reliability of its performance and magnitude.
In view of this, if the alarms used by enterprises do not carry out annual check-ups, the inspiration will be reduced and it looks normal, but in fact, serious accidents have been left behind. In the event of a leak, the consequences are unimaginable.
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