As an important security facility, the alarm value of the gas alarm is generally divided into one level and two levels. Today we are mainly talking about why the natural gas alarm should be set up with two-level alarms? What are the benefits?

The first-level alarm device can start the solenoid valve or exhaust fan when the equipment alarms. The second-level alarm device can realize dual-tube monitoring, that is, when the lpg gas detector detects that the natural gas concentration exceeds the first-level alarm value, it indicates that there is a natural gas leak, but the natural gas leak is not much, so the exhaust fan can be started during the first-level alarm to reduce the natural gas concentration and ensure environmental safety.

When the gas concentration reaches the second-level alarm value, it means that a large amount of gas has leaked. At this time, using an exhaust fan to disperse it can no longer solve the problem, so the solenoid valve is started during the second-level alarm to directly cut off the gas pipeline. Afterwards, apply soapy water to the natural gas pipeline. The place where bubbles are generated is the natural gas leak point. After the leak is found, remedial measures can be taken.

Liquefied petroleum gas is a flammable substance. When the content in the air reaches a certain concentration range, it will explode when exposed to open flames. Gaseous liquefied petroleum is about 1.5 times heavier than air. The explosion range of the gas-air mixture is 1.7%~9.7%.