These details of the use of combustible gas alarms must be known!

Once the fixed-point installation of the combustible gas alarm is in place, its position is not easy to change. According to the work experience accumulated over the years, the following points should be considered in specific applications.

　　(1) Find out which possible leakage points of the device to be monitored, analyze their leakage pressure, direction and other factors, and draw a distribution map of the probe position, and divide them into three grades of I, II, and III according to the severity of the leakage.

　　(2) According to specific factors such as the airflow direction and wind direction of the location, judge the leakage direction of combustible gas when a large amount of leakage occurs.

　　(3) According to the density of the leaked gas (greater or smaller than air), combined with the air flow trend, a three-dimensional flow trend diagram of the leak is synthesized, and an initial setting point scheme is made at the downstream position of the flow.

　　(4) Study whether the leakage state of the leakage point is a microleak or a jet. If it is a micro leak, the location of the set point should be closer to the leak point. If it is a jet leak, move slightly away from the leak. Based on these conditions, an end point plan is drawn up. In this way, the quantity and variety to be purchased can be estimated.

　　(5) For places with large flammable gas leakage, according to relevant regulations, a detection point should be set every 10-20m apart. For unattended small pump rooms with discontinuous operation, attention should be paid to the possibility of combustible gas leakage, and a Detector should generally be installed at the downwind outlet.

　　(6) For places with hydrogen leakage, the Detector should be installed on the plane above the leakage point.

　　(7) For the medium whose gas density is greater than that of air, the Detector should be installed on the lower plane lower than the leakage point, and pay attention to the characteristics of the surrounding environment. Special attention should be paid to the setting of safety monitoring points for places where flammable gases are easy to accumulate.

　　(8) For the open flammable gas diffusion and escape environment, if there is a lack of good ventilation conditions, it is easy to make the flammable gas content in the air in a certain part approach or reach the lower limit of explosion concentration. These are safety monitoring points that cannot be ignored .