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(1) Find out which possible leakage points of the construction equipment to be monitored, analyze the leakage pressure, direction, temperature, humidity distance and other factors, and sketch the distribution map of the probes, and divide them into one, two and three according to the severity of the leakage. Grades.
(2) Grasp the specific factors such as the direction of the airflow and the direction of the wind at which the source may be leaking, and determine the direction of leakage of flammable/toxic gases in the event of a large number of leaks.
(3) Understand the density of the leaked gas (greater than or less than air), combine with the trend of air flow, and create a three-dimensional flow chart of leakage, and make an initial set point plan at the downstream position of the flow.
(4) Clearly the leak at the leak is microleakage or jet-like. In the case of microleakage, the position of the probe should be closer to the leak. If it is a spray-like leak, keep it slightly away from the leak. In the light of these circumstances, a final set-point plan will be drawn up. In this way, the quantity and quality of purchases and the precautions for calibration are required to reduce the failure.
(5) For locations where there is a large flammable/toxic gas leak, a test point should be set at a distance of 10-20 m per related regulations. For unattended, small, non-continuous pumping stations, attention should be given to the possibility of flammable/toxic gas leaks. A detector should normally be installed at the downtake.
(6) For locations with hydrogen leaks, the detector should be installed above the leak point and not too far below the leak point.
(7) For gases with a density greater than air, the detector should be installed below the leak point. Precautions for the installation of flammable/toxic gas alarms (1) There must be no strong electromagnetic field surrounding the alarm that affects the operation of the instrument ( Such as high-power motors, transformers).
(2) The installation height of the alarm should generally be 160-170cm, so that maintenance personnel can carry out routine maintenance.
(3) The alarm is a safety instrument, sound and light display function, and it should be installed in the place where the staff can easily see and hear, such as the workshop duty room, in order to eliminate hidden dangers in time.
(4) The combustible gas alarm probe is mainly a detection element that contacts the combustion gas sensor. The platinum wire coil is coated with aluminum oxide and a binder to form a spherical shape. On the outer surface thereof, platinum, palladium and other rare metals are attached. Therefore, be careful when installing to avoid damaging the probe.
(5) The position of the indoor probe should be different depending on the density of the gas to be measured. When the measured gas density is less than the air density, the probe should be installed 30cm away from the roof and downward; otherwise, the probe should be installed 30cm away from the ground and upward.
(6) Installation of open-air probes The mounting height can be selected based on the density of the gas to be measured. One of the special considerations is that the probe should be installed on the downwind side.
(7) The connection cable of the alarm circuit should be protected by a protective tube. It is best to add a metal hose at the connection of the probe, and pay attention to the explosion-proof grade of the factory.
(8) After installation and commissioning, be sure to install a breathable waterproof cover to prevent rain from entering the damaged probe. 
How to install online/fixed gas alarm?
Gas detection alarms are an important guarantee for safe production. Gas alarms must be strictly in accordance with the relevant regulations during the installation process. Otherwise, they will not only fail to function as a safety monitor, but they will lead to major safety accidents. Here are some points about gases. Alarms are for your reference only.