What is the effective monitoring range of hydrogen gas detector?
Hydrogen alarm is widely used in petroleum, chemical industry, metallurgy, aerospace, light industry and other fields. As a safety device, hydrogen detector can play a role in detection and early warning only if it is installed correctly and reasonably. According to the relevant national standards, the detection diameter of hydrogen combustible gas alarm in poorly ventilated places should be less than 5 meters, and the detection diameter of hydrogen detector in open places should be 10 meters.
Hydrogen is a kind of high-quality energy, which is widely used in all walks of life. In agriculture, it can improve seed germination rate, regulate flowering period, improve stress resistance, improve pest resistance, improve agricultural products quality, and keep products fresh. In the chemical field, it is one of the raw materials for synthetic ammonia and methanol processes; It can be used in petroleum desulfurization, refining and catalytic cracking in oil refining. Electronic industry can be used as protective gas, and metallurgical industry can be used as protective gas and reducing agent. The combustion heat value of hydrogen is very high, and it will not produce harmful substances. As a clean energy, it has a very good application in the aerospace field. In recent years, hydrogen has also developed rapidly in the fields of beauty and medicine.
Although hydrogen will not cause poisoning, it is very easy to burn and explode, causing fire and other dangers. It is very important to use the hydrogen alarm reasonably and correctly. According to GBT50493-2019, the horizontal distance between hydrogen detectors installed in closed factory buildings or places with poor local ventilation and any release source within its coverage should not be more than 5m; The horizontal distance between the hydrogen detector in an open or open workshop and any release source within its coverage should not be more than 10m, and the hydrogen detector should also be installed at the position where hydrogen is easy to accumulate at the highest point of the workshop. In addition, the installation height of the hydrogen alarm is also required. Because the specific gravity of hydrogen and air is much less than 0.8 and lighter than air, the hydrogen alarm should be installed within 2.0m above the release source, and there should be no impact, vibration, strong electromagnetic interference and easy maintenance.
The above is an introduction to the effective monitoring range of the hydrogen gas detector. Hydrogen is used in all walks of life, but because it will burn and explode, it is necessary to install a hydrogen combustible gas alarm at the possible leakage position to detect the concentration change of hydrogen. The explosion range of hydrogen is 4.0%-75.6%, and the explosion range is very wide, so the use of hydrogen detector is particularly important. It can detect the concentration of hydrogen and effectively avoid accidents such as fires caused by hydrogen leakage.
