What is the effective monitoring range of a hydrogen gas detector?
Hydrogen alarms are widely used in petroleum, chemical, metallurgy, aerospace, light industry and other fields. Hydrogen detector as a safety device, correct and reasonable installation can play a role in detection and early warning. According to the relevant national standards, poorly ventilated places in the hydrogen combustible gas alarm should be less than 5 meters in diameter, open-air hydrogen detector detection diameter of 10 meters.
Hydrogen is a high-quality energy, widely used in all walks of life, in agriculture can improve seed germination rate, regulate the flowering period, improve resistance to adversity, improve pest resistance, improve the quality of agricultural products, product preservation and so on. In the chemical industry, it is one of the raw materials for ammonia synthesis and methanol process; in oil refining, it can be used for petroleum desulfurization, refining, catalytic cracking and so on. It can be used as protective gas in electronic industry and as protective gas and reducing agent in metallurgical industry. The combustion calorific value of hydrogen is very high, and will not produce harmful substances, as a clean energy in the aerospace field has very good applications. In recent years, hydrogen has also been rapidly developed in the field of cosmetology and medicine.
Although hydrogen does not cause poisoning, it is very easy to burn and explode, causing fire and other dangers. Reasonable and correct use of hydrogen alarms becomes very important. According to GBT50493-2019, the horizontal distance of hydrogen detectors installed in closed plants or poorly ventilated localities from any release source within their coverage should not be greater than 5m; the horizontal distance of hydrogen detectors in open-air or open-type plants from any release source within their coverage should not be greater than 10m, and hydrogen should be installed in the highest point of the plant at the location where it is easy to accumulate. Hydrogen detector should also be installed at the highest point of the plant where hydrogen is likely to accumulate. 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, lighter than air, so the hydrogen alarm needs to be installed in the release source above the 2.0m, and here there should be no impact, no vibration, no strong electromagnetic interference, easy to maintain.
Above Hydrogen gas detector for the effective monitoring range of the relevant introduction, hydrogen in all walks of life have applications, but because it will burn and explode, the need to install hydrogen combustible gas alarms in the location of possible leaks, detecting changes in the concentration of hydrogen. Hydrogen explosion range of 4.0%-75.6%, the explosion range is very wide, the use of hydrogen detectors is particularly important, it can detect the concentration of hydrogen, effectively avoiding hydrogen leakage caused by fire and other accidents.
