Common terms for gas detectors
Release time:2023-02-08   Number:507
The gas detector manufactured by Taizhou Hanyao Electronic Technology Co., Ltd. can detect various gases such as hydrogen sulfide, carbon monoxide, nitrogen dioxide, sulfur dioxide, oxygen, ammonia, phosphine, hydrogen cyanide, chlorine, chlorine dioxide, ozone and combustible gas. It is widely used in various fields such as petrochemical, coal, metallurgy, chemical, municipal gas and environmental monitoring. Able to meet the measurement requirements in special occasions; It can detect gas concentration or leakage in tunnels, pipelines, tanks and confined spaces.


Common terms of gas detector:

Standard gas: gas whose composition, concentration and accuracy are known.
Zero gas (fresh air): clean air or nitrogen without the measured gas or other interfering gas.
Direct harm concentration (IDLH): refers to the concentration of air pollutants in the environment reaching a certain dangerous level, such as the concentration that can cause fatal or permanent damage to health, or make people lose the ability to escape immediately.
Explosion range The concentration range of explosion caused by ignition in the mixture of combustible gas and air. That is, the concentration range between the upper and lower explosion limits.
Maximum allowable concentration (MAC): refers to the concentration of toxic chemicals that should not be exceeded at any time within a working day at the working place.
Time-weighted average allowable concentration (TWA): refers to the average allowable exposure level of 8-hour working days specified with time as the weight.
Short-term exposure allowable concentration (STEL): refers to the 15-minute time-weighted average allowable exposure concentration that should not be exceeded for any exposure within a working day.
Upper explosion limit (UEL): the maximum concentration value of explosion caused by the mixture of combustible gas and air.
Lower explosive limit (LEL): the lowest concentration value of explosion caused by combustible gas mixing with air and ignition.