What is the detection range of the combustible gas detector?
The detection range of combustible gas detectors is mostly within the range of 0-100% LEL. If the leakage concentration of combustible gas detected is greater than 25% LEL and less than 50% LEL, the combustible gas detector will emit a low alarm. When the concentration of combustible gas leakage is detected to be greater than 50% LEL, the combustible gas detector will emit a high-frequency sound and light alarm warning signal to enhance the control of combustible gases in the environment by on-site operators, thus achieving safe and efficient production.
What is the range of the combustible gas detector
The combustible gas detector can detect many combustible gases, such as natural gas, liquefied gas, coal gas, ethane, acetylene, butane, n-butane, isobutane, pentane, hexane, halogenated hydrocarbons (chloromethane, methylene chloride, trichloroethane, vinyl chloride), alcohols (methanol, ethanol, propanol), ethers, ketones (butanone, acetone), hydrogen, toluene, and other compounds (gasoline, industrial solvents, paint, diluents, coolants, dry cleaning liquids, methyl acetate, etc.).
What is LEL?
LEL refers to the lower explosive limit of a gas. When the vapor (or combustible dust) of a combustible gas or liquid mixes with air and reaches a certain concentration, it will explode when encountering a fire source. This concentration range within which an explosion can occur is called the explosive limit. The lower explosive limit of each gas is different.
The explosion limit of hydrogen gas is as follows: the lower limit is 4.0%, the upper limit is 74.2%, and it can cause combustion and explosion when encountering air and open flames. 4.0% is the minimum volume fraction for hydrogen gas to explode when encountering an open flame. If it is less than this bottom line, it will not ignite and will not explode when encountering an open flame. 74.2% is the highest limit (or upper limit) of the highest volume fraction. When the volume fraction exceeds this upper limit, it can be safely burned in the presence of air and open flames, and there will be no explosion. In short, a range with a volume fraction below or below the explosion limit will not explode when exposed to open flames.
Catalytic combustion gas detectors are used to monitor changes in combustible gases in the surrounding air from 0 to 100% LEL. This sensor adopts catalytic combustion technology and can be replaced on-site. Catalytic combustion sensors have a sensitive response to a wide variety of combustible gases. This technology has universal applicability to combustible gases.
Combustible gas detector is a gas detector installed and used in industrial and civil buildings that responds to single or multiple combustible gas concentrations. The most commonly used combustible gas detectors in daily life are catalytic combustible gas detectors and semi conductive combustible gas detectors.
Semiconductive combustible gas detectors are mainly used in places such as restaurants, hotels, and home production rooms that use gas, natural gas, and liquefied gas. Catalytic combustible gas detectors are mainly used in industrial places that emit combustible gases and vapors.
