What is the measuring range of the combustible gas detector?
The detection range of the combustible gas detector is mostly within 0-100% LEL. If the detected combustible gas leakage concentration is greater than 25% LEL and less than 50% LEL, the combustible gas detector will issue a low alarm. For example, when the concentration of combustible gas leakage is greater than 50% LEL, the combustible gas detector will issue a high-frequency sound and light alarm warning signal to improve the on-site operator's control of combustible gas in the environment, so as to achieve safe and efficient production.
Shenzhen Liye: 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, paints, thinners , coolant, dry cleaning fluid, methyl acetate, etc.).
What is LEL?
LEL refers to the lower explosion limit of the gas. When the vapor of combustible gas, combustible liquid (or combustible dust) is mixed with air and reaches a certain concentration, it will explode when it encounters a fire source. This concentration range that can explode is called the explosion limit. . The lower explosive limit of each gas is different.
For example, the explosion limit of hydrogen: the lower limit is 4.0%, the upper limit is 74.2%, and it will burn and explode when it encounters air and open flames. 4.0% is the minimum volume fraction of hydrogen that can explode when encountering an open flame. If it is less than this bottom line, it will not burn and explode if it encounters an open flame. 74.2% is the upper limit (or upper limit) of the highest volume fraction. When the volume fraction is higher than this upper limit, it can burn safely in the presence of air and open flame, and will not explode. In short, if the volume fraction is lower or lower than the explosion limit, no explosion will occur in case of an open flame.
Catalytic combustion gas detector is used to monitor the change of combustible gas in the surrounding air from 0 to 100% LEL. The sensor uses catalytic combustion technology and the sensor can be replaced in the field. Catalytic combustion sensors are sensitive to a wide variety of flammable gases. This technology has general applicability to flammable gases.
The combustible gas detector is a gas detector installed and used in industrial and civil buildings that responds to the concentration of single or multiple combustible gases. The most commonly used combustible gas detectors are catalytic combustible gas detectors and semiconductor combustible gas detectors.
The places where gas, natural gas and liquefied gas are used in restaurants, hotels, and home production rooms mainly use semiconductor-type combustible gas detectors, and industrial places that emit combustible gas and combustible steam mainly use catalytic-type combustible gas detectors.
The above is the introduction of "what is the range of the combustible gas detector" provided by Shenzhen Liye Xiaobian. I hope it will be helpful for you to understand the combustible gas detector! Regular cleaning and maintenance of the combustible gas detector is an important task to prevent the failure of the combustible gas detector.
