What is the magnetic combustible gas detector's measurement range?
Combustible gas detectors are detectors that respond to single or multiple combustible gas concentrations. There are two types of combustible gas detectors: catalytic type and infrared optical type. The catalytic combustible gas detector uses the resistance change of refractory metal platinum wire to measure the concentration of combustible gas. So what is the measuring range of the combustible gas detector?
Measuring range of combustible gas detector:
At present, the standard range of most combustible gas detectors is about 0-100%LEL. When the measured combustible gas leakage concentration is greater than 25%LEL and less than 50%LEL, the instrument may issue a low alarm. If it is necessary to measure flammable leakage gas greater than 50% LEL, it will issue a high-quality sound and light warning, which can improve the control of flammable gas leakage by on-site staff to a certain extent, so as to achieve the purpose of efficient production.
The combustible gas detector can detect many combustible gases, such as natural gas, liquefied petroleum gas, 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, lacquers, thinners , coolant, dry cleaning fluid, methyl acetate, etc.).
What does the LEL unit refer to?
Generally, we use LEL unit to express the lower limit of gas explosion. After the vapor (or combustible dust) released by combustible gas or combustible liquid is mixed with air, an explosion accident can occur when it encounters a fire source, and it is at a concentration where an explosion may occur. The range is called the explosion limit, and different types of gases have different explosion limits.
