What gases does an lel sensor detect?
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What is LEL gas detector?
LEL refers to the lowest content of combustible gases that can usually cause an explosion is called the lower explosive limit LowExplosion-Level (referred to as LEL), many of our partners are also used to call the EX gas detector, or Combustible gas monitor. However, pay attention to understand that the LEL gas detector in LEL it is not a unit, refers to a value. A numerical value, generally refers to the volume of explosive gases in the air than the LEL this value is not detected by the instrument, it is the national standard for different gases have different values.
LEL sensor detector alarm setting instructions
Gas detector LEL value shows 100% attention to understanding is not the concentration of combustible gases to reach 100% of the volume of gas, but to reach 100% of the LEL, the concentration of combustible gases is too low or too high, it is not dangerous, it is only mixed with air to form a mixture to form a certain proportion of the mixture will burn or explode. Therefore, in carrying out the measurement of combustible gases, LEL gas detector low alarm value are set at the lower limit of the explosion of 25% LEL, high alarm value is set at the lower limit of the explosion of 50% LEL.
LEL gas detector unit conversion
PPM to LEL unit conversion formula:
ppm=%LEL×LEL(%VOL)*100
Example 1: Assuming 35%LEL of methane, which has a LEL of 2%VOL, the conversion formula: ppm=35(%LEL)*2(%VOL)*100=7000ppm methane. %LEL=ppm/(LEL(%VOL)*100)
Example 2: Assuming 300 ppm ethane, which has an LEL of 1.2 vol%, the conversion formula: %LEL=300ppm/(1.2%VOL*100)=2.5%LEL ethane.
What gases does an lel sensor detect?
LEL sensor detector can generally detect natural gas (methane), liquefied gas, isobutane, propane, gas, hydrogen, acetylene, pentane, acetylene, alkenes, alcohol, acetone, toluene, alcohols, hydrocarbons, butane, dichloroethane, dichloromethane, dichloropropane, dichloropropylene, ethanol, ethylene oxide, n-hexane, n-nonane, n-octane, n-pentane, propanol, propylene and other gases.
Areas of application
LEL gas detector is widely used in printing, spraying and painting, pharmaceuticals, rubber, plastics, printing and dyeing car, landfill, mold factory, chemical industry, machining, coke, coal mine, underground tunnels and other scenes.
How to build an Air quality for schools monitoring system?
The construction of an Air quality for schools monitoring system is a comprehensive project, which involves not only the selection and application of technology, but also the consideration of the actual needs and conditions of the school.
Stationary combustible toxic gas monitor
Stationary combustible toxic gas monitors detect gas concentrations in the air by means of built-in sensors. These sensors usually use the principles of catalytic combustion, electrochemistry or photoionization to detect the gas.
How do air purifiers detect air quality?
Air purifiers are electrical devices that can purify indoor air, mainly used to remove indoor dust, bacteria, viruses, odor, and other pollutants to improve indoor air quality.
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How to monitor toxic and hazardous gases?
In chemical enterprises, there are often leaks, volatilisation or a variety of other causes of combustible and toxic gases, all of which are called hazardous gases.
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Can a smoke alarm detect a gas leak
Smoke alarm detect cannot detect a gas leak. This is because smoke detectors mainly detect smoke, not gas.