Leakage of combustible gas often causes safety accidents. At this time, a combustible gas sensor is needed to detect combustible gas to ensure safety.
When will combustible gas explode
Combustible gas is a state of combustible material. It means that it can be uniformly mixed with air (or oxygen) within a certain concentration range to form a premixed gas. It will explode if it encounters a fire source. A gas that releases a lot of energy during combustion.
When the combustible gas concentration is lower than LEL (low explosive limit) (insufficient combustible gas concentration) . And its concentration is higher than UEL (highest explosive limit) (oxygen deficiency), there will be no explosion. The LEL and UEL of different combustible gases are different.
What is the role of combustible gas sensor
The combustible gas monitoring and alarm system is mainly for real-time measurement of the abnormal increase in the concentration of combustible gas. Display the concentration change and give an alarm. It is composed of combustible gas sensor and control card according to the working principle of combustible gas sensor. A flammable gas concentration monitoring and alarm system is made to monitor the gas concentration changes in real time, display and alarm when the limit is exceeded. And this system is applied to the crude oil storage tank fire and combustible gas alarm system.
What are the application fields of combustible gas alarm
(1) The catering industry, boiler rooms, gas filling stations, and gas stations all detect combustible gas (combustible gas-methane, liquefied gas-propane, gasoline, diesel);
(2) Sewage treatment plants, sludge treatment plants, detection of hydrogen sulfide (H2S), ammonia (NH3), and combustible gas (CH4);
(3) Detection of chlorine gas (CL2) and chlorine dioxide (CLO2) in waterworks; 4. Detection of carbon monoxide (CO) and combustible gas (CH4, H2) in the iron and steel metallurgical industry;
(4) The paint factory (workshop, warehouse) detects combustible gases (benzene, toluene, xylene, etc.);
(5) The spraying plants and paint booths detect combustible gases (volatile gases such as benzene, toluene, xylene, etc.). Generally using high-temperature combustible gas detectors;
(6) Petroleum and chemical companies are relatively complex, and basically all have combustible gas, and the type of toxic gas is uncertain. Non-coal mines (such as non-ferrous metal mines, iron ore, molybdenum ore, etc.) generally use portable four-in-one, or detect carbon monoxide (CO), nitric oxide (NO), oxygen (O2);
(7) General detection of combustible gas (methane CH4), hydrogen sulfide (H2S), carbon monoxide (CO), oxygen (O2). fixed and portable four-in-one for power, communication, etc.;
(8) In general, combustible gas and oxygen are tested on ships and ship repairing plants.