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Application of gas sensor in the field of industrial safety

2020-01-10 Source: admin
Gas sensors have the largest sales volume in the field of industrial safety, accounting for about 60% of the output value. Among them, the gas principle of electrochemical principle is used to detect gas concentration.

Electrochemical sensing technology began in the early 1950s. Today, it is still the most popular way to detect oxygen and toxic gases. The electrochemical gas sensor works by reacting with the measured gas and generating an electrical signal proportional to the gas concentration. Like any other technology, it has the advantages of high sensitivity, good selectivity and good linearity of low concentration output when using electrochemical sensors to detect gases. At the same time. It performs well in the extreme environment of low temperature and low humidity and high temperature and high humidity. It is mainly used in petrochemical and environmental protection coal mining industries which need to measure and analyze oxygen and toxic and harmful gases.

There are many classifications of industrial safety. They are used in situations where gas explosion, suffocation or poisoning may occur. These include: coal mines, natural gas, steel plants, oil mining, air separation, petrochemical, coal chemical and ammonia chemical industries. Among them, the demand of coal industry for gas detection and alarm is still very high. The energy provided by the coal industry is mainly used in power plants, chemical industry, steel, transportation, boilers and other industries, which once accounted for 80% of China's energy structure. With the rapid development of economy, although the proportion of energy application has decreased, the total demand has increased year by year. It can be said that the coal industry has penetrated into all walks of life of our national team. The industry mainly includes power generation, metallurgy, manufacturing, boiler, transportation, agriculture and other parts.

In order to ensure the safety of production, processing, transportation and use, it is necessary to detect and monitor the dangerous gases in every link, such as explosion, toxic gas leakage and explosion-proof. At the same time, the relevant departments of the state have formulated the corresponding monitoring standards, and the office of national coal mine safety standards and the corresponding testing institutions have also made corresponding standard declaration and implementation, product acceptance and inspection.

Gas safety test runs through the whole process of coal production, processing, transportation and use, such as gas, carbon monoxide (CO), hydrogen sulfide (H2S), carbon dioxide (CO2), sulfur dioxide (SO2), oxygen, etc. Operate during production. The detection range includes sulfur dioxide, hydrogen sulfide, carbon monoxide, chlorine, ammonia and other gases in coke oven industry, coal gasification synthetic ammonia, coal to synthetic oil, coal chemical industry and coal and carbon processing industries.
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