According to the characteristics of the gas sensor, the sensors selected on various gas alarms are very particular. Because of the inability to make quantitative measurements, semiconductor sensors are mostly used in home alarms and spot-type alcohol detectors, which is more in line with the fact that such alarms only require qualitative measurements and lower price requirements.
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According to the characteristics of the gas sensor, the sensors selected on various gas alarms are very particular. Because of the inability to make quantitative measurements, semiconductor sensors are mostly used in home alarms and spot-type alcohol detectors, which is more in line with the fact that such alarms only require qualitative measurements and lower price requirements.
Industrial alarms use catalytic combustion sensors and electrochemical sensors because they require quantitative measurements. However, semiconductor sensors were used in the early days, but nowadays, because of the high requirements, almost no manufacturers have used semiconductor sensors. Industrial gas alarms can be classified into point gas detectors and portable gas detectors in terms of usage. Considering the price factor, electrochemical sensors are generally only used in the case of quantitative measurement of toxic gases. For the occasion of the explosion measurement, the catalytic combustion sensor is generally used because of the low requirements.
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