Cross response refer to other gas sensor in measuring the gas characteristics of the gas in response......
Range is the range of gas detector can work normally. Combustible gas, for example, the range of 0-100% LEL, usually H2S in the conventional range of 0-100 parts per million.
Commonly used gas detector has a catalytic combustion type and semiconductor type, infrared type, electric chemical formula, photoionization detection principle (PID) type, etc. Catalytic combustion type sensor using catalytic combustion reaction of combustible gas, make the internal coil heating up, cause the resistance changes to detect gas concentration.....
Gas concentration have mass concentration and the volume concentration of two kinds of representation. Gas detection instrument is measuring the volume of a gas concentration, commonly used Vol %, PPM and % LEL as concentration detection unit.....
Material will be listed in the table below for the negative effects of catalytic combustion type sensor bead, among them, the easiest way to make the sensor material is silicon compounds of poisoning, while hydrogen sulfide is one of the most common inhibitors.
Certain chemicals come into contact with the catalytic combustion type sensor, can inhibit the activity of catalytic bead in sensor or poisoning, lead to partial or total loss of sensitivity sensor. Poisoning is permanent sensor performance decline, and inhibition can be placed in the clean air for a period of time to recover, but even if the recovery, has a great influence on the sensitivity of the sensor will be. To maintain the best performance of the sensor, should avoid to catalytic combustion type sensor exposure to toxins and inhibitors of environment.
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友链： 翼芯红外传感技术（上海）有限公司 安誉 迪盈精密仪器（上海）由有限公司
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