靈敏度是反映報警器性能的重要指標，一般按可燃氣體的爆炸下限（可燃氣體與空氣混合發(fā)生爆炸的低濃度）來設定，其低限報警設定值應在50%LEL左右，僅有一個報警設定值時應符合低限報警設定值。監(jiān)測不同的燃氣，報警器的靈敏度設定值是不一樣的，所以在選用時，必須搞清楚報警器安裝場所使用的是何種燃氣，再選用有針對性的報警器。目前由于燃氣器具燃燒產(chǎn)生的廢氣中含有CO，而CO對人體的危害程度極大。所以家庭用戶在選用報警器時，好能選用又探測器的報警器，既能對燃氣泄漏報警器，也能對CO超標報警，起到雙保險的作用Sensitivity is the most important index to reflect the performance of the alarm, according to the explosion limit of flammable gas (the lowest concentration of combustible gas and air mixture explosion) to set the lower limit alarm set value should be about 50%LEL, only an alarm set value should be consistent with the low limit alarm setpoint. Monitoring the sensitivity settings of different gas and alarm is different. Therefore, when selecting, we must find out what kind of gas is used in the installation area of the annunciator, and select the targeted alarm. At present, CO is contained in the exhaust gas produced by the combustion of gas appliances, and the harm of CO to the human body is great. Therefore, when family users choose the alarm, they are better able to choose the detector of the detector, which can play a double insurance role for the gas leakage alarm and the CO over standard alarm.