氢气报警器报警值设定标准是多少?
相信大家都知道,氢气报警器主要用于监测环境中氢气的浓度,当浓度达到一定阈值时,报警器会发出警报。对于氢气这种易燃易爆的气体,其报警值的设定需要特别注意。如果报警值设得太低,检测器本身的精度可能达不到,有可能会出现误报警的情况。那么您知道氢气报警器报警值设定标准是多少吗?下面逸云天电子小编为您介绍:

氢气报警器的报警值设定标准:
一级报警值应小于或等于25%LEL,即氢气的爆炸下限(LEL)的25%;二级报警值应小于或等于50%LEL,即氢气的爆炸下限(LEL)的50%。这些设定值是基于《GBT 50493-2019石油化工可燃气体和有毒气体检测报警设计标准(正式版)》的规定。
氢气报警器测量范围在3%LEL~100%LEL之间的探测器,其量程上限应为100%LEL,低限报警设定值 应在5%LEL~25%LEL范围,如具有高限报警设定值,应为50%LEL。低限报警设定值如可 调,应在5%LEL~25%LEL范围内可调。
当环境中H2可燃性气体浓度到达或超越预制报警时,控制器当即发出声光报警氢气报警器,以提示及时采纳安全措施,并联动排风机或其他设备,避免发生爆破。
综上所述,我们可以看出,氢气报警器的报警值设定标准在出厂时,一般默认低报25%LEL,高报50%LE。氢气报警器关系着氢气使用的安全。有氢气存在的地方就有或许发生氢气爆破事故,无论是这种或许性大不大,可是我们有必要要做好安全预防,避免工作环境中氢气浓度过高,到达氢气爆破下限引发火灾爆破事故甚至人员伤亡等。
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