氧气检测仪校准要注意哪些方面?
氧气检测仪是用来检测被测环境中氧气的浓度,防止氧气浓度过高引起爆炸事故。在检测时,氧气检测仪可以通过信号转换及设置的报警点来实现报警功能。但是,我们在使用氧气检测仪前或者是使用了比较久一段时间后,都是需要对它进行校准,只有这样才可以更加地确保其数据的准确性。那么您知道氧气检测仪校准要注意哪些方面吗?下面逸云天小编为您介绍:

氧气检测仪校准要注意以下方面:
1、保持氧气检测仪校准环境的稳定,避免温湿度、气压、风速等发生剧烈变化的影响。
2、氧气检测仪的校准采用标准气样比对校准法,其各点误差不得超过检定规程的规定值。
3、通入标准气体的流量大小一定要严格按照说明书要求,流量过大或过小都会影响检测结果,造成测量误差。
4、如长期放置未使用的企业检测仪,应先通入3%标准气体对其催化元件激活后,再通入1%的标准气体进行调校,否则各点误差均不在合格范围内,造成校准失败。
5、应选用氧气检测仪本身的标气罩,如选用不合理的标气罩,会出现数值不稳不准确的现象。
6、对氧气检测报警点进行校准时,要同时观察声光报警信号,不能报警或报警声光强度低的即为不合格仪器。
综上所述,就是氧气检测仪校准要注意一些方面。为了保证氧气检测的准确测量,定期校准是非常关键的工作,原则上一年标定一次,也可以半年标定一次,具体的校准时间,大家可以根据实际的情况来进行选择。
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