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对于瓦斯抽放管道中瓦斯浓度的检测,我国目前大部分采用两种方法,一是用高浓度瓦斯检定器,每隔一定时间对管道内甲烷的含量检测记录一次,一是采用化学分析的方法,定期采样分析。这两种方法对管道内甲烷含量的测定虽然比较准确,但费时麻烦,又不能达到连续检测监视和自动记录的要求。
For the gas drainage pipe gas concentration detection, most of our country currently uses two methods, one is the use of high concentrations of gas detector, at regular intervals on the pipeline methane content detection record once, first, the use of chemical analysis methods , Regular sampling and analysis. Although the determination of methane content in the pipeline by these two methods is relatively accurate, it takes a lot of trouble and can not meet the requirements of continuous monitoring, monitoring and automatic recording.