甲烷标准气为什么不能用井下甲烷混合气稀释配制甲烷标准气是经国家技术监督局批准并授权的单位提供的空气甲烷混合气体。其主要成份是氮气、氧气和甲烷气，主要用于标定、校准甲烷测定仪器仪表，特别是采用催化原理的瓦斯报警器。井下甲烷混合气成份复杂，它含有ＣＯ、Ｃ... Why methane standard gas can not be diluted with downhole methane gas Preparation of methane standard gas is approved by the State Bureau of Technical Supervision and authorized units to provide air methane gas mixture. Its main components are nitrogen, oxygen and methane gas, mainly used for calibration, calibration of methane measurement instrumentation, especially the use of catalytic gas alarm. Downhole methane mixture of complex composition, which contains CO, C ...