Multi Gas Analyzer Industrial Gas Detector With Robust Metal Housing Customizable Sensor For O2 CO CO2 CH4 H2 H2S NH3 Dew Point(DP) CnHm Hydrocarbon Measurement The RL-U500 gas analyzer is a new type of intelligent online gas analyzer developed by our company using high-performance sensors, combined with advanced production processes and new microcomputer technology. The analyzer is based on infrared principle, electrochemical principle, laser principle, micro-flow thermal