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PSGM-1-D-AGS (CEMS-L-IS) is a flameproof tunable laser gas analyzer for industrial online analysis and environmental on-line monitoring, which can in-situ analyze O2, CO, NH3, CO2, CH4, H2O, HCl, HF and other gases in various complex conditions. It consists of transmitter, receiver and connection box.

The transmitter drives the tunable diode to emit laser of certain wavelengths, which passes through the environment to be measured, then reaches the receiver. The receiver performs photoelectricity conversion, signal processing and spectrum data analysis to obtain the measuring result. The connection box contains I/O interface, making the connection of power cable and signal cable convenient.