The T1800-N2 composite nitrogen analyzer has data storage and export functions, and can detect 1-6 gases simultaneously. It can be expanded to analyze 18 gases and high-temperature flue gas; The sensor adopts imported high-quality electrochemical, infrared, photoionization, thermal conductivity, catalytic combustion precursor sensors, and the motherboard uses high-performance components with stable performance; Equipped with a 32-bit nanotechnology CPU and advanced data analysis and computation methods; The screen adopts a 3.5-inch high-definition color screen, exquisite APP menu, and excellent visual and user experience. Used for detecting single pure gas, trace gas concentration analysis, high-temperature flue gas analysis, expandable wireless transmission according to demand, cooling and water removal pretreatment system, it is a multifunctional gas analyzer that integrates detection, filtration, cooling and water removal.