GS-GTN02 ammonia on-line monitoring system is a set of real-time on-line monitoring system for ammonia escape concentration in industrial denitration process.It uses tunable diode laser absorption spectorscopy technology (TDLAS), combined with advanced optomechanics design, computer software and hardware technology to improve dust resistance and measurement accuracy. It can meet the needs of denitrification process monitoring and tail discharge monitoring, and provide reliable support for the optimization and control of industrial denitrification processes.