The TK-1100 ammonia escape online monitoring system produced by Shandong Xinze Instrument Co., Ltd. adopts high-temperature heat tracing extraction technology+TDLAS technology (tunable semiconductor laser spectral absorption technology) to continuously monitor the escape ammonia during denitrification process. The system consists of three parts: sampling and transmission unit, pretreatment and control unit, and analysis unit. It is mainly used for gas emission monitoring and process control in many industrial fields, such as coal-fired power plants, aluminum plants, steel plants, smelters, waste to energy plants, cement and chemical plants, glass plants, etc.