The TX-100 Tunable Laser Gas Analyzer simultaneously measures the hydrogen chloride and H2O of the stack gas. Since the single probe method is applied in the optical system of the analyser, TX-100 can be mounted from one side of the stack. Through this way of installation, several advantages are brought such as excellent performance caused by stabilization of optical axis and easy replacement for an existing analyser as well as achievement of low cost of ownership. In addition, HORIBA’s unique calibration function enables calibration work without removing the TX-100 from the stack which makes maintenance simpler. TX-100 is suitable for controlling and monitoring of HCl in various industries including refuse incineration facilities, petrochemical plants, or cement factories, and similar.