Abstract：HCL, with the character of strong erosion and toxicity, is a kind of chemical material of vital importance. So measuring the HCL in-situ can not only optimize its production process, but also be necessary to reduce the environment pollution. TDLAS(tunable diode laser absorption spectroscopy)technology, and owning the advantage of the tunability and narrow line width of the diode laser, this method can relatively easily select the absorption line of the detected gas without the interference from other gas, thus making the rapid and accurate HCL measurement possible. In the present paper, the HCL measurement system and the implemented experiment are introduced. The impact of the temperature on the measurement as well as the temperature compensation method is emphasized. The final experimental results validated the rationality of the empirical equation and therefore the improvement of the accuracy and feasibility of the TDLAS technology .The system, whose detection limitation reaches 2 ppm, can satisfy the needs of industrial in-sit measurement.
Key words：TDLAS;Industrial process control;HCL concentration online monitoring;Temperature correction coefficient of HCL concentration
束小文，张玉钧*，阚瑞峰，崔益本，何 莹，张 帅，耿 辉，刘文清 . 基于TDLAS技术的HCl气体在线探测温度补偿方法研究 [J]. 光谱学与光谱分析, 2010, 30(05): 1352-1356.
SHU Xiao-wen, ZHANG Yu-jun*, KAN Rui-feng, CUI Yi-ben, HE Ying, ZHANG Shuai, GENG Hui, LIU Wen-qing . An Investigation of Temperature Compensation of HCL Gas Online Monitoring Based on TDLAS Method. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(05): 1352-1356.
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