Online carbon dioxide concentration analyzer based on tdlas technology

Abstract

The utility model belongs to the technical field of gas concentration detection, disclose a kind of online carbon dioxide concentration analyzer based on TDLAS technique. It includes box, gas collection module and detection module. Gas collection module is set in box, and gas collection module includes sample gas collection pipe, zero gas collection pipe, standard gas collection pipe and gas path switching piece, and sample gas collection pipe, zero gas collection pipe and standard gas collection pipe are all communicated in gas path switching piece, and gas path switching piece is selectively communicated in sample gas collection pipe, zero gas collection pipe or standard gas collection pipe, to supply sample gas, zero gas or standard gas;Detection module is set in box, and detection module is communicated in the output of gas path switching piece, and detection module includes carbon dioxide laser sensor, and carbon dioxide laser sensor is used to detect carbon dioxide concentration in sample gas. The online carbon dioxide concentration analyzer based on TDLAS technique can realize the direct measurement of high temperature and high humidity gas, and reduce the error, and the precision is high, and the drift is small.

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