The gas temperature compensation research based on TDLAS technology

DOI

10.2991/ic3me-15.2015.209How to use a DOI?

Keywords

Tunable diode laser absorption spectroscopy(TDLAS); Gas concentration detection; Second harmonic; Temperature compensation

Abstract

Tunable diode laser absorption spectroscopy (TDLAS) technology has the characteristics of high sensitivity, selectivity and rapid response. The tunable and narrow linewidth of semiconductor lasers are used in this technique to realize the rapid and accurate online detection of target gas concentration, through the method of selecting the absorption line of the target gas to exclude the interference from other gas. This paper introduces the system and experiment of gas concentration detection based on TDLAS and studies the influence of temperature on gas measurement. Furthermore, a method of temperature measurement to reduce the error of the concentration measurement is presented in this paper, which uses the second harmonic peak ratio of the target line to measure temperature and compensate temperature in the case of unknown concentration. The final experimental results has validated the rationality of the temperature compensation method and further improved the accuracy of the gas concentration detection based on TDLAS technology.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chenchen Hu
AU  - Xiaowei Chen
AU  - Zhengying Li
PY  - 2015/08
DA  - 2015/08
TI  - The gas temperature compensation research based on TDLAS technology
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 1082
EP  - 1086
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.209
DO  - 10.2991/ic3me-15.2015.209
ID  - Hu2015/08
ER  -