Simultaneous measurement of pressure, temperature, and carbon dioxide concentration using wavelength modulation spectroscopy near 2.7um

Kai Wang V; Wei Rao; Dengcheng Lou; Junling Song; Yajing Jiang

doi:10.1117/12.2590833

18 March 2021 Simultaneous measurement of pressure, temperature, and carbon dioxide concentration using wavelength modulation spectroscopy near 2.7um

Kai Wang V, Wei Rao, Dengcheng Lou, Junling Song, Yajing Jiang

Author Affiliations +

Proceedings Volume 11780, Global Intelligent Industry Conference 2020; 1178021 (2021) https://doi.org/10.1117/12.2590833
Event: Global Intelligent Industry Conference 2020, 2020, Guangzhou, China

Abstract

CO₂ and H₂O are important combustion products of hydrocarbon fuels. This paper uses wavelength modulation spectroscopy (WMS) to simultaneously measure the pressure, temperature and CO₂ component concentration information. Two absorption lines near 2.7um were selected, and the measurement experiment was carried out on the high-temperature furnace. The results showed that the measurement error of the three parameters was within 6% under the conditions of less than 1atm, 300-1200K temperature range and 10% concentration range, which verified the feasibility and accuracy of the method.

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Kai Wang V, Wei Rao, Dengcheng Lou, Junling Song, and Yajing Jiang "Simultaneous measurement of pressure, temperature, and carbon dioxide concentration using wavelength modulation spectroscopy near 2.7um", Proc. SPIE 11780, Global Intelligent Industry Conference 2020, 1178021 (18 March 2021); https://doi.org/10.1117/12.2590833

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