Multi-component gas analyzer based on Fourier transform spectrometer

Li-Bing Ren; Hao-Yun Wei; Yan Li

doi:10.1117/12.885317

28 December 2010 Multi-component gas analyzer based on Fourier transform spectrometer

Li-Bing Ren, Hao-Yun Wei, Yan Li

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75441M (2010) https://doi.org/10.1117/12.885317
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

A multi-component Fourier Transform InfraRed (FTIR) gas analyzer with a low spectral resolution (8cm^-1) is described in this paper. The hardware of this analyzer is consisting of a rugged Fourier Transform Spectrometer (FTS), an uncooled pyroelectric Deuterated L-Alanine TriGlycine Sulfate (DLATGS) detector, a glass body long-path gas cell and relevant sampling devices. The transplantable software and algorithms include the building of spectral library from the free sources such as EPA, NIST, HITRAN etc, identification of spectrum components and a modified classical least square regression with automatic baseline compensation. In order to validate this system, we implemented a continuous on-line experiment using the 55 μmol·mol^-1 methane and 28 μmol·mol^-1 nitrous oxide standard mixtures. The experimental results show this low resolution analyzer has accuracy and robust analysis abilities. The description in this paper is helpful to facilitate the development of a FTIR multi-component gas analyzer.

Citation Download Citation

Li-Bing Ren, Hao-Yun Wei, and Yan Li "Multi-component gas analyzer based on Fourier transform spectrometer", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75441M (28 December 2010); https://doi.org/10.1117/12.885317

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