Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 216, Issue -, Pages 154-160Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2019.03.025
Keywords
Optical gas sensor; Fabry-Perot filter detector; Multi-gas detection
Categories
Funding
- National Key Research and Development Program of China [2017YFA0304203]
- National Natural Science Foundation of China (NSFC) [61622503, 61575113, 61805132, 11434007]
- Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China [IRT_17R70]
- 111 project [D18001]
- Outstanding Innovative Teams of Higher Learning Institutions of Shanxi
- Foundation for Selected Young Scientists Studying Abroad, Sanjin Scholar [2017QNSJXZ-04, 1331KSC]
- Robert Welch Foundation [C0568]
- Dipartimento Interateneo di Fisica di Bari
- THORLABS GmbH, within the joint-research laboratory PolySense
Ask authors/readers for more resources
We demonstrated a versatile and innovative gas sensing system based on a Fabry-Perot (FP) filter detector, which operates in the spectral range from 3.1 to 4.4 mu m (3226-2273 cm(-1)) with a spectral resolution of 20 nm. The developed sensor system can be used to record the entire spectrum by means of a one-time scan or, alternatively, to access selected spectral regions by using the tunable FP filter detector. A multipass cell with an effective path length of 2.5 m was implemented to improve the detection sensitivity. The spectra of methane, formaldehyde and carbon dioxide were simultaneously measured, with detection limits of 200 ppm, 900 ppm and 20 ppm, respectively. A seven-day continuous measurement for indoor carbon dioxide gas was carried out demonstrating the stability and robustness of the reported sensor system. (C) 2019 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available