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Proceedings Paper

Gas monitor technology of electrical modulation non-dispersion infrared sensor
Author(s): Yu Chen; Rongxing Guo
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Paper Abstract

Gas concentration signal acquisition of electrical modulation Non-dispersed Infrared (NDIR) sensors has advantages of high measurement accuracy, adapting to wider concentration range, calibrating automatically and so on. Narrow-band interference filter to some kind of gas detection is fixed on the sensor. Gas concentration can be showed by detecting infrared ray's strength. Infrared source, gas room and infrared detector are set in one optical axis for better resolution of gas infrared absorption signal. Some gas concentration detection system can be designed by using NDIR sensor. The measurement accuracy of system is obviously improved by digital filtering, linear interpolation and temperature compensation, etc. Through some literature materials researching, we find NDIR sensing and detection linearity is better, and the detection error is higher, which can be applied in many kinds of gas monitoring instrument.

Paper Details

Date Published: 20 May 2009
PDF: 6 pages
Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72833E (20 May 2009); doi: 10.1117/12.828772
Show Author Affiliations
Yu Chen, Zhengzhou Institute of Aeronautical Industry Management (China)
Rongxing Guo, Zhengzhou Institute of Aeronautical Industry Management (China)


Published in SPIE Proceedings Vol. 7283:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; James C. Wyant; Robert A. Smythe; Hexin Wang, Editor(s)

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