Online self-calibration technique for trace gas analyzer based on tunable diode laser absorption spectroscopy

Yong Zhu; Jun Zhang; Junqing Chen; Chaoyang Zhang; Ke Xie; Wei Wei

doi:10.1117/12.807116

2 February 2009 Online self-calibration technique for trace gas analyzer based on tunable diode laser absorption spectroscopy

Yong Zhu, Jun Zhang, Junqing Chen, Chaoyang Zhang, Ke Xie, Wei Wei

Author Affiliations +

Proceedings Volume 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications; 71602S (2009) https://doi.org/10.1117/12.807116
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

Abstract

To compensate the measurement error induced by temperature and pressure variation in a tunable diode laser absorption spectroscopy (TDLAS) system, an online self-calibration technique is introduced. More specifically, a reference gas cell filled with known proportion target gas is placed on site, surrounded by working gas to be measured. Thereby, the temperature and pressure inside the reference cell are equal to the gas outside. The TDLAS system acquires the absorption spectrum of the reference gas cell and the working gas synchronously. And the concentration of the trace gas in working gas can be easily obtained by calculating the absorption intensity proportion of both absorption spectrums without considering the affection of temperature and pressure. The principle, design, and experiment of this technique are presented in this paper.

Citation Download Citation

Yong Zhu, Jun Zhang, Junqing Chen, Chaoyang Zhang, Ke Xie, and Wei Wei "Online self-calibration technique for trace gas analyzer based on tunable diode laser absorption spectroscopy", Proc. SPIE 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, 71602S (2 February 2009); https://doi.org/10.1117/12.807116

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available