Detection of SO2F2 concentration of SF6 decomposition product in GIS gas chamber based on ICL-TDLAS

Qiang Yao; Xianglian Yan; Shukai He; Rubin Qi; Xintian Li; Xiao-zhe Zeng; Xinghui Wang; Shiling Zhang; Jigang Zi; Yunqi Yue

doi:10.1117/12.2601827

9 October 2021 Detection of SO₂F₂ concentration of SF₆ decomposition product in GIS gas chamber based on ICL-TDLAS

Qiang Yao, Xianglian Yan, Shukai He, Rubin Qi, Xintian Li, Xiao-zhe Zeng, Xinghui Wang, Shiling Zhang, Jigang Zi, Yunqi Yue

Author Affiliations +

Proceedings Volume 11901, Advanced Sensor Systems and Applications XI; 119010Y (2021) https://doi.org/10.1117/12.2601827
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

The corresponding experimental system was designed, and the direct absorption technology based on the principle of tunable laser absorption spectrum of inter-band cascade laser (ICL) was used to detect low concentration of sulfur fluoride (SO₂F₂) gas. The position of 3619 nm is chosen as the measurement spectrum line of SO₂F₂ gas, which can effectively avoid the cross interference of background components. At 35 ℃ of working temperature and 80 mA of current, the inter-band cascade laser emission wavelength can completely cover the absorption spectrum line at 3619 nm at the center of SO₂F₂ gas. The direct absorption spectrum of SO₂F₂ gas after deducting the background absorption is obtained by taking the logarithm of the ratio of the transmitted light intensity to the incident light intensity and the time-frequency conversion of the horizontal axis. The results show that the linear relationship between gas concentration and absorption intensity is good, the fitting coefficient R 2 is 0.997, and the system responsiveness is 0.782 mV/ppm. Three hundred sets of data were collected for 50 min, the relative standard deviation (RSD) was 0.25%, and the system sensitivity was 3.94 ppm. This method can provide a new method for the optical detection of SO₂F₂ gas, and then provide a reliable experimental basis for the detection of SO2F2 concentration of SF₆decomposition product in GIS gas chamber.

Citation Download Citation

Qiang Yao, Xianglian Yan, Shukai He, Rubin Qi, Xintian Li, Xiao-zhe Zeng, Xinghui Wang, Shiling Zhang, Jigang Zi, and Yunqi Yue "Detection of SO₂F₂ concentration of SF₆ decomposition product in GIS gas chamber based on ICL-TDLAS", Proc. SPIE 11901, Advanced Sensor Systems and Applications XI, 119010Y (9 October 2021); https://doi.org/10.1117/12.2601827

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