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基于光声光谱的 SOF 和 SOF 气体传感器中的光气室动态吸附。

Optical Gas-Cell Dynamic Adsorption in a Photoacoustic Spectroscopy-Based SOF and SOF Gas Sensor.

机构信息

Scientific Research Institute of Electric Power, Guizhou Power Grid Company Ltd., 251 Jiefang Road Nanming District, Guiyang 550002, China.

出版信息

Sensors (Basel). 2022 Oct 18;22(20):7949. doi: 10.3390/s22207949.

DOI:10.3390/s22207949
PMID:36298300
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9611617/
Abstract

SOF and SOF are the main components from the decomposition of insulation gas SF. Photoacoustic spectroscopy (PAS) has been acknowledged as an accurate sensing technique. Polar material adsorption for SOF and SOF in the photoacoustic gas cell of PAS may affect detection efficiency. In this paper, the optical gas-cell dynamic adsorptions of four different materials and the detection effects on SOF and SOF are theoretically analyzed and experimentally demonstrated. The materials, including grade 304 stainless steel (SUS304), grade 6061 aluminum alloy (Al6061), polyvinylidene difluoride (PVDC), and polytetrafluoroethylene (PTFE), were applied inside the optical gas cell. The results show that, compared with metallic SUS304 and Al6061, plastic PVDC and PTFE would reduce the gas adsorption of SOF and SOF by 10 to 20% and shorten the response time during gas exchange. The complete gas defusing period in the experiment was about 30 s. The maximum variations of the 90% rising time between the different adsorption materials were approximately 3 s for SOF and 6 s for SOF, while the generated photoacoustic magnitudes were identical. This paper explored the material selection for PAS-based gas sensing in practical applications.

摘要

SOF 和 SOF 是绝缘气体 SF 分解的主要成分。光声光谱（PAS）已被公认为一种准确的传感技术。对于 PAS 光声气体池中的 SOF 和 SOF，极性材料的吸附可能会影响检测效率。本文从理论上分析和实验证明了四种不同材料在光声气体池中的光学动态吸附及其对 SOF 和 SOF 的检测效果。所使用的材料包括 304 不锈钢（SUS304）、6061 铝合金（Al6061）、聚偏二氟乙烯（PVDC）和聚四氟乙烯（PTFE）。结果表明，与金属 SUS304 和 Al6061 相比，塑料 PVDC 和 PTFE 会将 SOF 和 SOF 的气体吸附减少 10%至 20%，并缩短气体交换过程中的响应时间。实验中的完全气体扩散周期约为 30 秒。不同吸附材料之间 90%上升时间的最大变化对于 SOF 约为 3 秒，对于 SOF 约为 6 秒，而产生的光声幅度相同。本文探讨了 PAS 气体传感在实际应用中的材料选择。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/74a93a337cfe/sensors-22-07949-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/1f187cd2958d/sensors-22-07949-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/0ea57612fda9/sensors-22-07949-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/c8b46a9332b9/sensors-22-07949-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/a28888ac295b/sensors-22-07949-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/3b35491f2012/sensors-22-07949-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/417950d9ae58/sensors-22-07949-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/d09f71f3a52e/sensors-22-07949-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/ce7fe4495bf9/sensors-22-07949-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/ab65d8425196/sensors-22-07949-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/74a93a337cfe/sensors-22-07949-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/1f187cd2958d/sensors-22-07949-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/0ea57612fda9/sensors-22-07949-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/c8b46a9332b9/sensors-22-07949-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/a28888ac295b/sensors-22-07949-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/3b35491f2012/sensors-22-07949-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/417950d9ae58/sensors-22-07949-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/d09f71f3a52e/sensors-22-07949-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/ce7fe4495bf9/sensors-22-07949-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/ab65d8425196/sensors-22-07949-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c56/9611617/74a93a337cfe/sensors-22-07949-g010.jpg

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