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	Gas measuring apparatus
	MAEKAWA, AKIRA; KUSABA, MIYUKI; TAKAGI, SHIGEYUKI; HASEGAWA, HIROSHI; KAKUNO, TSUTOMU; SHIOMI, YASUTOMO
	2018-03-01
著作权人	KABUSHIKI KAISHA TOSHIBA
专利号	US20180059012A1
国家	美国
文献子类	发明申请
其他题名	Gas measuring apparatus
英文摘要	A gas measuring apparatus includes a cell portion, a light source portion, a detection portion, and a control portion. The cell portion includes a space into which a sample gas containing breath containing a first isotope of carbon dioxide and a second isotope of carbon dioxide is introduced. The light source portion changes a wavelength of the light in a band of 4.345 μm or more and 4.384 μm or less. The detection portion performs an operation including first detection of an intensity of the light passing through the space and second detection of an intensity of the light passing through the space into which the sample gas is not introduced. The control portion calculates a ratio of an amount of the second isotope to an amount of the first isotope based on a result of the first detection and a result of the second detection.
公开日期	2018-03-01
申请日期	2017-10-20
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/62322]
专题	半导体激光器专利数据库
作者单位	KABUSHIKI KAISHA TOSHIBA
推荐引用方式 GB/T 7714	MAEKAWA, AKIRA,KUSABA, MIYUKI,TAKAGI, SHIGEYUKI,et al. Gas measuring apparatus. US20180059012A1. 2018-03-01.

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