GAS MEASURING APPARATUS, GAS MEASURING METHOD AND GAS CELL

A gas measuring apparatus of an embodiment includes a light source, a gas cell and a detection portion. The light source emits infrared light. Into the gas cell, gas containing 13CO2 and 12CO2 is introduced, and the gas cell includes an incident surface on which the infrared light is incident and an...

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Bibliographic Details
Main Authors Magara Takashi, KUSABA Miyuki, Kakuno Tsutomu, Maekawa Akira, Shiomi Yasutomo, Takagi Shigeyuki, Hasegawa Hiroshi
Format Patent
LanguageEnglish
Published 29.12.2016
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A gas measuring apparatus of an embodiment includes a light source, a gas cell and a detection portion. The light source emits infrared light. Into the gas cell, gas containing 13CO2 and 12CO2 is introduced, and the gas cell includes an incident surface on which the infrared light is incident and an emission surface through which the infrared light is transmitted. The gas cell has a cell length of 2.5 cm or more and 20 cm or less. The detection portion measures a first transmittance of transmitted light from the emission surface at a first wavelength in wavelength range in an absorption line of the 13CO2 and a second transmittance of transmitted light from the emission surface at a second wavelength in the wavelength range in an absorption line of the 12CO2, and is capable of calculating a concentration of each of the 13CO2 and the 12CO2.
Bibliography:Application Number: US201615259778