US 12,442,757 B2
Gas measuring device and gas measuring method
Manase Mizutani, Nagoya (JP); Toshihiko Noda, Toyohashi (JP); and Kazuaki Sawada, Toyohashi (JP)
Assigned to SINTOKOGIO, LTD., Nagoya (JP); and National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Toyohashi (JP)
Filed by SINTOKOGIO, LTD., Nagoya (JP); and National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Toyohashi (JP)
Filed on May 16, 2023, as Appl. No. 18/197,947.
Claims priority of application No. 2022-096776 (JP), filed on Jun. 15, 2022.
Prior Publication US 2023/0408400 A1, Dec. 21, 2023
Int. Cl. G01N 21/21 (2006.01)
CPC G01N 21/21 (2013.01) 6 Claims
OG exemplary drawing
 
1. A gas measuring device comprising:
a case that defines a gas chamber;
the gas chamber into which a sample gas containing a target gas is introduced;
a gas sensor configured to detect the target gas contained in the sample gas introduced into the gas chamber;
a light source configured to apply polarized light to the sample gas introduced into the gas chamber using a polarizer;
an optical sensor configured to measure optical rotation between the polarized light applied from the light source to the sample gas and the polarized light that has been transmitted through the sample gas using an analyzer; and
an output module configured to output information on the target gas detected by the gas sensor and information on the optical rotation of the polarized light detected by the optical sensor in association with each other,
wherein the gas sensor, the light source and the optical sensor are disposed inside the case.