The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2021
Filed:
May. 07, 2019
Shimadzu Corporation, Kyoto, JP;
Ryo Tanabe, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
In a chemiluminescence type nitrogen oxide concentration meter, a mixed gas of air with its moisture adsorbed by an adsorption apparatus and air that through a fifth flow path without the adsorption apparatus in between is flown into an ozone generator. Therefore, ozone can be generated using air of proper humidity in the ozone generator. As a result, ozone can be efficiently generated while suppressing occurrence of metal contamination in the ozone generator. Then, in the reaction unit, nitrogen oxides in the sample gas are made to appropriately show chemiluminescence using the ozone, and in the detector, the intensity of light generated in the reaction unitis detected. Furthermore, in the control unit, the concentration of nitrogen oxides in the sample gas is measured, based on the intensity of light detected by the detector