Title:
測定用対応関係導出方法，特定ガス濃度測定装置の製造方法，及び特定ガス濃度測定装置
Document Type and Number:
Japanese Patent JP7152210
Kind Code:
B2
Abstract:
To provide a method for relatively easily deriving a measurement correspondence enabling a specified gas concentration to be measured with good accuracy.SOLUTION: A measurement correspondence derivation method comprises the steps of: (a) acquiring an oxygen-water correspondence which is a correspondence between an oxygen concentration and a water vapor concentration in gas to be measured; (b) using test gas to be measured as gas which includes specified gas, oxygen, and water vapor so as to imitate the gas to be measured, where a ratio R(=p1/p0) between a water vapor concentration p1 in the test gas to be measured and a water vapor concentration p0 corresponding to an oxygen concentration in the test gas to be measured in the oxygen-water correspondence is 0.9 to 1.1, executing electromotive force measurement processing to measure an electromotive force EMF of a mixed potential cell in a state where a detection electrode is exposed to the test gas to be measured a plurality of times at each of which at least one of a specified gas concentration and the oxygen concentration in the test gas to be measured is changed; and (c) deriving a measurement correspondence on the basis of a result of the plurality of times of the electromotive force measurement processing.SELECTED DRAWING: Figure 5
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Inventors:
Norihiko Mori
Application Number:
JP2018137494A
Publication Date:
October 12, 2022
Filing Date:
July 23, 2018
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
G01N27/416; G01N27/26; G01N27/409
Domestic Patent References:
| JP10267885A | ||||
| JP2018063145A | ||||
| JP2018040723A | ||||
| JP2009511859A | ||||
| JP10221303A |
Foreign References:
| WO2018030369A1 | ||||
| US20020017467 | ||||
| WO2010032641A1 |
Other References:
SCHONAUER, D. et al.,Selective mixed potential ammonia exhaust gas sensor,Sensors and Actuators B: Chemical,2009年,Vol.140, No.2,p.585-590
Attorney, Agent or Firm:
Aitec International Patent Office