Title:
ガスセンサのキャリブレーション方法
Document Type and Number:
Japanese Patent JP6909663
Kind Code:
B2
Abstract:
A gas sensor includes a sensor element made of an oxygen-ion conductive solid electrolyte and is configured to determine a concentration of a measurement target gas component based on a sensitivity characteristic as a predetermined functional relation held between a sensor output and the concentration of the gas component. The sensor output is a potential difference generated between a sensing electrode of the sensor element heated to a predetermined sensor drive temperature and a reference electrode. At the reference electrode, Au is concentrated at a predetermined maldistribution degree on the surface of a noble metal particle. In the present invention, the sensitivity characteristic is calibrated so as to suit the maldistribution degree at the reference electrode, based on the value of a predetermined alternative maldistribution degree index acquired in a non-destructive manner by performing predetermined measurement while the sensor element is heated to the predetermined temperature.
Inventors:
Taku Okamoto
Yuka Nakayama
Soichiro Yoshida
Yuka Nakayama
Soichiro Yoshida
Application Number:
JP2017140908A
Publication Date:
July 28, 2021
Filing Date:
July 20, 2017
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
G01N27/26; G01N27/407; G01N27/416
Domestic Patent References:
| JP2017110967A | ||||
| JP2017090405A | ||||
| JP2004044600A | ||||
| JP2001208726A | ||||
| JP2017090404A | ||||
| JP5918434B1 |
Foreign References:
| DE102011005966A1 |
Attorney, Agent or Firm:
Yoshitake Hidetoshi
Takahiro Arita
Takahiro Arita