Title:
ガスセンサ
Document Type and Number:
Japanese Patent JP6401644
Kind Code:
B2
Abstract:
In a sensor element 101, a reference gas regulation pump cell 90 pumps in oxygen to the periphery of a reference electrode 42 in which a reference gas is introduced, by the flow of a control current Ip3 between the reference electrode 42 and an outer pump electrode 23 located in a region exposed to a measurement-object gas. An average current density of the reference electrode 42 under the flow of this control current Ip3 is higher than 0 µA/mm 2 and lower than 400 µA/mm 2 . The average current density is preferably not higher than 170 µA/mm 2 . An average value of the control current Ip3 is preferably higher than 1 µA. The outer pump electrode 23 as a measurement-object gas side electrode of the reference gas regulation pump cell 90 may be provided on an outer surface of a layered body (or more specifically, on a second solid electrolyte layer 6).
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Inventors:
Takayuki Sekiya
Naoya Saito
Shota Kageyama
Naoya Saito
Shota Kageyama
Application Number:
JP2015063962A
Publication Date:
October 10, 2018
Filing Date:
March 26, 2015
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
G01N27/416
Domestic Patent References:
| JP5797439A | ||||
| JP2012211863A | ||||
| JP2001343358A | ||||
| JP2009244140A | ||||
| JP9288084A |
Attorney, Agent or Firm:
Aitec International Patent Office