Sensor element and gas sensor

A flat limiting-current-type sensor 10 includes a solid electrolyte substrate 22, a negative electrode 34a, and a positive electrode 32a. The negative and positive electrodes 34a and 32a, respectively, are disposed on the same side of the solid electrolyte substrate 22. A voltage of 0.8 V is applied...

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Main Authors HORII, KATSUHIKO, MIWA, KANAME, YAGI, HIDEAKI
Format Patent
LanguageEnglish
French
German
Published 18.09.2013
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Abstract A flat limiting-current-type sensor 10 includes a solid electrolyte substrate 22, a negative electrode 34a, and a positive electrode 32a. The negative and positive electrodes 34a and 32a, respectively, are disposed on the same side of the solid electrolyte substrate 22. A voltage of 0.8 V is applied between the negative electrode 34a and the positive electrode 32a in order to determine oxygen concentration. The ratio between the area of the negative electrode 34a and the area of the positive electrode 32a is set to 1:2, thereby reducing element resistance to 74% that in the case where the negative electrode and the positive electrode assume the same area. Thus, the measurement accuracy of the flat limiting-current-type sensor 10 can be improved.
AbstractList A flat limiting-current-type sensor 10 includes a solid electrolyte substrate 22, a negative electrode 34a, and a positive electrode 32a. The negative and positive electrodes 34a and 32a, respectively, are disposed on the same side of the solid electrolyte substrate 22. A voltage of 0.8 V is applied between the negative electrode 34a and the positive electrode 32a in order to determine oxygen concentration. The ratio between the area of the negative electrode 34a and the area of the positive electrode 32a is set to 1:2, thereby reducing element resistance to 74% that in the case where the negative electrode and the positive electrode assume the same area. Thus, the measurement accuracy of the flat limiting-current-type sensor 10 can be improved.
Author MIWA, KANAME
HORII, KATSUHIKO
YAGI, HIDEAKI
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DocumentTitleAlternate Elément de capteur et capteur de gaz
Sensorelement und Gassensor
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Snippet A flat limiting-current-type sensor 10 includes a solid electrolyte substrate 22, a negative electrode 34a, and a positive electrode 32a. The negative and...
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SubjectTerms INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
Title Sensor element and gas sensor
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