Ammonia gas sensor
AssigneeNgk Spark Plug Co., Ltd.
InventorsSatoshi SUGAYA, Hiroyuki NISHIYAMA, Wataru MATSUTANI, Shiro KAKIMOTO
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Abstract
An ammonia gas sensor including a reference electrode (320) is formed on the back surface of a solid electrolyte member (310), and a detection electrode (335) is formed on the front surface of the solid electrolyte member (310). A detection lead (350) is provided on the front surface of the solid electrolyte member (310) such that the detection lead (350) is connected to the detection electrode (335). An insulating layer (340), (380) is provided between the detection lead (350) and the solid electrolyte member (310), or on the detection lead (350).
Claims19
An ammonia gas sensor comprising:
- a solid electrolyte member which extends in an axial direction and contains zirconia as a predominant component;
- a detection portion provided on a front surface of the solid electrolyte member;
- a reference electrode provided on a back surface of the solid electrolyte member;
- a detection lead provided directly, or via another member, on the front surface of the solid electrolyte member so as to establish electrical connection between the detection portion and an external circuit, and
- an insulating portion provided at least on a surface of the detection lead or between the detection lead and the solid electrolyte member.
Dependencies are inferred from the claim text.