Patent ID: 6580280
Filing Date: 2003-06-17
Classification: G01N

Abstract:
A multilayered gas sensor comprising:a solid electrolytic substrate having oxygen ion conductivity; a measured gas side electrode provided on one surface of said solid electrolytic substrate; a reference gas side electrode provided on an opposite surface of said solid electrolytic substrate so as to be exposed to a reference gas stored in a reference gas chamber; a first lead having one end connected to said measured gas side electrode and the other end connected to a first signal output terminal; and a second lead having one end connected to said reference gas side electrode and the other end connected to a second signal output terminal, wherein the following relationship is satisfied B/A<0.5 â€ƒwherein â€˜Aâ€™ represents an overall resistance value of an electric path including said solid electrolytic substrate, said electrodes, and said first and second leads in a sensor activated condition, while â€˜Bâ€™ represents a resistance value of said first and second leads at a room temperature.