| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas sensor element and a gas sensor capable of accurately detecting oxygen concentration or air-fuel ratio even after being left for a long term. SOLUTION: On one face of a solid electrolyte 12, a measured gas side electrode 111 exposed to a measured gas is arranged, while a reference gas side electrode 112 exposed to a reference gas and opposed to the reference gas chamber 100 is arranged on the other face. Inside the reference gas chamber 100, a water vapor adsorbent 11 is arranged. |
