Patent ID: 11940406
Assignee: NGK INSULATORS, LTD.
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 2:
3. The gas sensor according to claim 1, further comprising:
when n is an integer of greater than or equal to 3, first to n-th measurement pump cells including the first measurement pump cell and the second measurement pump cell,
wherein, when p is an integer from 3 to n, a p-th measurement pump cell includes a p-th measurement electrode and a p-th outer measurement electrode and is configured to pump out oxygen produced in a p-th measurement chamber from the specific gas, the p-th measurement electrode being disposed in the p-th measurement chamber provided on the downstream side of the oxygen concentration adjustment chamber in the measurement-object gas flow section, the p-th outer measurement electrode being provided outside the element body so as to contact with the measurement-object gas, and
wherein the measurement-object gas flow section is configured such that the measurement-object gas passes through a (p−1)-th measurement chamber and a p-th measurement-electrode diffusion-rate-controlling section in this order and reaches the p-th measurement chamber.