Patent ID: 9377435
Filing Date: 2016-06-28
CPC Classification: G01N

Claim Text:
1. A gas sensor comprising: a housing defining an ambient gas port and a diffusion cavity, wherein the ambient gas port comprises a diffusion barrier; a first sensing electrode configured to sense a target gas, wherein the target gas is not oxygen; and a second sensing electrode configured to sense oxygen gas, wherein the ambient gas port is the only entrance into the housing and the diffusion cavity, wherein the diffusion cavity is located in a gaseous diffusion path between the ambient gas port and both the first sensing electrode and the second sensing electrode, wherein the first sensing electrode and the second sensing electrode are in gaseous contact with the diffusion cavity, wherein a flexible substrate carries the first sensing electrode and the second sensing electrode, wherein the first sensing electrode and the second sensing electrode are co-planar, wherein the first sensing electrode and the second sensing electrode are distributed symmetrically about an axis passing through the ambient gas port, and wherein a plane of the first sensing electrode and the second sensing electrode is perpendicular to the axis passing through the ambient gas port.