Patent ID: 8888979

Claim:
An electrochemical carbon monoxide sensor comprising: a housing comprising: a first sidewall; a top wall comprising a gaseous diffusion aperture; and a bottom wall; wherein: the first sidewall, the top wall and the bottom wall define a containment region and the top wall of the housing having a single gaseous diffusion aperture; a micro electrode assembly comprising: an anode; a cathode comprising a pyrolysis product of a carbonaceous material and a coordination complex comprising a transition metal and a nitrogen-containing macrocycle; and an ion conducting membrane; wherein: the ion conducting membrane is configured to permit ion transport between the anode and the cathode, and prevent electron conduction between the anode and the cathode; the cathodic material does not materially exhibit catalytic activity for the oxidation of carbon monoxide; the anode and the cathode are configured to be exposed to the same sample gas at the same time; and the carbon monoxide sensor is substantially waterless.