Patent ID: 9151729
Filing Date: 2015-10-06
Classification: G01N,Y10T

Abstract:
1. A gas sensor comprising: an ion conducting solid electrolyte membrane having opposed side portions; a first working electrode positioned adjacent one opposed side portion of said solid electrolyte membrane; a second counter electrode positioned adjacent the other opposed side portion of said solid electrolyte membrane wherein an electrical signal is produced between said first and second electrodes in response to the presence of a gas at the first electrode; a water reservoir for providing a water vapor source to said ion conducting solid electrolyte membrane; a water permeation barrier positioned adjacent said water reservoir, said water permeation barrier being comprised of a material that is non-porous, electrically non-conductive, permeable to water vapor and impermeable to at least carbon monoxide, said water permeation barrier separating the ion conducting solid electrolyte membrane from said water reservoir; and a housing member for holding said first and second electrodes and said ion conducting solid electrolyte membrane, said housing member including said water permeation barrier.