Patent ID: 6093295
Filing Date: 2000-07-25
Classification: G01N

Abstract:
A sensor for measuring oxygen and unburnt fuel content of a combustion gas, said sensor comprising:a first electrode configured to make contact with said combustion gas;a second electrode;a third electrode;solid electrolyte, disposed between each of said first, second, and third electrodes;a first gas pathway for passing a reference gas of known oxygen concentration to said third electrode;a second gas pathway for passing said combustion gas to said second electrode;an oxidation catalyst disposed within said second gas pathway and within close proximity of said combustion gas in said second gas pathway; anda measurement device for measuring electrical potential difference between pairs of electrodes, said pairs including at least two pairs selected from a list consisting of:a) the first and second electrodes;b) the first and third electrodes; andc) the second and third electrodes.