G - Physics – 01 – N
Patent
G - Physics
01
N
324/25
G01N 27/62 (2006.01) F23N 5/00 (2006.01)
Patent
CA 1095990
ABSTRACT OF THE DISCLOSURE An oxygen ion conductive solid electrolyte elec- trochemical cell is employed to pump oxygen for combustible reaction with fuel constituents of a combustibles gas en- vironment which diffuse through an aperture of a housing. The housing in combination with the solid electrolyte elec- trochemical cell forms an internal chamber. The EMF estab- lished across the electrodes of the solid electrolyte elec- trochemical cell pumps sufficient oxygen for complete com- bustion with the fuel diffusing through the aperture into the internal chamber. The resulting current of the solid electrolyte electrochemical is indicative of the rate of diffusion of the fuel or combustibles constituent through the aperture. The rate of diffusion is proportional to the fuel or combustibles content of the combustibles gas en- vironment. An EMF measuring circuit connected to an auxiliary pair of electrodes associated with the solid electrolyte electrochemical cell is used to sense the condition wherein the atmosphere within the internal chamber changes between a reducing atmosphere and an oxidizing atmosphere. This EMF indication can be used to identify a predetermined level of pumping electrical potential at which variations in the solid electrolyte electrochemical cell current is indicative of the rate of diffusion of the fuel or combustibles consti- tuent through the aperture.
289325
Mcconnell And Fox
Westinghouse Electric Corporation
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