Gas sensor

Details Gas sensor Gas sensor

G - Physics

01

N

G01N 27/28 (2006.01) G01N 27/49 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2059949

12 ABSTRACT OF THE DISCLOSURE An electrochemical gas sensor for sensing an alkaline gas such as ammonia. The sensor comprises at least sensing and counter electrodes provided in a cell containing an aqueous electrolyte, the cell further including a diffusion barrier to restrict the access of gas to the cell, and a chemical species with which the gas reacts in use to form a product which is more electrochemically active than the gas. The chemical species is one of iodine, Nesslers reagent and a solution of manganous and silver nitrates.

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