Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1997-11-03
1999-05-11
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204406, 204408, 204431, 205783, G01N27/404
Patent
active
059024674
ABSTRACT:
An oxygen sensor based on a metal-air cell, typically a commercially available zinc-air battery of the type used in hearing aids. The cell, which admits oxygen to generate electric current at its cathode is disposed in a mechanical housing which restricts the flow of oxygen to the cell, and is connected to an electrical circuit which provides a variable resistance load, the load increasing as current flow through the circuit decreases, to prevent hydrogen evolution at the cathode. Current flow through the cell is measured, and is proportional to oxygen concentration.
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Wang Annie Q.
Warburton P. Richard
Industrial Scientific Corporation
Tung T.
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