Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For oxygen or oxygen containing compound
Patent
1998-08-18
2000-08-01
Warden, Sr., Robert J.
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
For oxygen or oxygen containing compound
205775, 204401, 73 106, G01N 27404
Patent
active
060961864
ABSTRACT:
A method by which an oxygen measuring instrument can test the functionality of the oxygen sensor. Oxygen sensors of the galvanic type operate by consumption of an internal easily oxidizable anode, such as lead or cadmium. Failure of the sensor due to complete consumption of all of the anode material, such that the oxygen sensor is no longer able to detect oxygen, is often rapid with little warning. This invention describes an electrical test, which may be performed in-situ on the oxygen sensor by the instrument, which provides a means for detection of an imminent failure, while the sensor is still operational.
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Industrial Scientific Corporation
Olsen Kaj K.
Warden, Sr. Robert J.
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