04541901 is referenced by 23 patents and cites 7 patents.

The calibration of a polarographic oxygen sensor (20) at zero oxygen concentration is accomplished by providing an oxygen-free liquid environment at the sensor active surface. This is accomplished electrolytically by depleting a thin film of electrolyte (24) of oxygen to zero concentration with an oxygen-reducing cathode (6), and complementary anode (4), connected via a battery (10) and switch (12). The sensor (20) is placed into close proximity with the electrodes (4,6) and the oxygen in the electrolyte (24) reduced while its concentration is measured by the sensor (20). A low steady-state signal for the sensor provides the zero oxygen concentration calibration point.

Title
Method and apparatus for zero calibration of oxygen-sensing polarographic devices
Application Number
6/603718
Publication Number
4541901
Application Date
April 25, 1984
Publication Date
September 17, 1985
Inventor
David T Delpy
London
GB
Dawood Parker
London
GB
Agent
Howard F Mandelbaum
Assignee
Novametrix Medical Systems
CT, US
IPC
G01N 27/46
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