Amperometric sensor for low level dissolved oxygen with self-depleting sensor design
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United States of America Patent
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Apr 24, 2007
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N/A
app pub date -
Jun 3, 2003
filing date -
Nov 1, 2000
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Abstract
A dissolved oxygen sensor having a cathode and anode immersed in an electrolyte is designed to provide a low background current in the sensor when a potential is applied to the cathode. The background current is maintained at a desired level by selecting the area and length of a channel or path of diffusion of residual oxygen in the electrolyte to the cathode. The area (A) of the diffusion channel in relation to its length (L) is selected to be at or below a selected ratio, A/L.
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