Impedance measurement of a pH electrode
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United States of America Patent
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Nov 22, 2011
Grant Date -
Feb 21, 2008
app pub date -
Aug 17, 2007
filing date -
Aug 18, 2006
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Abstract
A method of measuring impedance of a pH electrode is provided. A test current is applied to the pH electrode for a time duration that is less than 50 percent of a time constant that is associated with electrical characteristics of the pH electrode. A voltage response of the pH electrode is measured when the test current is applied to the pH electrode. An impedance of the pH electrode is calculated as a function of the voltage response.
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