Impedance measurement of a PH electrode
First Claim
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1. A method of measuring impedance of a pH electrode, the method comprising:
- applying a test current 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;
measuring a voltage response of the pH electrode when the test current is applied to the pH electrode; and
calculating an impedance of the pH electrode as a function of the voltage response.
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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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Citations
21 Claims
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1. A method of measuring impedance of a pH electrode, the method comprising:
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applying a test current 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; measuring a voltage response of the pH electrode when the test current is applied to the pH electrode; and calculating an impedance of the pH electrode as a function of the voltage response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of measuring impedance of a pH electrode, the method comprising:
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determining a circuit equivalent based on electrical characteristics of the pH electrode; generating an approximated circuit equivalent as a function of the circuit equivalent, wherein generating an approximated circuit equivalent includes selecting an arbitrary non-zero frequency component approximation; applying a test current to the pH electrode; measuring a voltage response of the pH electrode while the test current is applied to the pH electrode; and calculating an impedance of the pH electrode as a function of the voltage response and the approximated circuit equivalent. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification