Method and apparatus for analyzing the electrode inpedance
US4831324A · kind A · utility
28Cited by
4References
8Claims
0Family size
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Key dates
| Filing date | Mar 16, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Mar 16, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for analyzing the electrode impedance, in which an a.c. voltage with its frequency varied at intervals is applied between a pair of measuring electrodes dipped in the sample liquid, the complex a.c. impedance between the electrodes is measured at each frequency, the maximum value among absolute values of imaginary part of the measured impedance values is detected as the electrode polarization resistance, and the solution resistance of the liquid is calculated by subtracting the detected maximum value from the real part of the impedance corresponding to the maximum imaginary part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.