Method for analysis of a working fluid using impedance spectroscopy
US7109729B2 · kind B2 · utility
9Cited by
16References
7Claims
0Family size
Assignee
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Key dates
| Filing date | May 15, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | May 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An on-line method for determining the condition of low conductivity working fluids using alternating current, electro-impedance spectroscopy is provided by making measurements over a range of frequencies at temperatures at or above 50° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.