Method and device for monitoring moisture content of an immersed solid dielectric material
US6779385B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 15, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Aug 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and device for monitoring moisture content level of a solid dielectric material, or paper, immersed in a dielectric fluid, or oil, both of which having respective moisture content, and known water solubility properties varying with temperature. The device includes a moisture detector and a temperature detector for measuring moisture content level and temperature level of the oil, respectively. A microprocessor, electrically connected to both the moisture and the temperature detectors, computes the moisture content level of the paper. The microprocessor has the known water solubility properties of the paper and the oil stored therein and processes the oil moisture content level and the oil temperature level so as to determine the paper moisture content level. The latter being displayed on a display connected to the microprocessor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.