Material for improved sensitivity of stray field electrodes
US6323659A · kind A · utility
46Cited by
17References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Sep 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A stray field electrode (1) includes a base material (2) and a conductive filler material (3). The base material is preferably an insulating material, such as a silicone elastomer film. The conductive filler material is preferably a metal, such as silver particles dispersed in the silicone elastomer film. A set of stray field electrodes (16, 17, 18) may be used to determine the presence of water in a material (8), such as electrical generator insulation (14), by comparing a phase angle for the electric field (19, 20) between the electrodes with a predetermined phase angle for a dry material (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.