Sensor element for detection of hydrocarbons
US5341128A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1992 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Apr 10, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor for detecting the presence of hydrocarbons and hydrocarbon containing fluids. It is formed of a first conductor which is formed of a metal wire or metal foil covered by an insulative sheath; a second conductor which consists of a hydrocarbon swellable elastomer and one or more conductive fillers; optionally an abuse/abrasion resistant jacket overlaying and preferably surrounding the two conductors and optionally a hydrocarbon permeable overcoat overlaying the jacket. The sensor may be in the form of a continuous length wire or a tape or a sheet. It may be coupled to an electric supply at one portion and a resistance indicator at the return portion. The resistance indicator is then attached to a signaling device such as a light or alarm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.