Time-based method and device for determining the dielectric constant of a fluid
US5898308A · kind A · utility
40Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N22/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device utilizes micropower, impulse radar and time domain reflectometry to determine the dielectric constant of a fluid. An electrically conductive probe preferably in the form of a transmission line, is inserted at least partially into the fluid. The device includes a signal generator that generates an impulse signal that is propagated along the probe. The time that it takes for the signal to reach the end of the probe is determined. The time of travel of the signal along the probe is then used to determine the dielectric constant of the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.