Method and apparatus for monitoring liquid levels within a vessel
US7100441B2 · kind B2 · utility
4Cited by
15References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Jun 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/263
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for monitoring the level of a liquid in a vessel comprises at least one metallic probe hermetically sealed within the vessel, the probe having a sealing end and at least a portion of the probe constituting a first electrode, the sealing end of the probe being encased within a glass material, a second electrode spaced apart from said first electrode in a manner such that the first and second electrode together form part of a capacitor, a mechanism for supplying an electrical current from an applied electrical current source to the capacitor, and a mechanism for monitoring capacitance of the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.