Apparatus for ascertaining and monitoring fill level of medium in a container
US8482296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2007 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Jan 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for ascertaining and monitoring fill level of a medium in a container by means of a travel-time measuring method utilizing high-frequency measuring signals. An antenna having an antenna coupling region and an antenna region, or a waveguide having a probe coupling region and a probe measuring region extending into the container is included. Hollow spaces present in the antenna coupling region, in the antenna region, in the probe coupling region and/or in the probe measuring region are filled at least partially with a dielectric filling body. The dielectric filling body has internally at least one, hermetically sealed, reserved volume and the hermetically sealed, reserved volume is so embodied, that the dielectric filling body has a predetermined wave resistance and/or the high-frequency measuring signals have a predetermined propagation characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.