Radar level gauge with improved radar window
US8350751B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2010 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Feb 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar level gauge for determining the filling level of a product in a tank, comprising a transceiver for transmitting and receiving microwaves, processing circuitry connected to the transceiver and adapted to determine the filling level, an antenna connected to said transceiver and arranged to emit and receive microwaves through an opening of the tank, and a microwave transmissive sealing member adapted to cover said opening and to provide pressure sealing of the tank. The sealing member comprises a metal grid layer providing structural strength, which metal grid layer has sealed openings formed to allow transmission of microwaves.The tank opening is thus divided into a number of smaller openings by the metal grid, thereby improving the mechanical strength of the sealing member. At the same time, the sealing member is designed to maintain its pressure sealing properties, e.g. by suitable dielectric filling of the openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.