Microwave tank-contents level measuring assembly with lens-obturated wall-opening
US4566321A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1985 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Jan 18, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/284
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microwave tank-contents level measuring system is housed within a housing having an open end obturated by a hyperbolically curved convex-plano fluid impermeable solid dielectric lens providing a seal for the tank opening over which the housing is installed while collimating the outgoing ranging signal and focusing the return signal. A separate removable housing cover provides access to the electronic components for service while the tank-opening sealing function of the lens is not disturbed. A transmitting-receiving horn is dimensioned and positioned on the axis of the lens with its effective phase center at the operating frequency coinciding with a focal point of the hyperbolic surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.