Patent · US Active

Device and method for measuring the level of a liquid within a container

US9395228B2 · kind B2 · utility

8Cited by

7References

19Claims

0Family size

Assignee

TRUMA GERAETETECHNIK GMBH & CO. KG · DE

Inventors

Thomas Molitor · Putzbrunn, DE
Frank Ibach · Grafing, DE

Key dates

Filing date	Feb 15, 2013
Grant date	Jul 19, 2016
Priority date	—
Expiry date	May 13, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01F23/2965
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for measuring the level of a liquid within a container, in particular the level of liquid gas, comprises a housing and a piezoelectric element adapted for generating vibrations when energized. A coupling pad is provided which is bonded to the piezoelectric element for transmitting the vibrations to a surface of the container. Further, a non-tilting element is provided which surrounds the coupling pad. A method for measuring the level of liquid within a container uses a piezoelectric element for generating vibrations which are transmitted into the shell of the container. An analyzing strategy is used which distinguishes between normal post-pulse oscillations of the piezoelectric element after a measurement was triggered, and extended post-pulse oscillations which are the result of echoed oscillations in the shell of the container.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.