Patent · US Expired

Method and apparatus for establishing and/or monitoring the filling level of a medium in a container

US6389891B1 · kind B1 · utility

68Cited by

8References

38Claims

0Family size

Assignee

Endress+Hauser Inc. · DE

Inventors

Sascha D'Angelico · Tuttlingen, DE
Sergej Lopatin · Lörrach, DE

Key dates

Filing date	May 24, 2000
Grant date	May 21, 2002
Priority date	—
Expiry date	May 24, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/0427
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a method and an apparatus for establishing and/or monitoring the filling level of a medium in a container and to the determination of the density of a medium in a container.It is the object of the invention to propose a method and an apparatus which permit reliable determination and/or monitoring of the filling level or the density of a medium.With reference to the apparatus according to the invention, the object is achieved by virtue of the fact that at least a first mode and a second mode of the oscillations of the oscillable unit (2) are evaluated, and the evaluated modes are used to detect a change in mass at the oscillable unit (2).

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