Patent · US Active

Method for detecting blockage in a Coriolis flow measuring device

US8738305B2 · kind B2 · utility

1Cited by

3References

25Claims

0Family size

Assignee

Endress+Hauser Flowtec AG · CH

Inventors

Alfred Rieder · Landshut, DE
Wolfgang Drahm · Erding, DE
Hao Zhu · Freising, DE
Marcel Braun · Konolfingen, CH

Key dates

Filing date	May 5, 2010
Grant date	May 27, 2014
Priority date	—
Expiry date	Feb 4, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01F25/10
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for detecting blockage of a measuring tube of a Coriolis flow measuring device, which has at least two measuring tubes. For this, the at least two measuring tubes are excited by at least one exciter to execute mechanical oscillations, mechanical oscillations of the measuring tubes are registered by at least one sensor and at least one measurement signal representing the mechanical oscillations is produced. At least one produced measurement signal is analyzed for the occurrence of a deviation of a resonance frequency of one measuring tube relative to a resonance frequency of the at least one other measuring tube. In case such a deviation occurs, blockage of a measuring tube is established.

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