Patent · US Active

Method for detecting accretion or abrasion in a flow measuring device

US9134165B2 · kind B2 · utility

3Cited by

8References

13Claims

0Family size

Assignee

Endress+Hauser Flowtec AG · CH

Inventors

Michael Kirst · Lörrach, DE
Alfred Rieder · Landshut, DE
Wolfgang Drahm · Erding, DE
Hao Zhu · Freising, DE
Christof Huber · Bern, CH
Vivek Kumar · Troy, US

Key dates

Filing date	Aug 2, 2012
Grant date	Sep 15, 2015
Priority date	—
Expiry date	Oct 6, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01K3/04
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for detecting accretion or abrasion on a first measuring tube of a flow measuring device. A first temperature as a function of time is registered via a first temperature sensor, which is arranged on the first measuring tube in such a manner that, between the first temperature sensor and the medium, at least one measuring tube wall of the first measuring tube is embodied. Parallel in time, a second reference temperature as a function of time is registered by a second temperature sensor, which is spaced from the first temperature sensor and thermally coupled to the medium. Therefrom, at least one variable characteristic is determined, and accretion or abrasion on the first measuring tube is detected, if the at least one determined characteristic variable or a variable derived therefrom deviates by more than a limit value from a predetermined reference variable.

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