Patent · US Active

Coriolis mass flowmeter with magnetic field detector

US12152920B2 · kind B2 · utility

0Cited by

5References

26Claims

0Family size

Assignee

Endress+Hauser Flowtec AG · CH

Inventors

Robert Lalla · Bad Kötzting, DE
Alfred Rieder · Landshut, DE
Ennio Bitto · Aesch, CH
Marcel Braun · Konolfingen, CH

Key dates

Filing date	Nov 21, 2019
Grant date	Nov 26, 2024
Priority date	—
Expiry date	Nov 23, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01F15/007
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The Coriolis mass flowmeter comprises a measuring transducer having a vibration element, an exciter arrangement, and a sensor arrangement The flowmeter further includes an electronic transmitter circuit coupled with the exciter arrangement and the sensor arrangement. The transmitter circuit supplies power to the exciter arrangement to force mechanical oscillations having a wanted frequency. The sensor arrangement includes two electrodynamic oscillation sensors to convert oscillatory movements of the vibration element into an electrical signal having an alternating voltage having an amplitude dependent on the wanted frequency and on a magnetic flux of its oscillation sensor. The sensor arrangement includes a magnetic field detector adapted to convert changes of the magnetic field into a magnetic field signal having an amplitude dependent on a magnetic flux and/or an areal density of the magnetic flux. The transmitter circuit ascertains mass flow measured values and ascertains whether an external magnetic field is present.

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