Patent · US Expired

Magnetic flowmeter

US4539853A · kind A · utility

9Cited by

4References

8Claims

0Family size

Assignee

Fischer & Porter GmbH · US

Inventors

Eggert Appel · Dransfeld, DE
Gottfried Geisler
Wilfried Kiene · Menden, DE

Key dates

Filing date	Jun 27, 1984
Grant date	Sep 10, 1985
Priority date	—
Expiry date	Jun 27, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG01F1/58
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A magnetic flowmeter which includes a spool formed by a metallizable ceramic through which the fluid to be metered is conducted. The outer surface of the spool is metallized in its central region to define a pair of metering electrodes at diametrically-opposed positions, an electromagnetic field being established within the spool whereby when the flowing fluid intercepts this field, an emf is induced therein to produce a signal at the metering electrodes which is a function of flow rate. Overlying each metering electrode and projecting from the spool is a ceramic block whose outer surface is metallized to define a shield electrode which covers the metering electrode.

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