Patent · US Expired

Apparatus for measuring the flow of a fluid medium

US5187988A · kind A · utility

9Cited by

3References

17Claims

0Family size

Assignee

Fischer & Porter GmbH · US

Inventors

Hans J. Dettmer · Göttingen, DE
Jorg Herwig · Dransfeld, DE
Joachim Hagemann · Hersbruck, DE
Werner Marchewka · Witzenhausen, DE
Michael tzfeld · Kassel, DE

Key dates

Filing date	Mar 26, 1991
Grant date	Feb 23, 1993
Priority date	—
Expiry date	Mar 26, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S73/05
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Apparatus for measuring the flow of a fluid medium which flows upward through a substantially vertically mounted tube section having a suspended body in the tube section. The vertical position of the suspended body depends on the intensity of the flow. Movement of a magnet, movable with the suspended body, is sensed by a unit which includes a Hall sensor and an electronic evaluation circuit, responsive to the Hall sensor output, develops an output signal corresponding to the flow of the medium.

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