The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2004
Filed:
Apr. 12, 2000
Steen M. Matzen, Sønderborg, DK;
Siemens Flow Instruments A/S, Nordborg, DK;
Abstract
A method for testing an electromagnetic flowmeter and a flowmeter are described, the flowmeter having a measuring tube ( ) and a coil arrangement ( ) for generating a magnetic field perpendicular to the direction of flow through the measuring tube ( ), the current direction in the coil arrangement being periodically changed. In this connection, it is desirable for simple monitoring to be possible. For that purpose, after changing the current direction, at least one parameter of the current rise is determined and this is compared with a reference value. For this, the flowmeter has a testing device ( ) which, after a change-over of the current direction, determines at least one parameter (T) of the rise in the current in the coil arrangement ( ) and compares it with a given value.