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:
May. 18, 1999
Filed:
May. 23, 1997
Jorg Herwig, Adelebsen, DE;
Klaus Schafer, Hannoversch Munden, DE;
Bailey Fischer & Porter GmbH, Goettingen, DE;
Abstract
Magneto-inductive flow measurement using a pulsed and/or reversing pulsed constant field wherein the measurement voltage which is induced by the flow, running transversely with respect to the magnetic field, of the measurement medium in the measurement tube of the magneto-inductive flowmeter is sampled in each clock time interval when the coil current is applied, even if the magnetic field has not yet reached its steady-state. Empirically determined correction values are used to correct the samples to the situation when measurements are carried out with a steady-state magnetic field. Calibration measured values can be recorded in a steady-state magnetic field from time to time, in order to check and, if required, to correct the correction factors. The coil current can be switched at frequencies which alternate with one another in time, the number of periods of the mutually alternating period sequences being varied in an irregular manner.