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. 04, 2004
Filed:
Apr. 28, 2000
Norman O. Fonteneau, Acushnet, MA (US);
The Foxboro Company, Foxboro, MA (US);
Abstract
An inductive flowmeter for measuring the flow velocity of a conductive fluid has an electrical circuit that advantageously utilizes minimal analog components, and hence has advantages over conventional systems. The circuit has an evaluation channel that measures a differential voltage induced across the fluid as it flows through a region having a magnetic field, and has a reference channel that provides a voltage indicative of the strength of the magnetic field. The differential voltage and the reference voltage are each digitized over the same time interval, and a programmable controller calculates a ratio of the digitized voltages to provide the flow velocity of the fluid.