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:
Dec. 13, 1977
Filed:
Aug. 31, 1976
Ronald L Dechene, Boxford, MA (US);
Frank G Grimaldi, Tewksbury, MA (US);
Robert E Newton, Tewksbury, MA (US);
Auburn International, Inc., Danvers, MA (US);
Abstract
The relative amounts of liquid phase versus vapor phase of a mixed phase conductive fluid, such as boiling water, is determined by conductivity measurement taken in several distributed directions overlapping within the cross section of a flow path by providing a rotating field vector therein with an alternating voltage on the order of 1-30 kilohertz, with conductivity measurement produced by the rotated field being divided by a liquid conductivity measurement to determine liquid fraction (and by subtraction from unity, vapor fraction), the rotating electrical field being produced by application of a multi-phase alternating current to groups of electrodes with poled pairs distributed in alternation around the periphery of the cross section to be measured, the electrode structure and intervening insulators defining a flow measuring cross section with allowance for rigors of flow conditions and fluid environment to provide reliable, long-lived effective measurement.