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:
Mar. 08, 1994
Filed:
May. 07, 1992
Gary P Lucas, Hilton, GB;
Sam Simonian, Welwyn Garden City, GB;
Schlumberger Technology Corporation, Houston, TX (US);
Abstract
A multi-electrode capacitive apparatus for measuring multi-phase flows comprising a pipe through which the flow is directed having the electrodes, typically ten in number, disposed around an outer surface thereof, sensing means being provided for connection to each electrode by means of a switching arrangement, the switching arrangement being operable to vary the connections of the electrodes to the sensing means such that the electric field seen within the pipe rotates; averaging means being provided to determine the average capacitance measured over an integer number of rotations. The pipe can be formed from a material having substantially the same dielectric constant as the flowing material and is of sufficient thickness to optimise the angular sensitivity of the device for flow at the pipe wall. Typically, the internal radius of the pipe is about 0.7 of the radius of the electrode arrangement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile