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. 29, 2008
Filed:
Feb. 09, 2006
John Kevin Quackenbush, Middleboro, MA (US);
Michael M. Bower, Wareham, MA (US);
Stephen B. Talutis, Milton, MA (US);
Donald S. Mckinlay, Wareham, MA (US);
John Kevin Quackenbush, Middleboro, MA (US);
Michael M. Bower, Wareham, MA (US);
Stephen B. Talutis, Milton, MA (US);
Donald S. McKinlay, Wareham, MA (US);
Invensys Systems, Inc., Foxboro, MA (US);
Abstract
A non metallic flow through electrodeless conductivity sensor is provided with a conduit having primary and secondary process fluid flowpaths to form a fluid loop. At least one drive and one sense toroid surround the conduit on the fluid loop. Voltage supplied to the drive toroid induces a current in the sense toroid via the fluid loop to eliminate any need for metallic electrodes in contact with the process fluid. At least one additional drive and/or sense toroid is disposed on the fluid loop to enhance induction. Optionally one or more sense coils are disposed about the conduit outside of the fluid loop to cancel out stray electrical noise. An optional conductor disposed along the conduit detects any fluid leakage through changes in resistance thereof.