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. 11, 2008
Filed:
Feb. 21, 2006
Lennart Hagg, Kungsbacka, SE;
Lars Ove Larsson, Linkoping, SE;
Mikael Kleman, Vreta Kloster, SE;
Per Holmberg, Linkoping, SE;
Lennart Hagg, Kungsbacka, SE;
Lars Ove Larsson, Linkoping, SE;
Mikael Kleman, Vreta Kloster, SE;
Per Holmberg, Linkoping, SE;
Rosemount Tank Radar AB, Gothenburg, SE;
Abstract
A method and system for determining a product level in a tank which determine a first level measure using emission of electromagnetic waves into the tank, detect a differential pressure, determine an observed density based on the detected differential pressure and the first level measure, and determine a second level measure based on the observed density and a currently measured differential pressure. The present invention is based on the realization that a level measurement based on differential pressure and an observed density can provide a valuable redundant level measurement, which can provide increased reliability and enable detection of errors.