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.

Date of Patent:
Mar. 14, 2017

Filed:

May. 19, 2014
Applicant:

Rosemount Tank Radar Ab, Gothenburg, SE;

Inventors:

Leif Nilsson, Linkoping, SE;

Hakan Delin, Linkoping, SE;

Hakan Nyberg, Linkoping, SE;

Assignee:

Rosemount Tank Radar AB, Gothenburg, SE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 23/284 (2006.01); G01S 7/28 (2006.01); G01S 7/292 (2006.01); G01S 13/10 (2006.01); G01S 13/22 (2006.01); G01S 13/88 (2006.01); G01S 13/30 (2006.01);
U.S. Cl.
CPC ...
G01F 23/284 (2013.01); G01S 7/28 (2013.01); G01S 7/2923 (2013.01); G01S 13/10 (2013.01); G01S 13/103 (2013.01); G01S 13/227 (2013.01); G01S 13/88 (2013.01); G01S 13/30 (2013.01);
Abstract

The present invention relates to a pulsed level gauge system comprising frequency control circuitry. If an acquired signal indicates that the time between the previous filling level determination and the present filling level determination is shorter than a predefined time, the frequency control circuitry controls at least one of a transmit signal generating circuitry and a reference signal generating circuitry comprised in the pulsed level gauge system using previous frequency control settings stored in memory. If the acquired signal indicates that the time between the previous filling level determination and the present filling level determination is longer than the predefined time, the frequency control circuitry iteratively regulates at least one of the transmit signal generating circuitry and the reference signal generating circuitry towards achieving a desired pulse repetition frequency difference between the pulse repetition frequency of the transmit signal and the pulse repetition frequency of the reference signal.


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