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:
Jan. 01, 2019
Filed:
Dec. 19, 2014
Applicant:
Honeywell International Inc., Morristown, NJ (US);
Inventors:
Assignee:
Honeywell International Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 23/296 (2006.01); G01N 29/036 (2006.01); G01N 29/22 (2006.01); G01N 29/44 (2006.01);
U.S. Cl.
CPC ...
G01F 23/296 (2013.01); G01F 23/2966 (2013.01); G01F 23/2968 (2013.01); G01N 29/036 (2013.01); G01N 29/222 (2013.01); G01N 29/4427 (2013.01); G01N 2291/02818 (2013.01); G01N 2291/02836 (2013.01); G01N 2291/0422 (2013.01); G01N 2291/0427 (2013.01);
Abstract
A method for sensing at least one level parameter of at least one liquid in a tank. At least one bulk acoustic wave (BAW) sensor is positioned inside the tank. Electrodes of the BAW sensor are at least switchably connected to a positive feedback loop across an amplifier to provide an electronic oscillator. At least one acoustic viscosity measurement is determined from an output of the electronic oscillator, wherein the output of the electronic oscillator is different when the BAW sensor contacts the liquid as compared to when the BAW sensor contacts air. The level parameter is determined from the acoustic viscosity measurement.