Liquid level sensing system

US8695420B1 · kind B1 · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Valentin Korman · Huntsville, US
• John T. Wiley · Huntsville, US
• Amanda G. Duffell · Gurley, US

Key dates

• Filing date: Jun 30, 2010
• Grant date: Apr 15, 2014
• Expiry date: Apr 5, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F23/2924
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A liquid level sensing system includes waveguides disposed in a liquid and distributed along a path with a gap between adjacent waveguides. A source introduces electromagnetic energy into the waveguides at a first end of the path. A portion of the electromagnetic energy exits the waveguides at a second end of the path. A detector measures the portion of the electromagnetic energy exiting the second end of the path.