Device for measuring the mechanical load exerted by a fluid using an electromechanical transducer

US7698953B2 · kind B2 · utility

Assignees

• Institut Francais de Recherche Pour l'Exploitation de la Mer (IFREMER) · FR
• Institut Superieur de l'Electronique et du Numerique · FR

Inventors

• Bernard Hamonic · Paris, FR
• Max Mastail · Carquefou, FR
• Yves Mevel · Brest, FR
• Roland H. Person · Kelowna, CA
• Jean-Yves Ragon · Vertou, FR
• Alain Loussert · Brest, FR

Key dates

• Filing date: Dec 20, 2005
• Grant date: Apr 20, 2010
• Expiry date: Jul 9, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/02818
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measuring device comprising: a sensor (1) with at least one electromechanical transducer (10); at least one electrical generator connected to said transducer; and means for measuring the electrical input impedance of the transducer. Said sensor (1) has an empty space (12) passing therethrough within which a substance (14) can flow, and said transducer (10) is situated at the periphery of said empty space (12) in such a manner as to be subjected to a mechanical load characteristic of the substance (14) flowing in said space (12), the measured electrical impedance being a function of said load. The device is suitable for use in a measuring apparatus seeking to determine the density of the substance (14) flowing inside said tubular space (12).