Ultrasonic measuring device

US11982647B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Oliver Berberig · Weil am Rhein, DE
• Jens Rautenberg · Coburg, DE
• Beat Kissling · Reinach, CH
• Sascha Grunwald · Steinen, DE
• Rudolf Braun · Ahorn, DE
• Achim Stark · Dörfles-Esbach, DE
• Klaus Beringer · Untersiemau, DE
• Stefan Rüger · Jena, DE
• Theo Gerald Hofmann · Jena, DE

Key dates

• Filing date: Dec 10, 2019
• Grant date: May 14, 2024
• Expiry date: Feb 3, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/045
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An ultrasound instrument for detecting a measured value of a medium includes a measurement chamber having a chamber wall and a longitudinal axis; a pair of ultrasound transducers configured to transmit ultrasound signals along a signal path between ultrasound transducers of the pair through the measurement chamber and to receive ultrasound signals, wherein the signal path includes a signal reflection on a reflection surface, wherein the chamber wall in a region of the reflection surface opposite a first chamber side is configured to prevent a reflection of an ultrasound signal on a chamber outer surface of the chamber wall in the direction of the signal path, wherein the chamber wall has, in the region of the reflection surface, a maximum wall thickness which is at least a factor of 1.5 greater than a Rayleigh wavelength, associated with a central frequency, of the ultrasound signal in the chamber wall.