Ultrasonic flow meter and method for ultrasonic flow metering

US12339148B2 · kind B2 · utility

Assignee

• Sciosense B.V. · NL

Inventors

• Stefan Kern · Frankfurt am Main, DE
• Faik Coskunsu · Karlsruhe, DE

Key dates

• Filing date: Mar 16, 2021
• Grant date: Jun 24, 2025
• Expiry date: Mar 5, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/667
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In an embodiment an ultrasonic flow meter includes a first transducer and a second transducer, a first impedance circuit and a second impedance circuit, each of the first and second impedance circuits having a variable impedance, a first terminal coupled to the first transducer via the first impedance circuit, a second terminal coupled to the second transducer via the second impedance circuit, a signal generator with a signal output and a signal evaluation circuit with a signal input, wherein the signal output and the signal input are coupled to the first and second terminals, and wherein the signal evaluation circuit includes a time-to-digital converter and a first comparator that couples the signal input to a first input of the time-to-digital converter, and a control circuit that is coupled to the signal generator, the signal evaluation circuit and the variable impedance.