公开(公告)号：US20250035588A1

公开(公告)日：2025-01-30

申请号：US18720102

申请日：2022-11-21

Applicant: Endress+Hauser Flowtec AG

Inventor： Jens Rautenberg ,  Achim Stark ,  Stefan Rüger ,  Klaus Beringer ,  Rudolf Braun ,  Oliver Berberig ,  Michael Münch

IPC: G01N29/02

Abstract: A method for operating an ultrasonic measuring device for measuring a property of a medium includes: an arrangement of at least two pair of ultrasonic transducers for emitting and receiving ultrasonic signals across a signal path through a fluid; a holding apparatus having a wall in contact with the medium and a flat wall section for holding the ultrasonic transducers; an electronic circuit configured to operate the ultrasonic transducers and to provide measured values of the property, wherein the ultrasonic transducers form Lamb oscillations in the respectively associated wall, wherein at least two pair of the at least two pair of ultrasonic transducers each excite and capture different modes of Lamb oscillations, wherein the different modes are excited in groups, wherein a time delay between temporally adjacent emissions of ultrasonic signals is shorter than a shortest propagation time of the ultrasonic signals between associated ultrasonic transducers.

公开(公告)号：US20240393154A1

公开(公告)日：2024-11-28

申请号：US18693586

申请日：2022-08-17

Applicant: Endress+Hauser Flowtec AG

Inventor： Oliver Berberig ,  Andreas Berger ,  Sascha Grunwald ,  Klaus Beringer ,  Rudolf Braun ,  Stefan Natterer ,  Michael Münch ,  Jens Rautenberg

IPC: G01F1/667 ,  G01F1/66 ,  G01F25/10

Abstract: A method for operating an ultrasonic measuring device, which includes: an arrangement of ultrasonic transducers for emitting and receiving ultrasonic signals along at least two signal paths through a fluid, wherein the arrangement is held by a holding apparatus having at least one wall, wherein sections of the signal paths run through at least one of the at least one wall, wherein signal path sections of at least two signal paths in the fluid are of different length; and an electronic measuring/operating circuit configured to perform the method of, in a first method step, comparing intensities of ultrasonic signals along signal paths having signal path sections of different length in the fluid and, in a second method step, determining a damping property of the fluid and an acoustic coupling property between the wall and the fluid therefrom.