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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.
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公开(公告)号：US20220091072A1
公开(公告)日：2022-03-24
申请号：US17414423
申请日：2019-12-10
Applicant: Endress+Hauser Flowtec AG
Inventor： Oliver Berberig , Jens Rautenberg , Beat Kissling , Sascha Grunwald , Rudolf Braun , Achim Stark , Klaus Beringer , Stefan Rüger , Theo Gerald Hofmann
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.
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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
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.
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公开(公告)号：US11982647B2
公开(公告)日：2024-05-14
申请号：US17414423
申请日：2019-12-10
Applicant: Endress+Hauser Flowtec AG
Inventor： Oliver Berberig , Jens Rautenberg , Beat Kissling , Sascha Grunwald , Rudolf Braun , Achim Stark , Klaus Beringer , Stefan Rüger , Theo Gerald Hofmann
IPC: G01N29/24 , G01F1/66 , G01F1/86 , G01N29/024 , G01N29/44
CPC classification number: G01N29/2437 , G01N29/4463 , G01N2291/02809 , G01N2291/02818 , G01N2291/0423 , G01N2291/0427
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.
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