-
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：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.
-
公开(公告)号：US20230324207A1
公开(公告)日：2023-10-12
申请号：US18042233
申请日：2021-07-16
Applicant: Endress+Hauser Flowtec AG
Inventor： Oliver Berberig , Andreas Berger , Manuel Martini , Achim Stark , Rudolf Braun , Jens Rautenberg
Abstract: An ultrasonic measuring device for measuring properties of a medium located in a measuring tube includes a measuring tube wall and a measuring tube lumen. The measuring tube wall has at least one acoustic region designed to be excited into Lamb oscillations. A pair of ultrasonic transducers are located in a coupling region and are designed to excite Lamb oscillations or to detect Lamb oscillations in the respective coupling regions. The device also includes an electronic measuring/operating circuit. A supporting device is designed to support at least parts of the acoustic region against media pressure, and at least one supporting member is designed to absorb forces generated by media pressure. The supporting member has at least one decoupling device which is designed to reduce ultrasonic input from at least one associated acoustic region into the supporting member, and vice versa.
-
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.
-
-
-
Search Results
4
records
(took 0.06 seconds)
