公开(公告)号：US12018966B2

公开(公告)日：2024-06-25

申请号：US17416067

申请日：2019-11-21

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Reinhard Huber ,  Gerhard Eckert ,  Marco Oliver Scherrer

IPC: G01F1/84 ,  G01F15/02 ,  G01F15/10 ,  G01F15/14

CPC classification number: G01F1/8431 ,  G01F1/8436 ,  G01F1/8477 ,  G01F15/024 ,  G01F15/10 ,  G01F15/14

Abstract: The flow measuring system comprises a measuring transducer having a tube arrangement to convey a flowing fluid, an exciter arrangement for forced mechanical oscillations of the tube arrangement, and a sensor arrangement for registering mechanical oscillations of the tube arrangement. The measuring system further comprises a measuring and operating electronics electrically coupled with the exciter arrangement and the sensor arrangement. The measuring system has two driver circuits and two measurement transmitter circuits. The tube arrangement includes two flow dividers and four connected tubes adapted to be flowed through by the measured substance. The exciter arrangement includes two oscillation exciters, and the sensor arrangement includes four oscillation sensors. The first measurement transmitter circuit processes measurement signals from two oscillation sensors and outputs such to the second measurement transmitter circuit The second measurement transmitter circuit processes oscillation measurement signals of the other two oscillation sensors and ascertains total flow measured values.

公开(公告)号：US20240195102A1

公开(公告)日：2024-06-13

申请号：US18554859

申请日：2022-04-08

Applicant: Endress+Hauser Flowtec AG

Inventor： Markus Beissert ,  Frank Voigt ,  Thilo Ihringer

IPC: H01R13/11 ,  H01R24/64

CPC classification number: H01R13/11 ,  H01R24/64 ,  H01R2201/02

Abstract: The present disclosure relates to a high-frequency plug connection for high-frequency-based field devices, consisting of plugs and corresponding sockets. The high-frequency plug connection is characterized in that the at least one plug is resiliently enclosed by an enclosure such that this/these plug(s) is/are moveable radially with respect to its/their plugging axis. This has the advantage of reducing the risk of jamming against the enclosure when the plugs are inserted in the corresponding sockets, during fastening of the circuit board substrate on which the sockets are arranged. A modular design of the high-frequency-based field device, and the manufacturability thereof, are simplified as a result.

公开(公告)号：US12007268B2

公开(公告)日：2024-06-11

申请号：US17298050

申请日：2019-10-31

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Wolfgang Drahm

IPC: G01F7/00 ,  G01F1/34 ,  G01F1/84

CPC classification number: G01F7/005 ,  G01F1/34 ,  G01F1/84 ,  G01F7/00

Abstract: A method for determining a flowed amount of a medium includes using a first flow measuring transducer according to a first measuring principle and a second flow measuring transducer according to a second measuring principle. The measured values of the first transducer are more reliable in first states of the medium than measured values of the second transducer, and the second measured values are more reliable in second states than the first measured values. A contribution to the flowed amount is ascertained based on the more reliable measured values. The contribution to the flowed amount based on the second measured values is ascertained via a transfer function. An updated version of the transfer function is ascertained when the first measured values are more reliable, and the flowed amount earlier ascertained based on the second measured values is corrected as a function of the updated transfer function.

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：US11971281B2

公开(公告)日：2024-04-30

申请号：US17603140

申请日：2020-03-31

Applicant: Endress+Hauser Flowtec AG

Inventor： Anastasios Badarlis ,  Stephan Gaberthüel ,  Alexander Grün ,  Hanno Schultheis ,  Tobias Baur ,  Martin Barth ,  Martin Arnold ,  Mathieu Habert

IPC: G01F1/684 ,  G01F15/14

CPC classification number: G01F1/684 ,  G01F15/14

Abstract: A method for producing a probe of a thermal flowmeter for measuring mass flow of a medium in a measuring tube, wherein a probe core is provided arranged loosely in a probe sleeve having a longitudinal axis, wherein the probe sleeve is deformed relative to the longitudinal axis completely radially in the direction of the probe core by means of high energy rate forming, wherein a material-locking connection between probe sleeve and probe core results and a rod is formed, wherein the rod represents a base body that is used for probe production, wherein a deformation speed reaches values greater than 100 m/s, and wherein the high energy rate forming includes explosive forming or magnetic forming.

公开(公告)号：US20240003798A1

公开(公告)日：2024-01-04

申请号：US18255265

申请日：2021-11-26

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Gerhard Eckert

IPC: G01N9/32 ,  G01F1/84

CPC classification number: G01N9/32 ,  G01F1/8477 ,  G01F1/8422

Abstract: A density measurement reading of a medium is determined using a Coriolis mass flow transmitter with two oscillators with pairs of measuring tubes arranged one above the other in parallel flow and leading into collectors. The mounting of the transmitter in the pipeline causes mechanical voltages that influence the oscillators via the collectors. The method includes excitation of a vibration mode of the oscillators and a determination of the natural frequency of the excited vibration modes. The method also includes a determination of a preliminary density measurement reading based on the natural frequencies and a deviation between the preliminary density measurement readings. A corrected density measurement reading is determined using a model, which determines and corrects the influence of mechanical voltages on the density measurement based on the deviation.

公开(公告)号：US20230408315A1

公开(公告)日：2023-12-21

申请号：US18254779

申请日：2021-10-28

Applicant: Endress+Hauser Flowtec AG

Inventor： Benjamin Schwenter ,  Ennio Bitto

IPC: G01F1/84

CPC classification number: G01F1/8422 ,  G01F1/8427

Abstract: A Coriolis flow meter, includes: a measuring tube arrangement with at least one measuring tube and a fixing body arrangement; at least one oscillation exciter and at least one oscillation sensor; a support apparatus with seat and fixing apparatus, wherein the fixing apparatus has at least one swingable fixing element, wherein the fixing apparatus is adapted to connect the measuring tube arrangement, for example, the at least one measuring tube, via the fixing body arrangement mechanically releasably with the support apparatus body, wherein the at least one fixing element is adapted in the case of connecting the measuring tube arrangement with the support apparatus body to exert a bending force on the fixing body arrangement for elastically bending the fixing body arrangement.

公开(公告)号：US11846533B2

公开(公告)日：2023-12-19

申请号：US17288965

申请日：2019-09-18

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu

IPC: G01F1/84 ,  G01K13/00

CPC classification number: G01F1/8477 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8431 ,  G01F1/8436 ,  G01K13/00

Abstract: A method for correcting a measured value of a measured variable with reference to a medium flowing through at least two measuring tubes, wherein each measuring tube is excited by an oscillation exciter to execute oscillations, and wherein the oscillations of each measuring tube are registered by oscillation sensors, wherein an electronic circuit monitors at least two of the following measured variables or, in each case, a measured variable derived therefrom: phase difference between measurement signals, resonant frequency, ratio of an oscillation exciter electrical current amplitude to a measuring tube oscillation amplitude, the method including: determining a plausibility; and, wherein upon failing a plausibility requirement of at least one of the measured variables, determining measured values of the measured variables of at least one, first/second measuring tube as a function of corresponding measured values of the measured variables of at least one, second/first measurement tube.

公开(公告)号：US11802781B2

公开(公告)日：2023-10-31

申请号：US17299527

申请日：2019-11-11

Applicant: Endress+Hauser Flowtec AG

Inventor： Heinz Rufer ,  Frank Voigt ,  Steffen Ziegler

IPC: G01F1/58 ,  G01F25/10

CPC classification number: G01F1/588 ,  G01F25/10

Abstract: A magnetic-inductive flowmeter for ascertaining flow velocity and/or volume flow of a medium includes a measuring tube for conveying the medium, a magnetic field producing apparatus and at least one electrode assembly, which is installed in the measuring tube such that it forms a galvanic contact with the medium, wherein the electrode assembly has an electrode body, wherein the electrode body is stylus-shaped and has a front end surface, characterized in that a pressure measuring transducer is coupled with the electrode body, wherein the pressure measuring transducer is contactable with the pressure acting on the front end surface, and the electrode assembly includes a temperature sensor, which is adapted to ascertain a measurement signal dependent on temperature of the medium.

公开(公告)号：US11796364B2

公开(公告)日：2023-10-24

申请号：US17413449

申请日：2019-11-21

Applicant: Endress+Hauser Flowtec AG

Inventor： Benjamin Schwenter ,  Marc Werner ,  Claude Hollinger ,  Gebhard Gschwend

IPC: G01F1/84

CPC classification number: G01F1/8427 ,  G01F1/8422 ,  G01F1/8431 ,  G01F1/8477

Abstract: The invention relates to a Coriolis measuring sensor for detecting a mass flow rate or a density of a medium flowing through a measurement tube of the Coriolis measuring instrument. The measurement tube has an inlet and an outlet designed to convey the medium between the inlet and the outlet; an exciter; and two sensors; the measuring sensor comprising a supporting element having a chamber designed to house the measurement tube at least in portions. The magnet device comprises a magnetically conductive holder for magnets and a first pair of magnets arranged on the holder on a first face of the coil device, with the magnets designed to cause a magnetic field perpendicularly to a cross-sectional plane of the coil, and the magnetic field of a first magnet of the pair is oriented so as to be opposite to the magnetic field of a second magnet of the pair.