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公开(公告)号：US12098939B2
公开(公告)日：2024-09-24
申请号：US17757370
申请日：2020-11-20
Applicant: Endress+Hauser Flowtec AG
Inventor： Ennio Bitto , Hao Zhu , Martin Josef Anklin , Wolfgang Drahm
IPC: G01F1/84
CPC classification number: G01F1/8413 , G01F1/8477
Abstract: A measuring tube arrangement of a measuring device for detecting a mass flow rate of a flowable medium includes: two measuring tubes for conducting the medium, wherein the measuring tubes each have an inlet and an outlet, wherein the measuring tubes are bent at least once between the inlet and outlet; a coupler arrangement for mechanically coupling the two measuring tubes, wherein the coupler arrangement has at least two coupler elements, wherein one coupler element is arranged at the inlet, and one coupler element is arranged at the outlet; two magnet arrangements, each having at least two magnets, arranged on the measuring tubes, wherein precisely one magnet arrangement is arranged on one measuring tube; and a connecting body configured to mechanically detachably connect the measuring tube arrangement to a carrier unit, wherein the connecting body is connected to the inlet and to the outlet of the respective measuring tubes.
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公开(公告)号：US12055423B2
公开(公告)日：2024-08-06
申请号：US17416834
申请日：2019-11-21
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Wolfgang Drahm , Alfred Rieder
Abstract: A method for ascertaining a physical parameter of a liquid, which has a gas charge using a measuring transducer having a measuring tube for conveying the medium. The measuring tube executes oscillations in bending oscillation mode. The method includes: exciting the measuring tube with an eigenfrequency of a bending oscillation mode—or f1-mode, ascertaining a suppressed excitation frequency, at which the oscillation amplitude of the measuring tube is minimum; identifying the frequency as the resonant frequency of the gas-charged liquid; ascertaining a density correction term as a function of the resonant frequency for correcting a preliminary density measured value and/or mass flow correction term as a function of the resonant frequency for correcting a preliminary mass flow rate measured value, and/or ascertaining the velocity of sound in the gas-charged liquid in the measuring tube as a function of the resonant frequency.
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公开(公告)号：US11550342B2
公开(公告)日：2023-01-10
申请号：US16331250
申请日：2017-08-23
Applicant: Endress+Hauser Flowtec AG
Inventor： Guido Horoba , Helmut Zeislmeier , Wolfgang Drahm , Rainer Höcker
Abstract: A gas separator for separating a multiphase medium containing a gas and a liquid includes a tubular basic unit having a longitudinal axis, an intake for a gaseous medium, a liquid outlet and a gas outlet. The tubular basic unit has an intake region and a discharge region. The gas separator includes, between the intake region and the discharge region, a weir having a guiding surface, over which the medium can flow to form a shallow water region. The gas contained in the medium can escape from the medium in the shallow water region and be led away from the gas separator through the gas outlet. The disclosure is also directed to an apparatus for registering flow of at least one component of a multiphase medium.
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公开(公告)号：US20210396565A1
公开(公告)日：2021-12-23
申请号：US17357215
申请日：2021-06-24
Applicant: Endress+Hauser Flowtec AG
Inventor： Wolfgang Drahm , Hao Zhu , Alfred Rieder , Michael Wiesmann , Patrick Oudoire
Abstract: A measuring system comprises: a measuring transducer; transmitter electronics; at least one measuring tube; and at least one oscillation exciter. The transmitter electronics delivers a driver signal for the at least one oscillation exciter, and for feeding electrical, excitation power into the at least one oscillation exciter. The driver signal, has a sinusoidal signal component which corresponds to an instantaneous eigenfrequency, and in which the at least one measuring tube can execute, or executes, eigenoscillations about a resting position. The eigenoscillations have an oscillation node and in the region of the wanted, oscillatory length exactly one oscillatory antinode. The driver signal has, a sinusoidal signal component with a signal frequency, which deviates from each instantaneous eigenfrequency of each natural mode of oscillation of the at least one measuring tube, in each case, by more than 1 Hz and/or by more than 1% of said eigenfrequency.
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公开(公告)号：US20180045545A1
公开(公告)日：2018-02-15
申请号：US15556058
申请日：2016-02-15
Applicant: Endress + Hauser Flowtec AG
Inventor： Nikolai Fink , Frank Schmalzried , Wolfgang Drahm
IPC: G01F1/58
Abstract: A magneto-inductive flow measuring device for measuring the flow of a flowable medium is described. The flow measuring device includes a measuring tube, a pair of coils, which are arranged opposite one another on the measuring tube and which are designed to produce an alternating magnetic field, which can be turned on and off, and which extends essentially transversely to the longitudinal axis of the measuring tube, as well as a pair of permanent magnets, which are arranged opposite one another on the measuring tube and which are designed to produce a permanent magnetic field, which extends essentially transversely to the longitudinal axis of the measuring tube. Moreover, the flow measuring device includes one or more pairs of measuring electrodes arranged opposite one another on the measuring tube, of which one pair of measuring electrodes is designed, in the case of turned off alternating magnetic field, to tap a measurement voltage induced by the permanent magnetic field, and an evaluation unit, which is designed, in the case of turned off alternating magnetic field, to monitor the measurement voltage induced by the permanent magnetic field, at least in the case of a predefined change of the measurement voltage, to turn on the alternating magnetic field and, by means of the alternating magnetic field, to determine a measured value for the flow.
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Patent Agency Ranking
公开(公告)号：US12270769B2
公开(公告)日：2025-04-08
申请号：US18257696
申请日：2021-11-26
Applicant: Endress+Hauser Flowtec AG
Inventor： Anne Habermehl , Stefan Pflüger , Wolfgang Drahm
Abstract: A method for determining a deposit property of a variable deposit on an end face of a first microwave antenna of an assembly for determining a property of a multiphase medium that is to be conveyed, wherein the first microwave antenna is arranged in a first receptacle of the measuring pipe in a medium-contacting manner, wherein the method comprises emitting an excitation signal by means of the first microwave antenna, wherein the excitation signal comprises a sequence of high-frequency signals; receiving a reflected excitation signal by means of the first microwave antenna; determining a first test quantity on the basis of the reflected excitation signal; and determining on the basis of the first test quantity the deposit property of the variable deposit, in particular a variable dependent on a deposit thickness of the variable deposit.
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公开(公告)号：US20250052694A1
公开(公告)日：2025-02-13
申请号：US18721344
申请日：2022-11-22
Applicant: Endress+Hauser Flowtec AG
Inventor： Anne Habermehl , Wolfgang Drahm , Raphael Kuhnen , Christof Huber
Abstract: A microwave measuring device comprises a measuring tube for conducting the medium; a first microwave antenna designed to generate a variable microwave signal and to emit said signal into the medium; and a magnetic-field-sensitive measuring device for determining a magnetic field and comprising a measuring device component having an optically excitable material, the microwave signal acting on the optically excitable material; an optical excitation device designed to optically excite the optically excitable material; and an optical detection device designed to provide a detection signal correlating with a light emitted by the optically excitable material. An evaluation circuit is designed to determine a magnetic field and/or a change in the magnetic field on the basis of the detection signal.
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公开(公告)号：US20250020563A1
公开(公告)日：2025-01-16
申请号：US18714644
申请日：2022-11-28
Applicant: Endress+Hauser Flowtec AG
Inventor： Stefan Pflüger , Hao Zhu , Wolfgang Drahm
Abstract: A method for detecting a foreign body in a flowable medium includes determining a first time curve of a first measured value using a first measuring device for determining a physical density of the medium. The method also includes determining a second time curve of a second measured value using a second measuring device for ascertaining a relative permittivity of the medium. A temporal correlation between the first curve and the second curve is determined, and pairs of measured values of the first measured value and the second measured value are detected. The method further includes checking whether the detected pairs of measured values within a predefined tolerance interval correspond to the correlation of at least one predefined function. If this is not the case, it is established that the foreign body is present in the medium.
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公开(公告)号：US20240418553A1
公开(公告)日：2024-12-19
申请号：US18814841
申请日：2024-08-26
Applicant: Endress+Hauser Flowtec AG
Inventor： Ennio Bitto , Hao Zhu , Martin Josef Anklin , Wolfgang Drahm
IPC: G01F1/84
Abstract: A measuring tube arrangement of a measuring device for detecting a mass flow rate of a flowable medium includes: two measuring tubes for conducting the medium, wherein the measuring tubes each have an inlet and an outlet, wherein the measuring tubes are bent at least once between the inlet and outlet; a coupler arrangement for mechanically coupling the two measuring tubes, wherein the coupler arrangement has at least two coupler elements, wherein one coupler element is arranged at the inlet, and one coupler element is arranged at the outlet; two magnet arrangements, each having at least two magnets, arranged on the measuring tubes, wherein precisely one magnet arrangement is arranged on one measuring tube; and a connecting body configured to mechanically detachably connect the measuring tube arrangement to a carrier unit, wherein the connecting body is connected to the inlet and to the outlet of the respective measuring tubes.
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10.发明授权公开(公告)号：US12098944B2
公开(公告)日：2024-09-24
申请号：US17754074
申请日：2020-08-20
Applicant: Endress+Hauser Flowtec AG
Inventor： Alfred Rieder , Hao Zhu , Wolfgang Drahm , Andreas Güttler
Abstract: An arrangement includes a pipeline and a Coriolis volumetric flow meter for measuring a mass flow rate of a medium flowing through the pipeline. A first pressure sensor is attached at an inlet-side of the pipeline and a second pressure sensor is attached at an outlet-side of the pipeline, or wherein a differential pressure sensor is configured to detect a difference between an inlet-side and an outlet-side. The pressure sensors and/or the differential pressure sensor are configured to measure a media pressure and to determine, for each differential pressure, a volumetric flow velocity of the medium through the pipeline. A first monitoring sensor is attached at an inlet-side portion of the pipeline and a second monitoring sensor is attached at an outlet-side portion of the pipeline, wherein the monitoring sensors are configured to monitor a measurement variable different from the media pressure to identify a static media state.
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