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公开(公告)号：US12111192B2
公开(公告)日：2024-10-08
申请号：US17628602
申请日：2020-06-18
Applicant: Endress+Hauser Flowtec AG
Inventor： Simon Mariager
CPC classification number: G01F1/588 , G01F1/60 , G01N11/00 , G01N2011/0026
Abstract: A magnetic-inductive flow meter includes: a measuring tube for conducting a flowable medium, the measuring tube having a wall; at least three measuring electrodes arranged in the wall to form a galvanic contact with the flowing medium; a magnetic field-generating device for generating a magnetic field that passes through the medium; a measuring circuit designed to ascertain at least one first measurement variable, wherein measured values of the first measurement variable are ascertained at a first measuring electrode pair; and an analysis circuit designed to ascertain a Reynolds number and/or a kinematic viscosity value of the medium in the measuring tube using measured values for the first measurement variable and a second measurement variable, which differs from the first measurement variable, the measured values of the second measurement variable being ascertained at a second measuring electrode pair.
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公开(公告)号：US11852514B2
公开(公告)日：2023-12-26
申请号：US17299987
申请日：2019-11-11
Applicant: Endress+Hauser Flowtec AG
Inventor： Simon Mariager
IPC: G01F1/58
CPC classification number: G01F1/588
Abstract: A magnetic-inductive flowmeter includes: a measuring tube; a magnetic field generator including a pole shoe for producing in the medium a magnetic field extending perpendicular to the longitudinal direction, wherein the pole shoe subtends a field central angle; and at least two measuring electrode components in galvanic contact with the medium, wherein the measuring electrode components have a circular arc length, which subtends an electrode central angle, wherein the field and electrode central angles are so adapted relative to one another that the flowmeter is insensitive to departures from a rotationally symmetric flow to a degree such that the magnetic-inductive flowmeter has in a test measurement a measurement error of flow velocity and/or a measurement error of volume flow of less than 0.2%.
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公开(公告)号：US20220404185A1
公开(公告)日：2022-12-22
申请号：US17638504
申请日：2020-08-03
Applicant: ENDRESS+HAUSER FLOWTEC AG
Inventor： Beat Tschudin , Simon Mariager
Abstract: A magnetic-inductive flow meter includes: a housing; a first and a second measurement electrode in galvanic contact with a flowing medium in a pipe; a magnetic field-generating device positioned in the housing and including a measurement circuit configured to determine a first measurement variable, and wherein measurement values of the first measurement variable are measured between two measurement electrodes or at a measurement electrode in relation to a reference potential; and an evaluation circuit configured to determine a Reynolds number and/or a kinematic viscosity value of the medium using measurement values of the first measurement variable and of a second measurement variable, which differs from the first measurement variable, wherein the measurement electrodes are positioned such that, during a test measurement, quotients of current measurement values of the first and of the second measurement variable correspond bijectively with the Reynolds number of the medium in the pipe.
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公开(公告)号：US11313708B2
公开(公告)日：2022-04-26
申请号：US16954028
申请日：2018-11-14
Applicant: Endress+Hauser Flowtec AG
Inventor： Michael Linnert , Simon Mariager
Abstract: The present disclosure relates to a method for operating a magnetoinductive flowmeter in which, during a constant phase having a constant magnetic field, a plurality of raw measured values of the raw measurement voltage are determined, the raw measurement voltage including a flow-dependent component, an interference component and a noise component, wherein each raw measured value assigned a flow measured value and an interference voltage value, wherein a raw measured value from a preceding first constant phase and a raw measured value from a second constant phase following the first constant phase are used to calculate a second flow measured value and a second interference voltage value of the interference component, wherein first flow measured values from the first constant phase and/or second constant phase are corrected using the knowledge of the second flow measured value and the calculated second interference voltage value.
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公开(公告)号：US20230417584A1
公开(公告)日：2023-12-28
申请号：US18252373
申请日：2021-09-23
Applicant: Endress+Hauser Flowtec AG
Inventor： Tobias Brütsch , Simon Mariager , Markus Rüfenacht , Werner Wohlgemuth
Abstract: The present disclosure relates to a magnetic-inductive flowmeter, comprising: a measuring pipe for conducting a medium, wherein the measuring pipe comprises an electrically insulating measuring pipe body; a device for generating a magnetic field that penetrates the measuring pipe body; a device for detecting an induced voltage, which is a function of a flow rate; a reference electrode; an electrode assembly for detecting damage to the measuring pipe body, wherein the electrode assembly is electrically insulated from the reference electrode and/or the medium by the measuring pipe body; a measuring circuit configured to measure a variable that is a function of an electrical impedance between the electrode assembly and the reference electrode.
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Patent Agency Ranking
公开(公告)号：US11781891B2
公开(公告)日：2023-10-10
申请号：US17256298
申请日：2019-05-23
Applicant: Endress+Hauser Flowtec AG
Inventor： Thomas Sulzer , Simon Mariager , Simon Triebenbacher , Michael Fuchs
Abstract: A magnetic-inductive flowmeter includes a measuring tube for conveying a medium, a magnetic field generating coil and at least two measuring electrodes for sensing a measurement voltage inductively generated in the medium, including a conductive coating internally selectively applied in the measuring tube for forming a galvanic contacting of the medium.
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公开(公告)号：US20220388085A1
公开(公告)日：2022-12-08
申请号：US17756001
申请日：2020-11-09
Applicant: Endress+Hauser Flowtec AG
Inventor： Lüder Bosse , Simon Mariager , Pierre-Jean Ober , Werner Wohlgemuth
Abstract: A directing apparatus for orienting an arc of an arc welding device for arc welding, in particular for TIG welding, using a magnetically moved arc, comprising: a retaining device having an opening for receiving a welding head of the arc welding device; one or more solenoid coils for forming a magnetic field for deflecting an arc generated by a welding device in the opening; and at least two bent pole shoes comprising at least two legs for focusing the magnetic field, a first of the legs of each pole shoe being affixed to the retaining device and/or to the solenoid coil and a second of the legs being oriented at an angle of less than 130° to the first leg.
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公开(公告)号：US20220057241A1
公开(公告)日：2022-02-24
申请号：US17414396
申请日：2019-11-13
Applicant: Endress+Hauser Flowtec AG
Inventor： Simon Mariager
IPC: G01F1/58
Abstract: A magnetic-inductive flow meter for measuring flow velocity or volume flow rate of a medium includes: a measuring tube having a first cross-section and a middle segment, which has a second cross-section, between inlet side and outlet side end planes, wherein the first cross-sectional area is greater than the second cross-sectional area; a pole shoe or a saddle coil, which subtends the measuring tube with a maximum central angle; and an electrode system having two electrode pairs, wherein a central angle in the second cross-section defines a minimum circular sector in which the electrodes located on a side of the measuring tube are distributed, wherein the electrode pairs are arranged in the middle segment such that the central angle and the maximum central angle are adapted relative to one another such that the flow meter is insensitive to departures from a rotationally symmetric flow.
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公开(公告)号：US11913816B2
公开(公告)日：2024-02-27
申请号：US17414396
申请日：2019-11-13
Applicant: Endress+Hauser Flowtec AG
Inventor： Simon Mariager
IPC: G01F1/58
CPC classification number: G01F1/588
Abstract: A magnetic-inductive flow meter for measuring flow velocity or volume flow rate of a medium includes: a measuring tube having a first cross-section and a middle segment, which has a second cross-section, between inlet side and outlet side end planes, wherein the first cross-sectional area is greater than the second cross-sectional area; a pole shoe or a saddle coil, which subtends the measuring tube with a maximum central angle; and an electrode system having two electrode pairs, wherein a central angle in the second cross-section defines a minimum circular sector in which the electrodes located on a side of the measuring tube are distributed, wherein the electrode pairs are arranged in the middle segment such that the central angle and the maximum central angle are adapted relative to one another such that the flow meter is insensitive to departures from a rotationally symmetric flow.
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10.发明申请公开(公告)号：US20210164814A1
公开(公告)日：2021-06-03
申请号：US17045543
申请日：2019-03-07
Applicant: Endress+Hauser Flowtec AG
Inventor： Simon Mariager
Abstract: The present disclosure relates to a magnetic-inductive flowmeter for measuring flow velocity of a medium, comprising a measuring tube; an apparatus positioned toward a cross-section of the measuring tube for producing a magnetic field extending perpendicular to a longitudinal direction, wherein the apparatus includes a segment coupling the magnetic field into the medium, wherein the segment surrounds the measuring tube over a first angle; and an electrode system having at least two electrode pairs adapted to register a voltage induced in the medium, wherein a second angle defines a minimum circular sector in which the electrodes located on one side of the measuring tube are distributed, wherein first and second angles are so matched to one another that the flowmeter is insensitive to departures from a rotationally symmetric flow such that the flowmeter in a test measurement has a measurement error of flow velocity less than 1.0%.
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