EP4652432A2 - Débitmètre magnéto-inductif, ensemble de mesure de température et débitmètre doté d'un tel ensemble de mesure de température - Google Patents

Débitmètre magnéto-inductif, ensemble de mesure de température et débitmètre doté d'un tel ensemble de mesure de température

Info

Publication number
EP4652432A2
EP4652432A2 EP24712171.8A EP24712171A EP4652432A2 EP 4652432 A2 EP4652432 A2 EP 4652432A2 EP 24712171 A EP24712171 A EP 24712171A EP 4652432 A2 EP4652432 A2 EP 4652432A2
Authority
EP
European Patent Office
Prior art keywords
sealing element
measuring
measuring tube
medium
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24712171.8A
Other languages
German (de)
English (en)
Inventor
Patrick Werner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFM Electronic GmbH
Original Assignee
IFM Electronic GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IFM Electronic GmbH filed Critical IFM Electronic GmbH
Publication of EP4652432A2 publication Critical patent/EP4652432A2/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/584—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters constructions of electrodes, accessories therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/14—Casings, e.g. of special material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow

Definitions

  • the invention relates to a magnetic-inductive flow meter according to the preamble of claim 1, a temperature measuring arrangement according to the preamble of claim 11 and a flow meter according to the preamble of claim 21.
  • the law of induction is exploited in magnetic-inductive flow meters by generating a magnetic field using a magnetic field generating device, which usually has two energized magnetic coils, which is guided at least partially through the measuring tube, whereby the generated magnetic field has at least one component that runs perpendicular to the direction of flow.
  • each volume element of the flowing medium that moves through the magnetic field and has a certain number of charge carriers contributes to a measuring voltage that can be tapped via the electrodes with the field strength generated in this volume element.
  • the volume flow can be determined directly from the measured voltage if the diameter of the measuring tube is known.
  • the only prerequisite for using a magnetic-inductive flow meter is that the medium has a minimum conductivity.
  • the measuring tube is filled with the medium at least to the extent that the level of the medium is above the measuring electrodes.
  • Such measuring devices are well known, for example from the German patents DE 10 2007 004 827 B4 and DE 10 2007 004 826 B4, and are in Essentially characterized in that the magnetic coils and the electrodes are arranged directly on or in the wall of the measuring tube.
  • the measuring electrodes usually consist of a cylindrical base body and an electrode head which is in contact with the medium.
  • the electrode head is typically mushroom-shaped or conical, as is known from DE 10 2015 112 018 B3 or DE 10 2021 127 943 B3, for example, but can also have a conical outer contour directed towards the medium, as is known from CN 2 09 197 811 U.
  • Temperature is known to have a significant influence on the physical and chemical properties of the medium, which in turn can affect the measurement result. If the temperature of the medium is known, appropriate correction factors can be determined that make the measurement results comparable at different temperature conditions.
  • German patent DE 10 2010 001 993 B4 discloses a magnetic inductive flow meter with a temperature measuring device, whereby in addition to the temperature measurement, a measurement of a minimum conductivity is also possible.
  • the temperature sensors usually consist of a cylindrical base body and a sensor head, which is in contact with the medium.
  • the electrode head is typically mushroom-shaped, as is known, for example, from DE 10 2021 127 942 A1.
  • the measuring tube is lined or coated on the inside with a liner made of PFA or PTFE, for example. These materials are comparatively soft, so that, as can be seen from Fig. 3 of DE 10 2021 127 943 B3, the measuring electrodes, i.e. the undersides of the electrode heads, are drawn into the soft material during assembly, thus creating a hygienic seal between the measuring electrodes and the measuring tube.
  • the same sealing concept is also used for Application when a pin-shaped temperature sensor is arranged in such a measuring tube of a flow meter, since in addition to measuring the flow, the medium temperature is often also of interest.
  • a temperature sensor is known, for example, from DE 10 2021 127 942 A1.
  • a hygienic seal meets the requirements at least according to EHEDG or 3A and is characterized in particular by the absence of gaps and dead spaces in the area of the transition between the electrode head and the measuring tube or liner.
  • the object of the invention is to propose an alternative sealing of the measuring electrodes of the magnetic-inductive flow meter or the temperature sensor of a temperature measuring arrangement, which is also suitable for hygienic applications.
  • the invention in a first aspect, relates to a magnetic-inductive flow meter.
  • the focus of the invention is on measuring electrodes with a base body and an electrode head which is in contact with the medium and has a conical outer contour directed towards the medium.
  • the electrode head of each measuring electrode is arranged in an opening in the wall of the measuring tube.
  • a sealing element with a conical inner contour is located between the electrode head and the wall of the measuring tube.
  • the outer contour of the electrode head and the inner contour of the sealing element are at an angle to one another, so that maximum compression of the sealing element occurs exclusively in a quasi-linear sealing area facing the medium.
  • the angle is to be selected so that the outer contour and the inner contour come closer and closer to the medium, i.e. the inner and outer surfaces of the electrode head or sealing element taper towards the medium.
  • conical contours it should be noted that this term is not to be interpreted strictly in a mathematical-geometric sense and therefore Slight deviations from a conical shape, e.g. contours with a slight radius, are also included in this term.
  • the sealing element is also preferably made of polyetheretherketone (PEEK).
  • PEEK polyetheretherketone
  • various other materials for the measuring tube coating are also conceivable. Examples would be enamel/Rilsan/SOL-GEL or other non-conductive coatings.
  • the sealing element can also be made of various thermoplastics or elastomers. Material variants would be e.g. PSU, PPSU, PEI as well as elastomers such as FKM, EPDM or silicones or similar.
  • a sleeve with a through hole is arranged in the opening in the wall of the measuring tube, which is connected to the wall of the measuring tube in a material-locking manner, preferably by welding, and in whose through hole the sealing element and the measuring electrode are arranged.
  • the measuring tube and sleeve are preferably made of metal.
  • a first alternative to this advantageous development provides that the through hole of the sleeve also has a conical inner contour at least in part and the sealing element has a conical outer contour and is designed with a uniform thickness.
  • the sealing element can thus be made comparatively thin and the second conical inner and outer contour, which are arranged coaxially, creates a stop during assembly that limits the screw-in depth of the measuring electrode or the electrode head.
  • the outer contour of the sealing element and the inner contour of the sleeve are advantageously at an angle to one another, so that maximum compression of the sealing element occurs exclusively in the quasi-linear sealing area facing the medium.
  • a second alternative to this advantageous development provides that the through-hole of the sleeve is cylindrical and the sealing element has a cylindrical outer contour and is thicker in the area of the electrode base body than in the area of the electrode head.
  • An axial stop is preferably achieved here by forming a shoulder in the through-hole of the sleeve on which the sealing element rests with its end face opposite the medium.
  • maximum compression of the sealing element is achieved exclusively in the quasi-linear sealing area facing the medium, in that the sealing element is advantageously arranged with an oversize in the sleeve.
  • At least the transitions between the sealing element and the electrode head are flush. If the sleeve described above is present, the transitions between the measuring tube wall and the sleeve and between the sleeve and the sealing element are also flush.
  • the base bodies of the measuring electrodes have an external thread at their ends opposite the electrode head, onto which a nut is screwed so that the measuring electrodes are firmly connected to the measuring tube.
  • a spring element is arranged between the measuring tube and the nut coaxially to the longitudinal axis of the measuring electrodes. It is particularly advantageous in this design that the spring element is subjected to a defined preload by screwing on the nut, with a limiting element being arranged coaxially to the common longitudinal axis of the spring element and the measuring electrode, which is suitable for limiting the compression of the spring element.
  • the preload of the spring element which is preferably designed as a disc spring, generates a restoring force that guarantees the required surface pressure, and the limiting element can be used to adjust the spring force of the spring element and still transmit higher forces when retracting without the permissible tensions of the spring element being exceeded.
  • the invention relates to a temperature measuring arrangement.
  • the sensor head of the temperature sensor is arranged in an opening in the wall of the measuring tube and has a conical outer contour directed towards the medium.
  • a sealing element with a conical inner contour is arranged between the sensor head and the wall of the measuring tube.
  • the outer contour of the sensor head and the inner contour of the sealing element are at an angle to one another, so that maximum compression of the sealing element occurs exclusively in a quasi-linear sealing area facing the medium. The angle is to be selected so that the outer contour and the inner contour come closer and closer towards the medium, i.e. the inner and outer surfaces of the sensor head or sealing element taper towards the medium.
  • the sealing element is also preferably made of polyetheretherketone (PEEK).
  • PEEK polyetheretherketone
  • various other materials for the measuring tube coating are also conceivable. Examples would be enamel/Rilsan/SOL-GEL or other non-conductive coatings.
  • the sealing element can also be made of various thermoplastics or elastomers. Material variants would be e.g. PSU, PPSU, PEI as well as elastomers such as FKM, EPDM or silicones or similar.
  • a sleeve with a through hole is arranged in the opening in the wall of the measuring tube, which is connected to the wall of the measuring tube in a material-locking manner, preferably by welding and in whose through hole the sealing element and the temperature sensor are arranged.
  • the measuring tube and sleeve are preferably made of metal.
  • a first alternative to this advantageous development provides that the through hole of the sleeve also has a conical inner contour at least in part and the sealing element has a conical outer contour and is designed with a uniform thickness.
  • the sealing element can thus be made comparatively thin and the second conical inner and outer contour, which are arranged coaxially, creates a stop during assembly that limits the screw-in depth of the temperature sensor or the sensor head.
  • the outer contour of the sealing element and the inner contour of the sleeve are advantageously at an angle to one another, so that maximum compression of the sealing element occurs exclusively in the quasi-linear sealing area facing the medium.
  • a second alternative to this advantageous development provides that the through-hole of the sleeve is cylindrical and the sealing element has a cylindrical outer contour and is thicker in the area of the temperature sensor base body than in the area of the sensor head.
  • An axial stop is preferably achieved here by forming a shoulder in the through-hole of the sleeve on which the sealing element rests with its end face opposite the medium.
  • maximum compression of the sealing element is achieved exclusively in the quasi-linear sealing area facing the medium, in that the sealing element is advantageously arranged with an oversize in the sleeve.
  • At least the transitions between the sealing element and the sensor head are flush. If the sleeve described above is present, the transitions between the measuring tube wall and the sleeve and between the sleeve and the sealing element are also flush.
  • the base body of the temperature sensor has an external thread on the end opposite the sensor head, onto which a nut is screwed so that the temperature sensor is firmly connected to the measuring tube.
  • a spring element is arranged between the measuring tube and the nut, coaxial to the longitudinal axis of the temperature sensor.
  • the spring element is subjected to a defined preload when the nut is screwed on, with a limiting element being arranged coaxially to the common longitudinal axis of the spring element and temperature sensor, which is suitable for limiting the compression of the spring element.
  • the preload of the spring element which is preferably designed as a disc spring, generates a restoring force that guarantees the required surface pressure, and the limiting element can be used to adjust the spring force of the spring element and still transmit higher forces when it is pulled in, without the permissible stresses of the spring element being exceeded.
  • the invention relates to a flow meter.
  • the flow meter has a temperature measuring arrangement as described above.
  • Figure 1 is a sectional view of a magnetic-inductive flow meter according to the invention or a temperature measuring arrangement according to the invention according to a first embodiment
  • Figure 2 is an enlarged detail of a portion of Figure 1;
  • Figure 3 is an exploded view of Figure 2;
  • Figure 4 is an enlarged detail of a partial area of a magnetic-inductive flow meter according to the invention or of a temperature measuring arrangement according to the invention according to a second embodiment;
  • Figure 5 is an exploded view of Fig. 4 and Figure 6 is an enlarged view of a section of Fig. 4.
  • Figure 1 shows a sectional view of a magnetic-inductive flow meter 1 according to the invention, consisting of a measuring tube 2, on each of which a flange is arranged on the front side, and two measuring electrodes 10 with a corresponding structure.
  • a magnetic-inductive flow meter 1 consisting of a measuring tube 2, on each of which a flange is arranged on the front side, and two measuring electrodes 10 with a corresponding structure.
  • the magnetic field generating device required for the measurement has not been shown.
  • Figure 1 can also be seen as a sectional view of a temperature measuring arrangement 1 according to the invention, which consists of a measuring tube 2, on each of which a flange is arranged on the front side, and two temperature sensors 10.
  • the inside of the measuring tube 2 is coated with a comparatively hard and non-conductive material.
  • PEEK is particularly suitable for this due to its good chemical resistance and suitability for hygienic applications.
  • various other materials are also conceivable for the measuring tube coating. Examples would be enamel/Rilsan/SOL-GEL or other non-conductive coatings.
  • the measuring tube 2 is reshaped in order to obtain a flat surface. In the middle of this surface there is an opening 3 in which the measuring electrodes 10 or temperature sensors 10 are arranged.
  • Figure 2 shows an enlarged view of the area marked “A” in Figure 1 and Figure 3 shows an exploded view thereof, each of which shows a first embodiment of the invention.
  • a sleeve 4 with a through hole 4a is welded into the opening 3, the media-side surface of which is also coated.
  • the measuring electrode 10 or the temperature sensor 10 is inserted into the sleeve 4 with a sealing element 20.
  • the measuring electrode 10 consists of a cylindrical base body 11 and an electrode head 12, just as the temperature sensor 10 consists of a cylindrical base body 11 and a sensor head 12.
  • a temperature sensor (not shown in more detail) is arranged on the front side inside the sensor head 12, which is designed, for example, as a PTC or NTC element and is electrically contacted via strands that are guided through the base body 11.
  • the sealing element surrounds the measuring electrode 10 or the temperature sensor 10 essentially only in the area of the electrode head 12 or sensor head 12 and is advantageously also made of PEEK.
  • the electrode head 12 or sensor head 12 has a conical outer contour and the sealing element 20 has a conical inner contour and both are at an angle to one another, so that after assembly, maximum compression of the sealing element 20 occurs exclusively in a quasi-linear sealing area facing the medium, thus achieving a hygienic seal.
  • the assembly is essentially carried out by screwing a nut 13 onto the end of the base body 11 opposite the electrode or sensor head 12.
  • a spring element 14 which advantageously consists of disc springs, was pushed onto the base body 11 together with a corresponding structure that includes a limiting element 15. By screwing on and tightening the nut 13, the spring element 14 experiences a defined preload.
  • the limiting element 15, which is arranged coaxially to the common longitudinal axis of the spring element 14 and the measuring electrode 10 or temperature sensor 10, limits the compression of the spring element 14.
  • the pre-tension of the spring element 14 generates a restoring force which guarantees the required surface pressure and the limiting element 15 can be used to adjust the spring force of the spring element 14 and still transmit higher forces during retraction without exceeding the permissible tensions of the spring element 14.
  • the first embodiment of the invention shown in Figs. 2 and 3 is characterized in that the sleeve 4 at least partially also has a conical inner contour and the sealing element 20 also has a conical outer contour.
  • the sealing element 20 can thus be made comparatively thin and with a uniform thickness.
  • the outer contour of the sealing element 20 and the inner contour of the sleeve 4 are also at an angle to one another, so that it is ensured that maximum compression of the sealing element 20 takes place exclusively in the quasi-linear sealing area facing the medium.
  • the more or less coaxially arranged second conical inner and outer contour results in a stop during assembly which limits the screw-in depth of the measuring electrode 10 or the electrode head 12 or the temperature sensor 10 or the sensor head 12.
  • Figures 4 and 5 are analogous to Figures 2 and 3 and show a second embodiment of the invention.
  • This is characterized in that the through hole 4a of the sleeve 4 is cylindrical and the sealing element 20 has a cylindrical outer contour.
  • the sealing element 20 is thicker than in the area of the electrode head 12.
  • An axial stop is realized via a shoulder in the through hole 4a of the sleeve 4, on which the sealing element 20 rests with its end face opposite the medium.
  • this embodiment also contributes to the fact that maximum compression of the sealing element 20 is achieved exclusively in the quasi-linear sealing area facing the medium.
  • the coating of the measuring tube 2 can take place while the sealing element 20 is already installed. This makes it possible to achieve a continuous coating up to the electrode or sensor head 12.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne un débitmètre magnéto-inductif (1) pour lequel les électrodes de mesure (10) comprennent au moins un corps de base (11) et une tête d'électrode (12), laquelle est en contact avec le milieu et présente un contour extérieur conique orienté en direction du milieu. Selon l'invention, afin d'assurer une étanchéité hygiénique fiable des électrodes de mesure (10), la tête d'électrode (12) de chaque électrode de mesure (10) est disposée dans une ouverture (3) dans la paroi du tube de mesure (2) et un élément d'étanchéité (20) présentant un contour intérieur conique se situe entre la tête d'électrode (12) et la paroi du tube de mesure (2), le contour extérieur de la tête d'électrode (12) et le contour intérieur de l'élément d'étanchéité (20) formant un angle l'un par rapport à l'autre, de telle sorte qu'une compression maximale de l'élément d'étanchéité (20) s'effectue exclusivement dans une zone d'étanchéité quasi linéaire faisant face au milieu. En outre l'invention concerne un ensemble de mesure de température ainsi qu'un débitmètre comportant un ensemble de mesure de température.
EP24712171.8A 2023-03-10 2024-03-08 Débitmètre magnéto-inductif, ensemble de mesure de température et débitmètre doté d'un tel ensemble de mesure de température Pending EP4652432A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023106043 2023-03-10
PCT/EP2024/056233 WO2024188882A2 (fr) 2023-03-10 2024-03-08 Débitmètre magnéto-inductif, ensemble de mesure de température et débitmètre doté d'un tel ensemble de mesure de température

Publications (1)

Publication Number Publication Date
EP4652432A2 true EP4652432A2 (fr) 2025-11-26

Family

ID=90366054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24712171.8A Pending EP4652432A2 (fr) 2023-03-10 2024-03-08 Débitmètre magnéto-inductif, ensemble de mesure de température et débitmètre doté d'un tel ensemble de mesure de température

Country Status (4)

Country Link
EP (1) EP4652432A2 (fr)
CN (1) CN120615160A (fr)
DE (2) DE102024106724A1 (fr)
WO (1) WO2024188882A2 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB953173A (en) * 1959-07-16 1964-03-25 George Kent Stroud Ltd Improvements in or relating to electrode assemblies
JPH04264215A (ja) * 1991-02-19 1992-09-21 Hitachi Ltd 電磁流量計
JP2854720B2 (ja) * 1991-04-18 1999-02-03 株式会社東芝 電磁流量計
DE102007004827B4 (de) 2007-01-31 2012-04-12 Ifm Electronic Gmbh Kompaktes magnetisch induktives Durchflussmessgerät
DE102007004826B4 (de) 2007-01-31 2009-06-18 Ifm Electronic Gmbh Messvorrichtung für ein magnetisch induktives Durchflussmessgerät und Durchflussmessgerät
DE102010001993B4 (de) 2010-02-16 2019-12-19 Ifm Electronic Gmbh Magnetisch-induktives Durchflussmessgerät
DE102015112018B3 (de) 2015-07-23 2016-07-14 Endress+Hauser Flowtec Ag Magnetisch-induktives Durchflussmessgerät zur Messung der Durchflussgeschwindigkeit oder dem Volumendurchfluss von Medien in einer Rohrleitung und Verfahren zur Herstellung eines solchen Durchflussmessgeräts
CN209197811U (zh) * 2018-11-13 2019-08-02 西安秦油隆昌电子科技有限公司 一种井下外磁式电磁流量计专用承压绝缘密封电极结构
DE102021127943B3 (de) 2021-10-27 2022-10-06 Ifm Electronic Gmbh Magnetisch-induktives Durchflussmessgerät
DE102021127942B4 (de) 2021-10-27 2023-08-03 Ifm Electronic Gmbh Temperatursensor und Durchflussmessgerät

Also Published As

Publication number Publication date
WO2024188882A3 (fr) 2024-11-14
WO2024188882A2 (fr) 2024-09-19
DE102024106724A1 (de) 2024-09-12
DE102024106726A1 (de) 2024-09-12
CN120615160A (zh) 2025-09-09

Similar Documents

Publication Publication Date Title
DE102012221616B4 (de) Magnetisch induktiver Durchflussmesser
EP2092277A1 (fr) Dispositif de mesure du débit volumique ou du débit massique d'un milieu dans un conduit
DE102021127943B3 (de) Magnetisch-induktives Durchflussmessgerät
EP2413107B1 (fr) Débitmètre à induction magnétique
WO2019076699A1 (fr) Agencement constitué par un appareil de mesure et un récipient
DE102007004828B4 (de) Kompaktes, modular aufgebautes magnetisch induktives Durchflussmessgerät und Verfahren zur Herstellung eines solchen Durchflussmessgerätes
EP1764587A2 (fr) Débitmètre à induction magnétique muni d'un disque de mise à la terre
DE202005021832U1 (de) Magnetisch induktiver Durchflussmesser mit galvanischen Messelektroden
EP2115401A1 (fr) Dispositif destiné à mesurer le débit volumique ou massique d'un milieu dans une conduite
DE102021127942B4 (de) Temperatursensor und Durchflussmessgerät
EP4652432A2 (fr) Débitmètre magnéto-inductif, ensemble de mesure de température et débitmètre doté d'un tel ensemble de mesure de température
DE102010056077A1 (de) Magnetisch-induktiver Durchflussmesser mit einer innenwandseitig des Messrohres angeordneten Auskleidung
EP0977018B1 (fr) Arrangement d'électrodes pour débitmètres magnéto-inductives
DE102009031873A1 (de) Magnetisch induktiver Durchflussmesser sowie austauschbarer rohrförmiger Einsatz für einen derartigen Durchflussmesser
EP0892252B1 (fr) Electrodes galvaniques des débimètres électromagnétiques
EP4034845A1 (fr) Débitmètre magnéto-inductif
DE102024111271A1 (de) Magnetisch-induktives Durchflussmessgerät
EP3292381A1 (fr) Tube de mesure et débitmètre magnéto-inductif
WO2025224001A1 (fr) Débitmètre magnéto-inductif
EP1994370B1 (fr) Équilibrage des potentiels entre un fluide et le capteur de mesure d'un débitmètre
DE102024111270A1 (de) Magnetisch-induktives Durchflussmessgerät
EP1193474A1 (fr) Dispositif de mesure d' écoulements pour la détection magnétique-inductive ou capacitive des débits
DE102006008433B4 (de) Magnetisch-induktives Durchflussmessgerät mit einem Messrohr aus Kunststoff
DE102016218659B4 (de) Rückschlagventil
WO2020126239A1 (fr) Sonde de mesure de débit à induction magnétique, structure de mesure et procédé de détermination d'un débit et/ou d'un angle de montage

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250820

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR