EP3292381A1 - Tube de mesure et débitmètre magnéto-inductif - Google Patents

Tube de mesure et débitmètre magnéto-inductif

Info

Publication number
EP3292381A1
EP3292381A1 EP16717962.1A EP16717962A EP3292381A1 EP 3292381 A1 EP3292381 A1 EP 3292381A1 EP 16717962 A EP16717962 A EP 16717962A EP 3292381 A1 EP3292381 A1 EP 3292381A1
Authority
EP
European Patent Office
Prior art keywords
tube
measuring
measuring tube
liner
support
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.)
Withdrawn
Application number
EP16717962.1A
Other languages
German (de)
English (en)
Inventor
Frank Voigt
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.)
Endress and Hauser Flowtec AG
Original Assignee
Endress and Hauser Flowtec AG
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 Endress and Hauser Flowtec AG filed Critical Endress and Hauser Flowtec AG
Publication of EP3292381A1 publication Critical patent/EP3292381A1/fr
Withdrawn legal-status Critical Current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
    • G01F1/588—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 combined constructions of electrodes, coils or magnetic circuits, accessories therefor
    • 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
    • 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

Definitions

  • the present invention relates to a measuring tube according to the preamble of claim 1 and a magnetic-inductive flowmeter.
  • Measuring tubes for magnetic-inductive flowmeters either measuring tubes made of plastic or it are for the vast majority of measuring tubes with a support tube made of metal, especially steel used. In the case of the latter, however, there is the problem that the material of the measuring tube itself is conductive. However, a voltage tap on the
  • the measuring tube must be electrically isolated. For this purpose is
  • Perforated sheet for example, a sheet which has only a segmental perforation.
  • a big issue is the anchoring of the liner in the support tube.
  • An anchoring possibility is described in the aforementioned DE 10 2008 054 961.
  • the support body is fixed by a press fit on the measuring tube, so that the support body is determined only due to the contact pressure, however, without material connection in the support tube.
  • This variant has basically proven to be a viable and cost-effective variant, which can be implemented with low production-technical effort.
  • the contact pressure of the perforated plate can be reduced over a longer period of time and the liner can twist in the measuring tube.
  • a perforated grid for supporting the liner is also disclosed in US Pat. No. 5,773,723 A1, and US 2008/0196510 A1 likewise shows support bodies in the form of a perforated plate or perforated grid in a carrier tube. The function of a support is also described in these embodiments. As can be seen from the figures, however, these support bodies have no anchoring on the
  • Support body This can be fixed by screwing or twisting in the measuring tube.
  • the rotation can be done by two sockets, which rest terminally on the support body.
  • Anchors of the liner are provided.
  • Support body which extends almost completely over the inner wall of the support tube. Due to the open-pore structure of the sintered material, the lining or
  • Penetrate liner material and anchor By sintering is a particularly good connection of the supporting sintered material to the steel support tube.
  • the sintered material is, however, comparatively expensive and also more expensive in the
  • Carrier tube is realized.
  • the present invention solves this problem by a measuring tube with the features of claim 1 and by a magnetic-inductive flowmeter with the features of claim 10.
  • An inventive measuring tube which is suitable for a magneto-inductive
  • Flowmeter comprising a support tube and a liner disposed in the carrier tube.
  • the support tube is made of a metal, preferably of a non-ferromagnetic stainless steel.
  • the liner or the lining is known to be used for electrical insulation between the measuring medium and the metallic support tube.
  • the support tube has on its inner wall on a surface structure, which a
  • a surface structure which prevents the rotation of the liner in the measuring tube may preferably be a groove configuration, but it is also possible to provide a knurling, a flake structure or an irregular structure.
  • the configuration as grooves, preferably with a course parallel to the measuring tube axis, can be realized cost-effectively and prevent twisting of the liner particularly reliably.
  • DE 10 2013 1 1 444 284 A1 discloses an internal thread, this is however not suitable for preventing a rotational movement of the liner. Only in conjunction with an annular stop, which, however, is not part of the support tube, a rotational movement is prevented.
  • the surface structure may in particular consist of grooves. These may preferably have a depth of at least one-tenth of the pipe wall thickness. The grooves are
  • the surface structure may also comprise only one groove. If several sections along the tube axis, an inventive
  • the surface structure of the support tube can advantageously by a forming process
  • Tube wall is not weakened in the surface structure.
  • so-called rotary swaging as a special form of cold massive forming has proven to be a particularly good manufacturing process for pipe elements, in which there is no temperature-related tarnishing or weakening of the support tube
  • the carrier tube has symmetrical circumferential bulges of the tube wall, wherein the inner wall of the carrier tube is wetted substantially with the liner material.
  • a support body preferably a hollow cylindrical support body, arranged, which is embedded in the liner.
  • This support body increases the mechanical strength of the liner, so that it also better abuts the surface structure.
  • the support body is preferably formed from a perforated plate.
  • the aforementioned support body can also be formed by a forming process, preferably by a cold massive forming process, in particular by a rotary swaging process.
  • the advantages achieved thereby are similar to the support tube.
  • the aforementioned method can be used in the case of reinforced support bodies, that is to say supporting bodies which have a cross-sectional constriction in the region of the measuring electrodes.
  • a magnetic-inductive flowmeter has a measuring tube according to the invention, as well as a magnet system and at least two measuring electrodes arranged on or in the measuring tube.
  • a support body preferably the
  • hollow cylindrical support body which is embedded in the liner and which in the region of the measuring electrodes has a reduced cross section, so that a flow conditioning can be achieved.
  • An inventive magnetic-inductive flowmeter is with a
  • measuring tube according to the invention.
  • Fig. 1 simplified model view of a magnetic-inductive flowmeter according to the prior art
  • FIG. 2 perspective view of a first embodiment of an inventive
  • Fig. 3 is a sectional view of the measuring tube with liner of Fig. 2;
  • FIG. 4 is a detail view of the measuring tube of FIG. 2; FIG.
  • FIG. 4a front view of Figure 4;
  • FIG. 5 shows a sectional view of the supporting body arranged in the measuring tube of FIG. 2;
  • FIG. 6 is a perspective view of a second embodiment of an inventive
  • Fig. 7 is a sectional view of the measuring tube with liner of Fig. 2;
  • FIG. 8 is a detail view of the measuring tube of FIG. 2; FIG. and
  • FIG. 9 shows a sectional view of the measuring tube of FIG. 2 arranged supporting body.
  • the structure and the measuring principle of a magnetic-inductive flowmeter are basically known and is shown schematically in an example in FIG.
  • a voltage is induced in a conductor moving in a magnetic field.
  • the flowing measuring medium corresponds to the moving conductor, which flows through a measuring tube at a flow rate v.
  • a magnetic field B of constant intensity is generated by a magnet system, eg by two field coils, on both sides of a measuring tube. Perpendicular to this are located on the tube inner wall of the measuring tube, two measuring electrodes, which tap the voltage generated when flowing through the measuring medium U e .
  • the induced voltage U e behaves proportionally to the
  • Magnetic field B is generated by a pulsed DC current of the current I with alternating polarity. This ensures a stable zero point and makes the measurement insensitive to influences by multiphase substances, inhomogeneity in the liquid or low conductivity. Magnetic-inductive flowmeters having coil arrangements with more than two field coils and other geometrical arrangements are known.
  • FIG. 1 shows an electromagnetic flowmeter 101 for measuring the flow of a flowing fluid 102 through a measuring tube 103, as known from the prior art.
  • the measuring tube 103 is provided with an electrically insulating liner 104 in the area facing the fluid, ie on the inside over the entire length. It is expedient, the measuring tube 103 in an inlet portion 103 a, a measuring section 103 b, on which a Sensor unit is mounted, and to divide an outflow section 103c.
  • a measuring electrode pair 108 for picking up the induced voltage as well as the magnet system which is represented by two cuboids for the sake of simplicity, are shown.
  • the magnet system comprises at least two coils 109, 109 'for generating the magnetic field 110 and optionally also pole shoes for realizing an advantageous spatial distribution and / or field plates.
  • the connection axes of the measuring electrode pair 108 and the field coils 109 each extend perpendicular to one another, wherein the two field coils and the two
  • Measuring electrodes 108 are each positioned on opposite sides of the measuring tube 103.
  • the sensor unit with their respective components such. B, the measuring electrode pair 108 and the magnet system is usually at least partially surrounded by a housing 105.
  • the housing 105 In the housing 105 or in the present case outside the housing 105, is still a
  • Electronic unit 106 is provided which is electrically connected via a connecting cable 107 to the field device 101.
  • the electronics unit is used for signal acquisition and / or evaluation and the supply of the coils, as well as an interface to the environment, eg. B. the measured value output or setting the device.
  • the liner arranged in the measuring tube can, for various reasons, detach and / or move from the inner wall of the measuring tube. Especially if one assumes that the measuring device should guarantee reliable measuring operation over many years, anchoring the liner is of great importance.
  • Perforated sheet metal variants for liner anchoring are known in various types and designs from the prior art. In the case of perforated plates, openings are punched in, whereas in the case of expanded plates, projections are pressed out mechanically. Also, their attachment variants in the measuring tube, e.g. by press fit, over welding flags and by other interlocking
  • FIGS. 2-9 show two alternative variants for fastening a support body for fixing a liner in a measuring tube.
  • FIGS. 2-5 show a first embodiment of a measuring tube 1 according to the invention for a magneto-inductive measuring device with terminal flanges 6.
  • the measuring tube 1 has a Support tube 2 on.
  • the support tube has in each case in the region of the inlet and outlet section of the measuring tube to a pipe section 15 with a uniform tube outer circumference U 1.
  • the support tube 2 has a pipe section or a uniformly circumferentially distributed bulge 3 with a larger pipe outer circumference U2.
  • the measuring electrodes 4 are already integrated in the measuring tube.
  • the measuring tube in particular the carrier tube of the measuring tube, moreover has receivers 5 for a magnet system and possibly also a pole shoe holder.
  • the support tube 2 is a support body 8, preferably in a hollow cylindrical shape, in particular a hollow cylindrical perforated plate, which is surrounded by a liner 7.
  • the support body 8 has in the measuring section a cross-sectional constriction 12 with respect to the inlet and outlet areas 14 of the support body, for better flow conditioning and to reduce the inlet path. In this area are also recesses 13 in the support body 8 for the implementation of the measuring electrodes 4.
  • the area between the cross-sectional constriction 12 of the support body 8 and the tube wall of the measuring tube 1 is also liner material arranged in a free space 9.
  • the support tube 2 has a circumferential step 10.
  • the step of grading there is an increase or decrease, preferably a continuous increase or decrease in the outer circumference of the pipe. This is called also konness.
  • An anti-rotation of the liner is also provided in the support tube.
  • circumferential grooves 11 are provided on the inner wall of the support tube 1, which are introduced into the inner wall. It is an integral arrangement within the measuring tube. The course of the grooves 1 1 is preferably parallel to the longitudinal axis L of the measuring tube 1.
  • Liner material may be used in the manufacture e.g. flow into these grooves and harden. A twisting of the liner within the measuring tube is therefore not possible through the grooves.
  • the grooves are arranged in particular in one or both pipe sections 15 of the inlet and / or the outlet.
  • Fig. 6-9 shows a second embodiment of a measuring tube 21 according to the invention for a magneto-inductive measuring device with a support tube 22 and terminal flanges 26.
  • Das Carrier tube 22 has in each case in the region of the inlet and outlet section of the measuring tube 21 to a pipe section 35 with a uniform pipe outer circumference U3.
  • a pipe section 37 is also arranged a uniform tube outer circumference U3.
  • the measuring tube 21 also has measuring electrodes 24 and receptacles 25 for a magnet system.
  • a support body 28 preferably arranged in a hollow cylindrical shape, which is surrounded by a liner 27, preferably encapsulated or surrounded.
  • the support body 28 is configured as a hollow cylindrical perforated plate.
  • the support body 28 has a uniform cross section in its course.
  • the support tube 22 has no uniform cross section in the course of its longitudinal axis.
  • pipe sections 35 and 37 are arranged, which have a uniform outer circumference.
  • ring segments 23 or annular bulges of the wall of the support tube are arranged, which have a larger outer circumference, than the tube portions 35 and 37 in the aforementioned sections.
  • the ring segments 23 have one or more regions 30, 36 with continuous increase and / or decrease of the outer circumference.
  • grooves 31 are arranged in regions along the inner wall of the support tube, which preferably extend parallel to the longitudinal axis of the measuring tube. These grooves are to be understood as anti-rotation.
  • the grain shape is the surface structure with respect to the remaining areas
  • the grooves 1 1, 31 are formed in the respective carrier tube and at the same time due to the driving of the material, and possibly of compressions, the
  • Bumps 3, 23 formed.
  • the bulges also serve as an axial stop for the liner and thus prevents its linear movement, while the grooves as a kind of
  • the support body 8, 28 can be kneaded round for shaping. Even after processing, the support body has a constant wall thickness.
  • the liner may be formed from the materials known for the purpose, but more preferably from polyfluorinated plastics, most preferably from PFA.
  • the installation length of the measuring tube may preferably be less than 200 mm, in particular less than 150 mm.
  • the respective support body 8, 28 may be connected in different ways with the support tube. However, the attachment by terminal flanging has proved to be particularly practical. Overall, the use of the aforementioned measuring tubes in magnetic-inductive flow measuring devices are characterized by a high measuring sensitivity, low component weight and by a cost-effective and process-reliable production compared with other magnetic-inductive flow measuring devices. In addition, the reusability of the components is ensured in case of incorrect manufacture.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

L'invention concerne un tube de mesure (1, 21) pour un débitmètre magnéto-inductif, qui comprend un tube support (2, 22) et un manchon (7, 27) disposé dans le tube support (2, 22), le tube support (2, 22) présentant, sur sa paroi intérieure, une structure superficielle qui empêche un mouvement de rotation du manchon (7, 27) dans le tube de mesure (1, 21), ainsi qu'un débitmètre magnéto-inductif muni d'un tel tube de mesure.
EP16717962.1A 2015-05-07 2016-04-25 Tube de mesure et débitmètre magnéto-inductif Withdrawn EP3292381A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015107119.3A DE102015107119A1 (de) 2015-05-07 2015-05-07 Messrohr und Magnetisch-induktives Durchflussmessgerät
PCT/EP2016/059141 WO2016177594A1 (fr) 2015-05-07 2016-04-25 Tube de mesure et débitmètre magnéto-inductif

Publications (1)

Publication Number Publication Date
EP3292381A1 true EP3292381A1 (fr) 2018-03-14

Family

ID=55806364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16717962.1A Withdrawn EP3292381A1 (fr) 2015-05-07 2016-04-25 Tube de mesure et débitmètre magnéto-inductif

Country Status (5)

Country Link
US (1) US10620024B2 (fr)
EP (1) EP3292381A1 (fr)
CN (1) CN107636422A (fr)
DE (1) DE102015107119A1 (fr)
WO (1) WO2016177594A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015107119A1 (de) 2015-05-07 2016-11-10 Endress + Hauser Flowtec Ag Messrohr und Magnetisch-induktives Durchflussmessgerät
DE102016125809A1 (de) * 2016-12-28 2018-06-28 Endress+Hauser Flowtec Ag Messanordnung zur Analyse von Eigenschaften eines strömenden Mediums mittels Mikrowellen
US12031852B2 (en) 2021-08-19 2024-07-09 Micro Motion, Inc. Magnetic flowmeter with flow tube liner having adhesion feature in an exterior surface

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090178489A1 (en) * 2008-01-15 2009-07-16 Kabushiki Kaisha Toshiba Electromagnetic flow meter

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465585A (en) 1966-05-31 1969-09-09 Tokyo Shibaura Electric Co Flow detection signal generator for electromagnetic flowmeters
GB2047409B (en) * 1979-03-21 1983-04-20 Davies P M Electrodes for electromagnetic flowmeters
JPS5788321A (en) * 1980-11-22 1982-06-02 Yokogawa Hokushin Electric Corp Electromagnetic flowmeter transmitter and its production
DE3201562A1 (de) * 1982-01-20 1983-08-18 Turbo-Werk Messtechnik GmbH, 5000 Köln "induktiver durchflussmesser"
JPS6122216A (ja) 1985-06-19 1986-01-30 Yokogawa Hokushin Electric Corp 電磁流量計のパイプの製造方法
JPS6235224A (ja) * 1985-08-09 1987-02-16 Yokogawa Electric Corp 電磁流量計
US5280727A (en) 1987-09-11 1994-01-25 Endress+Hauser Flowtec Ag Electromagnetic flow measuring tube and method of making same
US5773723A (en) 1995-09-29 1998-06-30 Lewis; Peter B. Flow tube liner
DE59914903D1 (de) 1999-03-26 2008-12-24 Flowtec Ag Verfahren zur Herstellung eines magnetisch-induktiven Durchflussaufnehmers
JP4000504B2 (ja) * 2000-08-04 2007-10-31 横河電機株式会社 電磁流量計
JP2004233203A (ja) * 2003-01-30 2004-08-19 Yamatake Corp 電磁流量計用測定管
CN2669143Y (zh) * 2003-11-27 2005-01-05 吴天侠 具有导管与衬里可密封结合的电磁流量计的测量管
DE10358268A1 (de) * 2003-12-11 2005-07-21 Endress + Hauser Process Solutions Ag Magnetisch-induktiver Durchflußaufnehmer und Verfahren zu dessen Herstellung
EP1809990B1 (fr) 2004-11-10 2016-05-18 Siemens Aktiengesellschaft Piece tubulaire pour debitmetre inductif magnetique
DE102006018415B4 (de) 2006-04-20 2008-01-10 Siemens Ag Messrohr für einen magnetisch induktiven Durchflussmesser
DE102008054961A1 (de) 2008-12-19 2010-07-01 Endress + Hauser Flowtec Ag Durchfluss-Messgerät und Verfahren zur Herstellung eines Messrohrs eines Durchfluss-Messgerätes
JP2010271077A (ja) * 2009-05-19 2010-12-02 Toshiba Corp 電磁流量計
DE102011104799B4 (de) * 2011-06-06 2013-04-25 Krohne Messtechnik Gmbh Magnetisch-induktives Durchflussmessgerät und Verfahren zu dessen Betreiben
DE102011119982A1 (de) * 2011-12-02 2013-06-06 Krohne Ag Magnetisch-induktives Durchflussmessgerät
DE102012015038B3 (de) * 2012-07-31 2013-11-21 Ifm Electronic Gmbh Magentisch-induktives Durchflussmessgerät
DE102012017904A1 (de) * 2012-08-21 2014-03-20 Krohne Ag Magnetisch-induktives Durchflussmessgerät und Verfahren zu seiner Herstellung
DE102012221616B4 (de) * 2012-11-27 2015-03-12 Siemens Aktiengesellschaft Magnetisch induktiver Durchflussmesser
US9068869B2 (en) * 2013-03-14 2015-06-30 Rosemount Inc. Magnetic flowmeter with bonded PTFE electrodes
JP6157985B2 (ja) * 2013-08-12 2017-07-05 株式会社東芝 電磁流量計
DE102013114284A1 (de) 2013-12-18 2015-06-18 Hochschule Niederrhein Faseroptische Messvorrichtung
DE102013114428A1 (de) 2013-12-19 2015-06-25 Endress + Hauser Flowtec Ag Messrohr für ein magnetisch-induktives Durchflussmessgerät und Magnetisch-induktives Durchflussmessgerät
US9464926B2 (en) * 2014-09-23 2016-10-11 Micro Motion, Inc. Magnetic flowmeter flowtube assembly with spring-energized seal rings
DE102015107119A1 (de) 2015-05-07 2016-11-10 Endress + Hauser Flowtec Ag Messrohr und Magnetisch-induktives Durchflussmessgerät

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090178489A1 (en) * 2008-01-15 2009-07-16 Kabushiki Kaisha Toshiba Electromagnetic flow meter

Also Published As

Publication number Publication date
US20180156649A1 (en) 2018-06-07
WO2016177594A1 (fr) 2016-11-10
CN107636422A (zh) 2018-01-26
DE102015107119A1 (de) 2016-11-10
US10620024B2 (en) 2020-04-14

Similar Documents

Publication Publication Date Title
EP3084361B1 (fr) Tube de mesure pour débitmètre à induction magnétique et débitmètre à induction magnétique
EP0764831B1 (fr) Procédé de fabrication d'un tube de mesure pour un capteur électromagnétique de débit
EP2359100B1 (fr) Débitmètre et procédé de fabrication d'un tube de mesure d'un débitmètre
EP2583067A1 (fr) Procédé de fabrication d'un débitmètre magnéto-inductif
EP3084360B1 (fr) Tuyau de mesure pour un débitmètre inductif-magnétique
EP1764587A2 (fr) Débitmètre à induction magnétique muni d'un disque de mise à la terre
WO2016177594A1 (fr) Tube de mesure et débitmètre magnéto-inductif
DE202005021832U1 (de) Magnetisch induktiver Durchflussmesser mit galvanischen Messelektroden
DE102006008451B4 (de) Magnetisch-induktiver Durchflussmesser mit einem Messrohr aus Metall
DE102006018415B4 (de) Messrohr für einen magnetisch induktiven Durchflussmesser
DE102005003332B4 (de) Magnetisch-induktives Durchflussmessgerät
EP3325924B1 (fr) Appareil de mesure de débit magnéto-inductif pour la mesure de la vitesse d'écoulement ou du débit volumétrique de substances dans une conduite
DE102004057695B4 (de) Magnetisch induktiver Durchflussmesser mit einem Messrohr aus Kunststoff
EP3084366A1 (fr) Procédé servant à fixer un tube métallique au niveau d'un corps métallique
EP1692465B1 (fr) Capteur de debit magneto-inductif et procede de fabrication
DE102006036747B4 (de) Verfahren zur Herstellung einer Verbindung zwischen einem Messrohr und mindestens einem Flansch und Coriolismassendurchflussmesser
DE102006054008B4 (de) Magnetisch-induktiver Durchflussmesser mit einem mit Losflanschen ausgestattetem Messrohr
EP4078098B1 (fr) Débitmètre à induction magnétique
DE102006008433B4 (de) Magnetisch-induktives Durchflussmessgerät mit einem Messrohr aus Kunststoff
DE102004053065A1 (de) Magnetisch induktiver Durchflussmesser
EP1193474A1 (fr) Dispositif de mesure d' écoulements pour la détection magnétique-inductive ou capacitive des débits
WO2021213766A1 (fr) Tube de mesure, procédé de production d'un tube de mesure et débitmètre magnéto-inductif
EP4264195A1 (fr) Dispositif de mesure et procédé de détermination d'une abrasion
WO2024188882A2 (fr) Débitmètre magnéto-inductif, ensemble de mesure de température et débitmètre doté d'un tel ensemble de mesure de température
DE202005021186U1 (de) Magnetisch-induktiver Durchflussmesser mit einer Erdungsscheibe

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 20171010

AK Designated contracting states

Kind code of ref document: A1

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 MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20191129

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20200319