WO2017108276A1 - Procédé permettant de faire fonctionner un débitmètre à induction magnétique et débitmètre à induction magnétique - Google Patents

Procédé permettant de faire fonctionner un débitmètre à induction magnétique et débitmètre à induction magnétique Download PDF

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Publication number
WO2017108276A1
WO2017108276A1 PCT/EP2016/077803 EP2016077803W WO2017108276A1 WO 2017108276 A1 WO2017108276 A1 WO 2017108276A1 EP 2016077803 W EP2016077803 W EP 2016077803W WO 2017108276 A1 WO2017108276 A1 WO 2017108276A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
measuring tube
operating mode
flowmeter
magnetic
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.)
Ceased
Application number
PCT/EP2016/077803
Other languages
German (de)
English (en)
Inventor
Markus RÜFENACHT
Heinz Rufer
Andre Spahlinger
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 WO2017108276A1 publication Critical patent/WO2017108276A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • G01F1/60—Circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields

Definitions

  • the present invention relates to a method according to the preamble of claim 1 and a magnetic-inductive flowmeter.
  • Magnetic-inductive flowmeters serve to measure the flow of a measuring medium in a pipeline. Here are some magnetic-inductive flowmeters.
  • Measuring medium is filled.
  • the diameter of the fully filled pipe can be included in the calculation of the volume flow.
  • an electrode can sometimes be used in models from the prior art. This may for example be a reference electrode, e.g. a
  • the invention solves the present task by a method having the features of claim 1 and by a magnetic-inductive flowmeter with the features of claim 7.
  • the electromagnetic flowmeter includes a measuring tube, a
  • operating mode A a checking of the filling state of the measuring tube and no flow measurement and in particular no energy supply of the Magnetic system for flow measurement.
  • the operating mode A may be a stand-by mode. The real one
  • Power supply unit is used, which only a small
  • Energy reservoir e.g. a battery powered flowmeter.
  • operating mode B advantageously two operating modes B1 and B2 can be executed, wherein in operating mode B1 a continuous power supply of the magnet system takes place and in operating mode B2 a time-clocked power supply of the magnet system takes place. If there is a lack of energy supply, the meter can switch to the time-clocked operating mode B2. If sufficient energy is available, a continuous flow measurement can be carried out, which is interrupted again if the degree of filling is insufficient.
  • the operating modes A and B may be intermittent
  • a magnetic-inductive flowmeter comprises a magnet system, at least two measuring electrodes, a system for monitoring the filling state of the measuring tube and a measuring and evaluation device, characterized in that the measuring and evaluation device is set up to carry out the method according to the invention. It is advantageous if the magnetic-inductive flowmeter has at least one first electrode with a medium-contacting face of electrically conductive material for checking the filling state of the
  • This first electrode is the reference electrode.
  • the method can also advantageously an installation mode
  • the flowmeter is provided at the place of use during commissioning and in which a measurement of the filling state of the measuring tube takes place without power supply to the magnet system, wherein the
  • Installation mode after a first detection of a complete filling of the measuring tube of the flowmeter for the first time in the operating mode B initiated.
  • the flowmeter may also advantageously have a second electrode and / or a ring arranged on the measuring tube, ie at the connection regions of the flanges of the measuring tube, which and / or which is provided for detecting a reference potential and which and / or which formed of conductive material is.
  • the flowmeter may be via an external power supply system or an external power supply unit and / or via an internal
  • Flow meter have an integrated power supply system, which is designed as a battery and / or energy harvester.
  • the invention will be described in detail with reference to a concrete embodiment. It shows:
  • Fig. 1 is a schematic representation of an embodiment of a
  • Magnetic inductive flowmeters are widely used in process and automation technology for fluids with an electrical conductivity of about 5 pS / cm.
  • Corresponding flow meters are, for example, by the applicant in various embodiments for various
  • PROMAG Fields of application sold under the name PROMAG.
  • the measuring principle of a magnetic-inductive flowmeter 1, as shown in Fig. 1, is basically known. According to Faraday's
  • Induction law induces a voltage in a conductor moving in a magnetic field.
  • the flowing medium or the measuring medium corresponds to the moving conductor.
  • a magnetic field can be generated by two field coils 5, which are arranged diametrically on the measuring tube 2. Perpendicular to this are located on the pipe inner wall of the
  • Measuring tube 2 two measuring electrodes 3 which tap the voltage generated when flowing through the medium.
  • the induced voltage is proportional to the flow velocity and thus to the volume flow. That by the
  • Field coils 5 constructed magnetic field is generated by a clocked DC alternating polarity. This ensures a stable zero point and makes the measurement less susceptible to influences by multiphase substances,
  • FIG. 1 shows a magnetic-inductive flowmeter 1 with a measuring tube 2 and an electrically insulating plastic lining arranged in the measuring tube 2 6, the so-called liner.
  • the measuring tube 2 has two flanges 3, which enable a connection to a process connection.
  • the outer wall of the measuring tube 2 has a magnet system above and below the measuring tube axis, which are shown in FIG. 1 in the form of two field coils 5.
  • This magnet system generates during operation of the magnetic inductive
  • Flowmeter out of a magnetic field When installed horizontally at the same height as the measuring tube axis, two measuring electrodes 4 are arranged, which are diametrically opposed and pick up a voltage generated in the measuring medium during operation. If the volume flow is to be measured, it is particularly important that the filling of the measuring tube 2 is as complete as possible. Therefore, at the measuring tube axis with horizontal installation at the highest point of the
  • an electrode 8 a Inside diameter of the measuring tube 2, an electrode 8 a
  • Level monitoring system may be arranged, which is formed in the present case as Messstoffüberwachungselektrode, short ESC electrode. This extends through the liner 6, and the metallic measuring tube wall of the measuring tube 2 and is attached to the side facing away from the medium of the outer wall of the measuring tube 2.
  • a temperature sensor in the form of a
  • thermometer be arranged.
  • a 9 can also be arranged on the end face of one of the two flanges and / or a second electrode.
  • the second electrode and / or the ring are made of an electrically conductive material for detecting a reference potential.
  • the EPD electrode 8 and the optional ring 10 are connected by means of signal lines 10 to a measuring and evaluation unit 7. These signal lines 10 transmit a signal relating to the information as to whether or not the measuring tube 2 is filled with a conductive measuring medium to the measuring and evaluation unit 7. This evaluation unit is via a signal and / or
  • the measuring and evaluation device 7 allows the control of the operation of the Magnetic-inductive flow meter 1 and in particular the
  • the power supply system may be, for example, a battery.
  • the operation of the magnetic-inductive flow measuring device 1 by the measuring and evaluation device 7 comprises at least two operating modes.
  • a continuous or discontinuous flow measurement takes place. It is a so-called measurement mode.
  • a continuous or clocked checking of the filling state of the measuring tube can also take place.
  • a continuous or discontinuous check of the filling state of the measuring tube takes place without flow measurement.
  • This operating mode is to be understood as a stand-by mode of the flow measuring device, as long as the measuring tube is partially filled.
  • the flowmeter is set in the measuring mode or operating mode A.
  • Flow meters in which the power supply system is designed as a battery and / or energy harvester, made particularly useful.
  • the measuring and evaluation device 7 may also have an optional display unit, in which also advantageously only in the measuring mode, an output of measured data takes place, however, in stand-by mode no display takes place.
  • the electrode 8 for detecting the filling state may be, for example, as a Capacitive proximity switch or as an electrode for detecting an electrical property, such as a minimum conductivity, be formed.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un procédé permettant de faire fonctionner un débitmètre à induction magnétique (1), comprenant un tube de mesure (2), un système magnétique (5) et au moins deux électrodes de mesure (4) servant à prélever un signal de mesure, ledit procédé présentant deux modes de fonctionnement A et B. Dans le mode de fonctionnement A, l'état de remplissage du tube de mesure (2) est vérifié et aucune mesure de débit n'est effectuée. Dans le mode de fonctionnement B, le système magnétique (5) est alimenté en énergie pour mesurer le débit en fonction de l'état de remplissage du tube de mesure (2). Le débitmètre à induction magnétique (1) fonctionne soit dans le mode A, soit dans le mode B. L'invention concerne également un débitmètre à induction magnétique.
PCT/EP2016/077803 2015-12-22 2016-11-16 Procédé permettant de faire fonctionner un débitmètre à induction magnétique et débitmètre à induction magnétique Ceased WO2017108276A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015122546.8A DE102015122546A1 (de) 2015-12-22 2015-12-22 Verfahren zum Betrieb eines magnetisch-induktiven Durchflussmessgeräts und magnetisch-induktives Durchflussmessgerät
DE102015122546.8 2015-12-22

Publications (1)

Publication Number Publication Date
WO2017108276A1 true WO2017108276A1 (fr) 2017-06-29

Family

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PCT/EP2016/077803 Ceased WO2017108276A1 (fr) 2015-12-22 2016-11-16 Procédé permettant de faire fonctionner un débitmètre à induction magnétique et débitmètre à induction magnétique

Country Status (2)

Country Link
DE (1) DE102015122546A1 (fr)
WO (1) WO2017108276A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11815379B2 (en) 2018-10-29 2023-11-14 Abb Schweiz Ag Electromagnetic flowmeter assembly with a rotatable magnetic ring on a surface of the conduit for adjusting varying magnetic field

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016124796A1 (de) * 2016-12-19 2018-06-21 Endress+Hauser Conducta Gmbh+Co. Kg Sensorkopfmodul zur kontinuierlichen automatisierten Datenerfassung
RU198521U1 (ru) * 2020-02-11 2020-07-14 Алексей Анатольевич Воронцов Электромагнитный расходомер

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336615A1 (fr) * 1988-03-29 1989-10-11 Aichi Tokei Denki Co., Ltd. Débitmètre électromagnétique capable pour la mesure simultanée du débit et de la conductivité d'un fluide
GB2324606A (en) * 1997-04-25 1998-10-28 Kent Meters Ltd Electromagnetic flowmeters
GB2333161A (en) * 1997-12-24 1999-07-14 Abb Kent Taylor Ltd Electrode integrity checking
WO2001050094A2 (fr) * 2000-01-06 2001-07-12 Abb Automation Limited Structure de debitmetre
US20050115334A1 (en) * 2003-11-27 2005-06-02 Helmut Brockhaus Method for operating a magnetoinductive flowmeter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008051034A1 (de) * 2008-10-13 2010-04-15 Endress + Hauser Flowtec Ag Verfahren zum energiesparenden Betreiben eines magnetisch- induktiven Durchflussmessgerätes
DE102012015038B3 (de) * 2012-07-31 2013-11-21 Ifm Electronic Gmbh Magentisch-induktives Durchflussmessgerät
DE102012109308A1 (de) * 2012-10-01 2014-04-03 Endress + Hauser Flowtec Ag Füllstandsüberwachungssystem und Durchflussmessgerät

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336615A1 (fr) * 1988-03-29 1989-10-11 Aichi Tokei Denki Co., Ltd. Débitmètre électromagnétique capable pour la mesure simultanée du débit et de la conductivité d'un fluide
GB2324606A (en) * 1997-04-25 1998-10-28 Kent Meters Ltd Electromagnetic flowmeters
GB2333161A (en) * 1997-12-24 1999-07-14 Abb Kent Taylor Ltd Electrode integrity checking
WO2001050094A2 (fr) * 2000-01-06 2001-07-12 Abb Automation Limited Structure de debitmetre
US20050115334A1 (en) * 2003-11-27 2005-06-02 Helmut Brockhaus Method for operating a magnetoinductive flowmeter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11815379B2 (en) 2018-10-29 2023-11-14 Abb Schweiz Ag Electromagnetic flowmeter assembly with a rotatable magnetic ring on a surface of the conduit for adjusting varying magnetic field

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Publication number Publication date
DE102015122546A1 (de) 2017-06-22

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