EP3987253A1 - Procédé et dispositif de détermination d'un paramètre d'écoulement au moyen d'un débitmètre à effet coriolis - Google Patents

Procédé et dispositif de détermination d'un paramètre d'écoulement au moyen d'un débitmètre à effet coriolis

Info

Publication number
EP3987253A1
EP3987253A1 EP20760755.7A EP20760755A EP3987253A1 EP 3987253 A1 EP3987253 A1 EP 3987253A1 EP 20760755 A EP20760755 A EP 20760755A EP 3987253 A1 EP3987253 A1 EP 3987253A1
Authority
EP
European Patent Office
Prior art keywords
flow
measuring
medium
viscosity
coriolis
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Withdrawn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
EP20760755.7A
Other languages
German (de)
English (en)
Inventor
Thomas Chatzikonstantinou
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.)
Heinrichs Messtechnik GmbH
Original Assignee
Heinrichs Messtechnik 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 Heinrichs Messtechnik GmbH filed Critical Heinrichs Messtechnik GmbH
Publication of EP3987253A1 publication Critical patent/EP3987253A1/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Withdrawn legal-status Critical Current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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
    • G01F1/8436—Coriolis or gyroscopic mass flowmeters constructional details signal processing
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
    • G01F1/8468—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
    • G01F1/8413—Coriolis or gyroscopic mass flowmeters constructional details means for influencing the flowmeter's motional or vibrational behaviour, e.g., conduit support or fixing means, or conduit attachments
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
    • G01F1/8422—Coriolis or gyroscopic mass flowmeters constructional details exciters
    • 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
    • G01F15/02—Compensating or correcting for variations in pressure, density or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G01N11/16—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • G01N2009/006—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis vibrating tube, tuning fork
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N2011/006—Determining flow properties indirectly by measuring other parameters of the system
    • G01N2011/0073—Determining flow properties indirectly by measuring other parameters of the system acoustic properties

Definitions

  • the invention relates to a method and a device for determining a
  • Coriolis flowmeters have at least one measuring tube in a transducer through which the fluid, the mass flow rate and / or density of which is to be determined, flows.
  • the at least one measuring tube is made to vibrate by means of a vibration exciter, while at the same time the vibrations of the measuring tube are measured by means of vibration sensors at separate measuring points. If no fluid flows through the measuring tube during the measurement, the measuring tube vibrates with the same phase at both measuring points. With fluid flowing through, however, it affects both
  • Measuring points due to occurring Coriolis forces to phase shifts that are a direct measure of the mass throughput, i.e. H. for the mass of the fluid flowing through the measuring tube in question per unit of time.
  • H. the mass of the fluid flowing through the measuring tube in question per unit of time.
  • the natural frequency of the measuring tube at the measuring points is directly dependent on the density of the fluid flowing through, so that its density can also be determined.
  • Coriolis flowmeters are used in many areas of technology, for example in pipeline billing measurements, in loading processes, for example when loading tankers with petroleum or gas, or in dosing processes.
  • phase shift or frequency depends not only on the type of Coriolis flow meter, but also on the temperature, pressure and viscosity of the medium to be measured.
  • the temperature of the fluid is attached at a suitable point on the Coriolis mass flow meter
  • Temperature sensor is continuously measured and density and / or mass flow are set in relation to a reference state, here a reference temperature, by means of mostly linear approximation formulas.
  • a reference state here a reference pressure
  • the procedure is used to correct pressure-related measurement errors of Coriolis flowmeters.
  • Coriolis mass flow meters usually do not have a pressure sensor, which is why, unlike the temperature, the pressure is not measured continuously but entered by the user, usually manually, on the electronic evaluation unit.
  • Formulas for density and flow correction e.g. by means of linear temperature and pressure compensation are known in the prior art.
  • the evaluation unit of the Coriolis mass flow meter does not include or to process. This should be noted even though considerable measurement errors occur, especially with low Reynolds numbers, which can amount to several percentage points, especially if - as is regularly the case - water is used as the calibration medium. This effect is particularly pronounced when using a device calibrated with water when used for a fluid with high to very high viscosity. The same applies to very large Coriolis flowmeters, such as those used at large loading terminals for hydrocarbons or bitumen. But also with small ones
  • Viscosities and at the same time very small mass flow rates of the fluid e.g. small Coriolis flowmeters that are used in the kilogram per hour range, measurement errors based on the influence of viscosity should not be neglected.
  • WO 2015/086224 A1 discloses a density measuring device, in particular a Coriolis mass flow / density measuring device, in which it is proposed not to use the resonance frequency of the measuring transducer measuring tube for measuring the density or the mass flow rate of the fluid flowing through a transducer, but a different frequency, which should result in a preferred phase shift.
  • the optimal measurement frequency leads to independence from the influence of viscosity on the measurement result.
  • the optimal phase shift angle can be determined experimentally and / or with simulation calculations.
  • DE 100 20 606 A1 discloses devices and methods for Coriolis flow measurement which allow the viscosity to be determined and, at the same time, the density and mass flow rate of the fluid flowing through to be measured.
  • No. 5,027,662 A discloses a Coriolis flow measuring device in which, in certain embodiments, a damping dependent on the viscosity is taken into account in order to determine the mass flow.
  • Flier Results is the attenuation from the
  • Measured values are determined without the viscosity values being determined themselves.
  • Influence measurement accuracy disregarded, e.g. Locally different diameters of the measuring tubes over the course of the measuring tube, local wrinkles in the wall of the measuring tubes caused by measuring tube bending processes, locally different surface quality of the inside of the measuring tubes, but also other effects, all of which, together with the shape of the measuring tubes, the velocity profile of the flow along of the measuring tubes. A constant, undisturbed velocity profile of the flow along the measuring tubes cannot therefore be assumed.
  • the measuring principle of Coriolis flowmeters due to the unsteady, i.e. dynamic fluid structure leads to interactions between the fluid to be measured, the structure of the Coriolis flow meter and its surroundings. For such unsteady physical phenomena there is one
  • EP 1 281 938 B1 discloses taking into account the viscosity of the fluid in order to correct an intermediate value determined for the mass flow rate of a fluid. For this purpose, the viscosity is measured and from that which is representative for the viscosity
  • Viscosity value is determined during operation or is determined in advance as a specified reference viscosity and entered manually from a remote control room or on site, knowing the medium to be measured.
  • a first intermediate value for the mass flow is offset against a correction value.
  • the correction value in turn is calculated from the specified or measured viscosity value and a second intermediate value, the second intermediate value corresponding to a damping of the vibrations of the measuring tube that is dependent on an apparent viscosity of the medium carried in the measuring tube.
  • the deviation of the apparent viscosity determined via the second intermediate value from the specified or measured viscosity is taken into account.
  • the correction value and the second intermediate value can be mapped with a clear relationship in a table memory of a measuring device electronics.
  • Table memory has a set of digital correction values, e.g. in the
  • Calibration of the Coriolis flow meter has been determined.
  • a measured second intermediate value is compared with the default values stored in the table memory for the second intermediate value and the closest of these is used to determine the correction value.
  • Mass flow is taken over and represented by means of a proportionality constant, the so-called device parameter.
  • This device parameter sometimes too
  • Device constant called is usually also on the nameplate of each produced Coriolis flow meter. Device constants of devices of the same size and type do not differ significantly from one another.
  • measurement errors can result that easily exceed the accuracy of the device based on the calibration medium water by a factor of ten or more .
  • the following is an exemplary table which, depending on the viscosity of the medium and the uncorrected mass flow rate, shows the measurement errors in percent that would result if the viscosity of the measurement medium, which deviates from the calibration medium water, is neglected for the measurement result.
  • the first column shows the uncorrected mass flow values and the first line shows the viscosity values of the measuring medium.
  • Measuring device type so that with other measuring device types (e.g. with different measuring tube shapes), completely different errors will occur in terms of numbers.
  • Viscosity compensation with sufficient resolution is problematic in practice, since this would be associated with a correspondingly high number of measurements and / or simulations. Thirty-six measurements and / or simulations are required for the very rough error table shown above, which is only valid for a specific Coriolis flowmeter type, which is very time-consuming and costly.
  • the invention is based on the technical problem, a method and a
  • the new method and the new device should be practical, economical and as precise as possible.
  • the medium having a medium viscosity accordingly flows through at least one measuring tube piece, which is mechanically controlled by means of an excitation signal Vibrations is excited.
  • At least one measurement signal that is dependent on the flow parameter, in particular a phase shift, is determined in the vibration behavior of the respective measurement pipe section, with the at least one
  • Measurement signal of the flow parameters is determined taking into account the dependence of the flow parameter on the medium viscosity, with for
  • Determination of the flow parameter a data field which is determined by means of an interpolation method and shows the dependency of the flow parameter on the medium viscosity is used.
  • the method according to the invention can be implemented in such a way that the interpolation method for determining a data field is applied to a basic data set determined experimentally and / or by simulation.
  • Basic data set can be stored in the form of a table, for example, in
  • Coriolis flowmeter itself or in an external memory.
  • Basic data set can e.g. can be generated experimentally through tests with media of different viscosity or through simulation calculations or a combination of both methods.
  • the basic data set can consist of a small number of data, since a large number of measurements but also of simulations is generally not sensible for economic or practical reasons.
  • a basic data set that is as small as possible is desirable, since a separate data field or characteristic field should be determined for each type of measuring device.
  • the basic data set can be, for example, a table in which, for certain viscosity values, flow parameter values that have not yet been measured taking into account the influence of viscosity, e.g. Mass flow values, the respective error is specified that arises compared to a device type calibrated with water or another calibration medium.
  • a table in which, for certain viscosity values, flow parameter values that have not yet been measured taking into account the influence of viscosity, e.g. Mass flow values, the respective error is specified that arises compared to a device type calibrated with water or another calibration medium.
  • Such an exemplary basic data set is shown in the introduction to the description. Of course he can
  • Basic data set also have a different structure with other data, as long as this results in the dependency of the mass flow rate or the other
  • the basic data set can also show the errors in absolute values instead of Specify percentages.
  • values representing errors it is also possible to specify already corrected mass flow values.
  • the density of the medium flowing through the Coriolis flow measuring device can also be measured as a flow parameter, for example.
  • Flow parameters such as the density apply.
  • density measurements e.g. a suitable data field can also be generated and used by means of the interpolation, with which viscosity-related error of the density measurement relative to a
  • a data field of higher data density that is sufficiently fine for the required accuracy is generated from the basic data set with a relatively low data density or number of data.
  • the data field can be in the form of a table or a characteristic field. So much for the following presentation of the
  • the interpolation method does not have to be part of the measuring method according to the invention but can be carried out in advance, e.g. during calibration or after
  • the resulting data field can be stored as a table or as a map for all Coriolis flowmeters of the calibrated measuring device type, e.g. in the measuring device electronics unit of each Coriolis flowmeter or in an external unit, and for the actual measurement be used.
  • the measuring method is characterized by the fact that it uses the data field used with interpolation for the actual measurement. However, it is also possible for the interpolation method to be used during the measurement for an evaluation during or after the determination of the at least one measurement signal. In this case it is external or in the Coriolis flowmeter itself
  • the medium viscosity can, for example, be entered manually on the Coriolis flowmeter or made available for measurement in some other way, e.g. by means of a measurement on the medium.
  • the medium viscosity can also depend on pressure or temperature, which is also true for the process according to the invention
  • the inventive method can also be carried out so that the
  • the finished map can already be used in the specific Coriolis flow meter, e.g. be stored in a measuring device electronics unit or in an external unit.
  • the interpolation method used can also be a combination of individual interpolation methods, e.g. linear interpolation or interpolation with higher degree polynomials. Any suitable interpolation method can be used.
  • An interpolation method in the context of the method according to the invention is to be understood as any method that is capable of one
  • the device type of which has been calibrated with a calibration medium that differs from the measuring medium, in particular water a viscosity-related measurement deviation compared to the calibration medium can be determined and the correct flow parameter, in particular the mass flow, can be determined for each medium.
  • the method according to the invention can be carried out in a particularly advantageous manner in that at least kriging is also used as the interpolation method.
  • Kriging also known as Krigen, is a descendant of Danie Krige
  • Characterization and estimation of data used, for example, to determine the distribution of surface temperatures in land areas or bodies of water. For this purpose, measured values are recorded at individual points in the area to be examined, which are then used as starting points for a spatial interpolation. Any number of estimated values can be determined from a finite number of measured values, which should represent reality as precisely as possible.
  • kriging in comparison to other interpolation methods, in particular also to higher-grade polynomials, a higher degree of accuracy can generally be achieved, particularly with a small number of data points, that is to say with a small basic data set.
  • the result of Kriging cannot be in a closed form, e.g. as a polynomial.
  • Kriging is complex and usually uses inversion and multiplication of several matrices. Since kriging is therefore very computationally and memory-intensive, it should be avoided to use kriging to resolve a coarse basic data set as finely as desired. Rather, it can be for one in terms of time as well
  • Storage requirement-optimized procedure can be advantageous to get a refined matrix from the basic data set by means of kriging in a first stage, eg refined by a factor of 5, 10 or 100, and for a further refinement between the values obtained by means of kriging other, less complex ones
  • Interpolation method can then again be in a closed form, e.g. linear.
  • the table thus shows a basic data set with a data volume for which measurements or
  • a kriging method is now used as the interpolation method on the basic data set of the table according to FIG.
  • the data field is completed so that a data field with a significantly increased resolution is achieved, as is exemplified, for example, from the table in FIG. 2.
  • the kriging process can in principle be programmed by the user himself.
  • suitable kriging software can be purchased or is even available free of charge, including the source code.
  • suitable additional functions such as Microsoft Excel®, such as the XonGrid add-in, which at the time of filing this application under http://xongrid.sourceforge.net/ was available and among others
  • the refined table according to FIG. 2 obtained by means of kriging also shows in the first column the mass flow rate in kg / h that would be measured with a Coriolis flow meter calibrated with water without taking the medium viscosity into account. This mass flow is referred to below as the calibration medium mass flow.
  • the media viscosity in mPas is listed in the first line.
  • the data field can be further refined as required, e.g. by further application of the kriging method or preferably by less complex interpolation methods, such as linear interpolation or higher-grade
  • Fig. 3 shows one from the table.
  • Fig. 2 a developed characteristic diagram, as it can be used for a measurement taking into account the medium viscosity.
  • the characteristics map according to FIG. 3 or the table according to FIG. 2 can be stored in advance in a memory of a measuring device electronics of the Coriolis flow measuring device for further processing or for consideration in the evaluation.
  • a measuring device electronics of the Coriolis flow measuring device for further processing or for consideration in the evaluation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un procédé pour déterminer un paramètre d'écoulement d'un fluide, notamment d'un débit massique, au moyen d'un débitmètre à effet Coriolis d'un type d'appareil de mesure déterminé, ainsi qu'un dispositif adapté à cet effet. Lors du procédé, le fluide qui possède une viscosité de fluide s'écoule à travers au moins un segment de tube de mesure excité en oscillations mécaniques respectivement au moyen d'un signal d'excitation, au moins un signal de mesure dépendant du paramètre d'écoulement, notamment d'un déphasage, est constaté dans le comportement d'oscillation du segment de tube de mesure respectif, et le paramètre d'écoulement est déterminé à partir dudit signal de mesure en tenant compte du fait que le paramètre d'écoulement dépend de la viscosité du fluide. Un champ de données, qui est identifié au moyen d'un procédé d'interpolation, notamment le Krigeage, et qui montre le fait que le paramètre d'écoulement dépend de la viscosité du fluide, est utilisé pour déterminer le paramètre d'écoulement.
EP20760755.7A 2019-06-24 2020-06-24 Procédé et dispositif de détermination d'un paramètre d'écoulement au moyen d'un débitmètre à effet coriolis Withdrawn EP3987253A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019116872.4A DE102019116872A1 (de) 2019-06-24 2019-06-24 Verfahren und Vorrichtung zur Ermittlung eines Strömungsparameters mittels eines Coriolis-Durchflussmessgerätes
PCT/DE2020/100543 WO2020259762A1 (fr) 2019-06-24 2020-06-24 Procédé et dispositif de détermination d'un paramètre d'écoulement au moyen d'un débitmètre à effet coriolis

Publications (1)

Publication Number Publication Date
EP3987253A1 true EP3987253A1 (fr) 2022-04-27

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EP20760755.7A Withdrawn EP3987253A1 (fr) 2019-06-24 2020-06-24 Procédé et dispositif de détermination d'un paramètre d'écoulement au moyen d'un débitmètre à effet coriolis

Country Status (6)

Country Link
US (1) US20220244084A1 (fr)
EP (1) EP3987253A1 (fr)
KR (1) KR20220024747A (fr)
CN (1) CN114286926A (fr)
DE (1) DE102019116872A1 (fr)
WO (1) WO2020259762A1 (fr)

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DE102019123368A1 (de) * 2019-08-30 2021-03-04 Endress + Hauser Flowtec Ag Verfahren und Messgerät zum Bestimmen der Viskosität eines Mediums
DE112021003296A5 (de) 2020-06-18 2023-05-11 Endress+Hauser Flowtec Ag Vibronisches Meßsystem
DE102021202464B3 (de) 2021-03-15 2022-09-08 Rota Yokogawa Gmbh & Co Kg Verfahren zur kompensation des einflusses der reynolds-zahl auf die messung eines coriolis-massendurchflussmessgeräts und derartiges gerät

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DE102015122225A1 (de) * 2015-12-18 2017-06-22 Endress + Hauser Flowtec Ag Verfahren zur Reynoldszahl-Korrektur einer Durchflussmessung eines Coriolis-Durchflussmessgeräts
WO2018208301A1 (fr) * 2017-05-11 2018-11-15 Micro Motion, Inc. Correction d'un débit mesuré pour les effets de la viscosité
DE202017006709U1 (de) 2017-12-07 2018-02-12 Heinrichs Messtechnik Gmbh Coriolis-Massendurchflussmessgerät

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US20220244084A1 (en) 2022-08-04
WO2020259762A1 (fr) 2020-12-30
DE102019116872A1 (de) 2020-12-24
CN114286926A (zh) 2022-04-05

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