CA2559701A1 - Coriolis mass flow measuring device - Google Patents
Coriolis mass flow measuring device Download PDFInfo
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- CA2559701A1 CA2559701A1 CA002559701A CA2559701A CA2559701A1 CA 2559701 A1 CA2559701 A1 CA 2559701A1 CA 002559701 A CA002559701 A CA 002559701A CA 2559701 A CA2559701 A CA 2559701A CA 2559701 A1 CA2559701 A1 CA 2559701A1
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- measuring tube
- mass flow
- measuring device
- viscosity
- measuring
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Classifications
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- 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
- G01F1/849—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having straight measuring conduits
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- 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
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- 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
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- 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
- G01F1/8418—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 motion or vibration balancing means
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- 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
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- 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
- G01F1/8427—Coriolis or gyroscopic mass flowmeters constructional details detectors
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- 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
- G01F1/8431—Coriolis or gyroscopic mass flowmeters constructional details electronic circuits
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- 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
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- 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
- G01F15/022—Compensating or correcting for variations in pressure, density or temperature using electrical means
- G01F15/024—Compensating or correcting for variations in pressure, density or temperature using electrical means involving digital counting
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- 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
- G01N11/162—Oscillations being torsional, e.g. produced by rotating bodies
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- 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
Abstract
The invention relates to a Coriolis mass flowmeter comprising a vibration-type measuring sensor (1) comprising at least one measuring tube (10) through which a medium can flow during operation. During operation, the measuring tube moves by mechanical vibrations, especially bending vibrations, by means of an exciter arrangement (40). The Coriolis mass flowmeter also comprises a sensor arrangement (50) for generating vibration measuring signals (sl, s2) representing inlet-side and outlet-side vibrations of the measuring tube (10).
Flowmeter electronics (2) controlling the exciter arrangement generate an intermediate value (X'm) which is derived from the vibration measuring signals (s1, s2) and represents an uncorrected mass flow, and an exciter current (iexc) driving the exciter arrangement. An intermediate value (X2) is derived from the exciter current and/or from part of the exciter current (iexc), said value corresponding to a dampening of the vibrations of the measuring tube (11), dependent on an apparent viscosity and/or a viscosity-density product of the medium guided in the measuring tube (11). Furthermore, a correction value (XK) for the intermediate value (X'm) is generated using the intermediate value (X2) and a viscosity measuring value (X.eta.) that is determined previously or during operation and corresponds to a viscosity of the medium guided in the measuring tube and/or a pre-determined reference viscosity. On the basis of the intermediate value (X'm) and the correction value (XK), the flowmeter electronics can then generate an accurate mass flow measuring value (Xm).
Flowmeter electronics (2) controlling the exciter arrangement generate an intermediate value (X'm) which is derived from the vibration measuring signals (s1, s2) and represents an uncorrected mass flow, and an exciter current (iexc) driving the exciter arrangement. An intermediate value (X2) is derived from the exciter current and/or from part of the exciter current (iexc), said value corresponding to a dampening of the vibrations of the measuring tube (11), dependent on an apparent viscosity and/or a viscosity-density product of the medium guided in the measuring tube (11). Furthermore, a correction value (XK) for the intermediate value (X'm) is generated using the intermediate value (X2) and a viscosity measuring value (X.eta.) that is determined previously or during operation and corresponds to a viscosity of the medium guided in the measuring tube and/or a pre-determined reference viscosity. On the basis of the intermediate value (X'm) and the correction value (XK), the flowmeter electronics can then generate an accurate mass flow measuring value (Xm).
Claims (19)
1. Coriolis mass flow measuring device, especially a Coriolis mass flow rate/density measuring device, or a Coriolis mass flow rate/viscosity measuring device, for measuring the mass flow rate of a medium flowing in a pipeline, especially a medium of two or more phases, which Coriolis mass flow measuring device comprises a vibratory transducer (1) and a measuring device electronics (2) electrically coupled to the transducer, - wherein the transducer (1) has:
-- at least one measuring tube (10) to be interposed in the pipeline, especially an essentially straight measuring tube, for guiding the medium to be measured, in communication with the connected pipeline, -- an exciter arrangement (40) acting on the measuring tube (10) for causing the at least one measuring tube (10) to vibrate with lateral oscillations, especially bending oscillations, at least at times, and/or at least in part, during operation, as well as -- a sensor arrangement (50) for registering vibrations of the at least one measuring tube (10), which delivers at least one, first oscillation measurement signal (S1) representing oscillations of the measuring tube at the inlet end and at least one, second oscillation measurement signal (S2) representing oscillations of the measuring tube at the outlet end, and - wherein the measuring device electronics (2) -- delivers, at least at times, an exciter current (i exc) driving the exciter arrangement (40) and, at least at times, a mass flow rate measurement value (X m) representing a mass flow rate to be measured, -- produces a first intermediate value (X'm) derived from the oscillation measurement signals (S1, S2) and corresponding to the mass flow rate to be measured and/or to a phase difference between the two oscillation measurement signals (S1, S2), as well as a second intermediate value (X2) derived from the exciter current (i exc), and/or from a component of the exciter current (i exc), and corresponding to a damping of the oscillations of the measuring tube (10), especially a damping dependent on an apparent viscosity, and/or a viscosity-density product, of the medium guided in the measuring tube (10), as well as -- uses the second intermediate value (X2) and a viscosity measurement value (X .eta.) predetermined, or determined during operation, especially by use of the transducer (1) and/or the measuring device electronics (2), and corresponding to a viscosity of the medium guided in the measuring tube (10) and/or to a previously supplied, reference viscosity, to produce a correction value (X K) for the first intermediate value (X'm), and, on the basis of the first intermediate value (X'm) and the correction value (X K), to produce the mass flow rate measurement value (X m).
-- at least one measuring tube (10) to be interposed in the pipeline, especially an essentially straight measuring tube, for guiding the medium to be measured, in communication with the connected pipeline, -- an exciter arrangement (40) acting on the measuring tube (10) for causing the at least one measuring tube (10) to vibrate with lateral oscillations, especially bending oscillations, at least at times, and/or at least in part, during operation, as well as -- a sensor arrangement (50) for registering vibrations of the at least one measuring tube (10), which delivers at least one, first oscillation measurement signal (S1) representing oscillations of the measuring tube at the inlet end and at least one, second oscillation measurement signal (S2) representing oscillations of the measuring tube at the outlet end, and - wherein the measuring device electronics (2) -- delivers, at least at times, an exciter current (i exc) driving the exciter arrangement (40) and, at least at times, a mass flow rate measurement value (X m) representing a mass flow rate to be measured, -- produces a first intermediate value (X'm) derived from the oscillation measurement signals (S1, S2) and corresponding to the mass flow rate to be measured and/or to a phase difference between the two oscillation measurement signals (S1, S2), as well as a second intermediate value (X2) derived from the exciter current (i exc), and/or from a component of the exciter current (i exc), and corresponding to a damping of the oscillations of the measuring tube (10), especially a damping dependent on an apparent viscosity, and/or a viscosity-density product, of the medium guided in the measuring tube (10), as well as -- uses the second intermediate value (X2) and a viscosity measurement value (X .eta.) predetermined, or determined during operation, especially by use of the transducer (1) and/or the measuring device electronics (2), and corresponding to a viscosity of the medium guided in the measuring tube (10) and/or to a previously supplied, reference viscosity, to produce a correction value (X K) for the first intermediate value (X'm), and, on the basis of the first intermediate value (X'm) and the correction value (X K), to produce the mass flow rate measurement value (X m).
2. Coriolis mass flow measuring device as claimed in claim 1, wherein the correction value (X K) represents a deviation of the viscosity of the medium from an apparent viscosity of the medium guided in the measuring tube (10), determined in operation on the basis of the exciter current (i exc) and/or on the basis of a component of the exciter current (i exc) and/or from a viscosity-density product of the medium guided in the measuring tube (10), determined in operation on the basis of the exciter current (i exc).
3. Coriolis mass flow measuring device as claimed in the preceding claim, wherein the measuring device electronics (2) determines the correction value (X K) on the basis of a comparison of the second intermediate value (X2) with the viscosity measurement value (X.eta.) and/or on the basis of a difference existing between the second intermediate value (X2) and the viscosity measurement value (X.eta.).
4. Coriolis mass flow measuring device as claimed in one of the preceding claims, wherein the measuring device electronics (2) produces the second intermediate value (X2) also using at least one of the oscillation measurement signals (S1, S2).
5. Coriolis mass flow measuring device as claimed in one of the preceding claims, - wherein the exciter arrangement (40) causes the measuring tube (10) at least at times and/or at least in part, during operation, to execute torsional oscillations about an imaginary measuring tube longitudinal axis essentially aligned with the measuring tube (10), especially a principal axis of inertia of the measuring tube (10), especially torsional oscillations alternating with the lateral oscillations or at times superimposed therewith, and - wherein the measuring device electronics (2) also determines the viscosity measurement value (X.eta.) on the basis of the exciter current (i exc) , or a component of the exciter current (i exc), driving the exciter arrangement (40).
6. Coriolis mass flow measuring device as claimed in the preceding claim, wherein the measuring tube (10), derived by the exciter arrangement (40), executes torsional oscillations with a measuring tube torsional oscillation frequency, which is tuned to be different from a measuring tube bending oscillation frequency with which the measuring tube (10), driven by the exciter arrangement (40), executes bending oscillations.
7. Coriolis mass flow measuring device as claimed in one of the preceding claims, especially claim 5, wherein the measuring device electronics (2) also produces the viscosity measurement value (X.eta.).
8. Coriolis mass flow measuring device as claimed in the preceding claim, - wherein the measuring device electronics (2) delivers a density measurement value (X .rho.) representing a density of the medium and derived from the first and/or from the second oscillation measurement signal (S1, S2) and - wherein the measuring device electronics (2) determines the correction value (X K), especially the viscosity measurement value (X.eta.), also on the basis of the density measurement value (X.rho.).
9. Coriolis mass flow measurement device as claimed in one of the preceding claims, wherein the measuring device electronics (2) is coupled with an external viscosity measuring device, especially such a device arranged remotely from the Coriolis mass flow measuring device, and the external viscosity measuring device delivers, at least at times, the viscosity measurement value (X.eta.).
10. Coriolis mass flow measuring device as claimed in one of the preceding claims, wherein the measuring device electronics (2), at least at times, is coupled with a pressure sensor, which at least at times delivers a pressure difference measurement value (X.DELTA..rho.) representing a pressure difference measured along the pipeline.
11. Coriolis mass flow measuring device as claimed in one of the preceding claims, wherein the measuring device electronics (2) determines, at least at times, a concentration measurement value (X c), which represents, in the case of a two- or more-phase medium in the measuring tube, a volume- and/or mass-fraction of a medium phase, especially a relative fraction, - on the basis of the exciter current (i exc) and/or on the basis of a component of the exciter current (i exc), as well as - with use of the viscosity measurement value (X.eta.).
12. Coriolis mass flow measuring device as claimed in one of the preceding claims, - wherein the measuring tube (11) communicates with the connected pipeline via an inlet tube piece (11) opening into an inlet end (11#) and via an outlet tube piece (12) opening into an outlet end (12#), and - wherein the transducer includes, fixed at the inlet end (11#) and at the outlet end (12#) of the measuring tube (10), especially also mechanically coupled with the exciter arrangement, a counter-oscillator (20), which vibrates during operation at least at times, especially with phase opposite to that of the measuring tube (10).
13. Use of a Coriolis mass flow measuring device as claimed in one of the preceding claims for measuring a mass flow rate of a two- or more-phase medium, especially a liquid-gas mixture, flowing in a pipeline.
14. Method for measuring a mass flow rate of a medium, especially a medium of two or more phases, flowing in a pipeline, using a Coriolis mass flow measuring device having a vibratory transducer (1) and a measuring device electronics (2) electrically coupled with the transducer, which method comprises the following steps:
- flowing the medium to be measured through at least one measuring tube (10) of the transducer (1) communicating with the pipeline and feeding an exciter current (i exc) into an exciter arrangement (40) mechanically coupled to the measuring tube (10) guiding the medium for causing mechanical oscillations, especially bending oscillations, of the measuring tube (10), - letting the measuring tube (10) vibrate in an oscillation mode suited for producing Coriolis forces in the medium flowing therethrough, - registering vibrations of the measuring tube (10) and producing a first oscillation measurement signal (S1) representing inlet-end oscillations and a second oscillation measurement signal (S2) representing outlet-end oscillations, - developing, using the two oscillation measurement signals (S1, S2), a first intermediate value (X'm) corresponding to the mass flow rate to be measured and/or to a phase difference between the two oscillation measurement signals (S1, S2), - determining a second intermediate value (X2) derived from the exciter current (i exc) and corresponding to a damping of the oscillations of the measuring tube (10), especially a damping dependent on an apparent viscosity and/or a viscosity-density product of the medium guided in the measuring tube (10), - producing a correction value (X K) for the first intermediate value (X'm) by means of the second intermediate value (X2) and by means of an initially determined viscosity measurement value (X.eta.), especially by use of the transducer (1) and/or the measuring device electronics (2), corresponding to a viscosity of the medium guided in the measuring tube (10), as well as - correcting the first intermediate value (X'm) by means of the correction value (X K) and producing a mass flow rate measurement value (X m) representing the mass flow rate to be measured.
- flowing the medium to be measured through at least one measuring tube (10) of the transducer (1) communicating with the pipeline and feeding an exciter current (i exc) into an exciter arrangement (40) mechanically coupled to the measuring tube (10) guiding the medium for causing mechanical oscillations, especially bending oscillations, of the measuring tube (10), - letting the measuring tube (10) vibrate in an oscillation mode suited for producing Coriolis forces in the medium flowing therethrough, - registering vibrations of the measuring tube (10) and producing a first oscillation measurement signal (S1) representing inlet-end oscillations and a second oscillation measurement signal (S2) representing outlet-end oscillations, - developing, using the two oscillation measurement signals (S1, S2), a first intermediate value (X'm) corresponding to the mass flow rate to be measured and/or to a phase difference between the two oscillation measurement signals (S1, S2), - determining a second intermediate value (X2) derived from the exciter current (i exc) and corresponding to a damping of the oscillations of the measuring tube (10), especially a damping dependent on an apparent viscosity and/or a viscosity-density product of the medium guided in the measuring tube (10), - producing a correction value (X K) for the first intermediate value (X'm) by means of the second intermediate value (X2) and by means of an initially determined viscosity measurement value (X.eta.), especially by use of the transducer (1) and/or the measuring device electronics (2), corresponding to a viscosity of the medium guided in the measuring tube (10), as well as - correcting the first intermediate value (X'm) by means of the correction value (X K) and producing a mass flow rate measurement value (X m) representing the mass flow rate to be measured.
15. Method as claimed in the preceding claim, comprising the following additional step of:
- causing bending oscillations in the measuring tube (10) for producing Coriolis forces in the medium flowing therethrough.
- causing bending oscillations in the measuring tube (10) for producing Coriolis forces in the medium flowing therethrough.
16. Method as claimed in the preceding claim, comprising the following additional steps of:
- causing torsional oscillations in the measuring tube, especially torsional oscillations superimposed on the bending oscillations, and - determining a second intermediate value (X2) taking into consideration the exciter current (i exc and/or at least a component of the exciter current (i exc) causing the torsional oscillations of the measuring tube (10).
- causing torsional oscillations in the measuring tube, especially torsional oscillations superimposed on the bending oscillations, and - determining a second intermediate value (X2) taking into consideration the exciter current (i exc and/or at least a component of the exciter current (i exc) causing the torsional oscillations of the measuring tube (10).
17. Method as claimed in one of the claims 14 to 16, wherein the step of producing the correction value (X K) for the intermediate value (X'm) comprises the following steps:
- Comparing the second intermediate value (X2) with the viscosity measurement value (X.rho.) and/or determining a difference existing between the second intermediate value (X2) and the viscosity measurement value (X .eta.), and - determining a deviation of the viscosity of the medium from an apparent viscosity of the medium guided in the measuring tube (10), determined during operation on the basis of the exciter current (i exc), and/or from a viscosity-density product of the medium guided in the measuring tube, determined during operation on the basis of the exciter current (i exc).
- Comparing the second intermediate value (X2) with the viscosity measurement value (X.rho.) and/or determining a difference existing between the second intermediate value (X2) and the viscosity measurement value (X .eta.), and - determining a deviation of the viscosity of the medium from an apparent viscosity of the medium guided in the measuring tube (10), determined during operation on the basis of the exciter current (i exc), and/or from a viscosity-density product of the medium guided in the measuring tube, determined during operation on the basis of the exciter current (i exc).
18. Method as claimed in one of the claims 14 to 17, comprising the following additional steps of:
- Developing on the basis of the oscillation measurement signals (S1, S2) a second measurement value (X.rho.) representing a density of the medium, and - developing a correction value (X K) using the second measurement value (X P).
- Developing on the basis of the oscillation measurement signals (S1, S2) a second measurement value (X.rho.) representing a density of the medium, and - developing a correction value (X K) using the second measurement value (X P).
19. Use of the method as claimed in one of the claims 14 to 18 for calibrating a Coriolis mass flow measuring device and/or a vibratory transducer having at least one measuring tube.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004014029A DE102004014029A1 (en) | 2004-03-19 | 2004-03-19 | In-line device for fluid measurements, e.g. mass flow rate, has vibratory measurement tube inside outer housing with flanges at each end and fitted with vibration sensors |
DE102004014029.4 | 2004-03-19 | ||
DE102004021690.8 | 2004-04-30 | ||
DE102004021690.8A DE102004021690B4 (en) | 2004-04-30 | 2004-04-30 | In-line meter with a vibration-type sensor |
PCT/EP2005/051198 WO2005095901A2 (en) | 2004-03-19 | 2005-03-16 | Coriolis mass flowmeter |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2559701A1 true CA2559701A1 (en) | 2005-10-13 |
CA2559701C CA2559701C (en) | 2012-05-22 |
Family
ID=34961435
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2559701A Expired - Fee Related CA2559701C (en) | 2004-03-19 | 2005-03-16 | Coriolis mass flow measuring device |
CA2559564A Expired - Fee Related CA2559564C (en) | 2004-03-19 | 2005-03-16 | In-line measuring device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2559564A Expired - Fee Related CA2559564C (en) | 2004-03-19 | 2005-03-16 | In-line measuring device |
Country Status (6)
Country | Link |
---|---|
EP (2) | EP1725840B1 (en) |
JP (2) | JP4531807B2 (en) |
CA (2) | CA2559701C (en) |
DK (1) | DK1725839T3 (en) |
RU (2) | RU2339916C2 (en) |
WO (2) | WO2005095901A2 (en) |
Cited By (3)
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US8695438B2 (en) | 2008-12-10 | 2014-04-15 | Micro Motion, Inc. | Method and apparatus for vibrating a flow tube of a vibrating flow meter |
EP2775272A1 (en) * | 2013-03-06 | 2014-09-10 | Services Pétroliers Schlumberger | Coriolis flow meter for wet gas measurement |
US9778091B2 (en) | 2014-09-29 | 2017-10-03 | Schlumberger Technology Corporation | Systems and methods for analyzing fluid from a separator |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005012505B4 (en) * | 2005-02-16 | 2006-12-07 | Krohne Ag | Method for operating a mass flowmeter |
JP5114427B2 (en) * | 2005-12-27 | 2013-01-09 | エンドレス ウント ハウザー フローテック アクチエンゲゼルシャフト | Inline measuring device and method for correcting measurement error in inline measuring device |
FI120559B (en) * | 2006-01-17 | 2009-11-30 | Sandvik Mining & Constr Oy | Method for measuring a voltage wave, measuring device and rock crushing device |
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- 2005-03-16 EP EP05717067.2A patent/EP1725840B1/en active Active
- 2005-03-16 JP JP2007503344A patent/JP4531807B2/en not_active Expired - Fee Related
- 2005-03-16 DK DK05717065.6T patent/DK1725839T3/en active
- 2005-03-16 RU RU2006136903/28A patent/RU2339916C2/en active
- 2005-03-16 WO PCT/EP2005/051198 patent/WO2005095901A2/en active Application Filing
- 2005-03-16 JP JP2007503343A patent/JP4703640B2/en not_active Expired - Fee Related
- 2005-03-16 CA CA2559701A patent/CA2559701C/en not_active Expired - Fee Related
- 2005-03-16 EP EP05717065.6A patent/EP1725839B1/en active Active
- 2005-03-16 RU RU2006136905/28A patent/RU2359236C2/en active
- 2005-03-16 CA CA2559564A patent/CA2559564C/en not_active Expired - Fee Related
- 2005-03-16 WO PCT/EP2005/051200 patent/WO2005090926A2/en active Application Filing
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US8695438B2 (en) | 2008-12-10 | 2014-04-15 | Micro Motion, Inc. | Method and apparatus for vibrating a flow tube of a vibrating flow meter |
EP2775272A1 (en) * | 2013-03-06 | 2014-09-10 | Services Pétroliers Schlumberger | Coriolis flow meter for wet gas measurement |
US9366559B2 (en) | 2013-03-06 | 2016-06-14 | Schlumberger Technology Corporation | Coriolis flow meter |
US9778091B2 (en) | 2014-09-29 | 2017-10-03 | Schlumberger Technology Corporation | Systems and methods for analyzing fluid from a separator |
Also Published As
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CA2559564A1 (en) | 2005-09-29 |
EP1725840B1 (en) | 2020-11-25 |
WO2005090926A3 (en) | 2005-10-27 |
RU2006136903A (en) | 2008-04-27 |
JP4703640B2 (en) | 2011-06-15 |
DK1725839T3 (en) | 2014-03-17 |
RU2359236C2 (en) | 2009-06-20 |
JP2007529729A (en) | 2007-10-25 |
WO2005095901A2 (en) | 2005-10-13 |
EP1725839A2 (en) | 2006-11-29 |
CA2559564C (en) | 2013-06-25 |
RU2006136905A (en) | 2008-04-27 |
CA2559701C (en) | 2012-05-22 |
EP1725839B1 (en) | 2014-01-08 |
WO2005090926A2 (en) | 2005-09-29 |
WO2005095901A3 (en) | 2005-12-22 |
JP4531807B2 (en) | 2010-08-25 |
EP1725840A2 (en) | 2006-11-29 |
JP2007529728A (en) | 2007-10-25 |
RU2339916C2 (en) | 2008-11-27 |
WO2005090926A9 (en) | 2020-05-14 |
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