CA2547697A1 - Coriolis mass-flow measuring device - Google Patents
Coriolis mass-flow measuring device Download PDFInfo
- Publication number
- CA2547697A1 CA2547697A1 CA002547697A CA2547697A CA2547697A1 CA 2547697 A1 CA2547697 A1 CA 2547697A1 CA 002547697 A CA002547697 A CA 002547697A CA 2547697 A CA2547697 A CA 2547697A CA 2547697 A1 CA2547697 A1 CA 2547697A1
- Authority
- CA
- Canada
- Prior art keywords
- value
- mass flow
- intermediate value
- measuring tube
- representing
- 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.)
- Granted
Links
- 238000011156 evaluation Methods 0.000 claims abstract 11
- 238000005452 bending Methods 0.000 claims abstract 3
- 230000010355 oscillation Effects 0.000 claims 13
- 238000005259 measurement Methods 0.000 claims 7
- 230000006870 function Effects 0.000 claims 5
- 238000000034 method Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000010358 mechanical oscillation Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 abstract 1
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
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
-
- 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
- G01F1/8413—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
-
- 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
- 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
-
- 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
- G01F1/849—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having straight measuring conduits
-
- 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
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Measuring Volume Flow (AREA)
Abstract
Disclosed is a Coriolis mass flowmeter/density meter comprising at least one measuring tube (11) through which a two-phase or multiphase medium flows during operation thereof. A supporting means (12) of the Coriolis mass flowmeter/density meter is fixed to an inlet end and an outlet end of the measuring tube (11), thus clamping the same so as to allow the measuring tube (11) to vibrate. The measuring tube (11) is made to vibrate mechanically, particularly to perform bending vibrations, by means of an excitation system (13). The inventive Coriolis mass flowmeter/density meter further comprises means (141, 142) for generating test signals (xs1, xs2 ) representing vibrations at the inlet end and outlet end of the measuring tube (11). An electronic evaluation unit (2) generates an intermediate value (X'm) that is derived from the test signals (xs1, xs2) and represents an uncorrected mass flow rate as well as a corrected value (XK) for the intermediate value (X m), said corrected value being derived from the test signals (xs1, xs2), especially from a measured value (X) which is also generated in the electronic evaluation unit (2) and represents a density of the medium. The electronic evaluation unit (2) additionally generates a measured value (Xm) representing a mass flow rate with the aid of the intermediate value (X'm) and the corrected value (XK).
Claims (8)
1. Coriolis mass flow meter, especially a Coriolis mass flow/density meter, for measuring a mass flow rate of a medium, especially a two, or more, phase medium, flowing in a pipeline, which Coriolis mass flow meter comprises:
- At least one measuring tube (11) inserted into the course of the pipeline and traversed by the medium during operation;
- a support means (12), which is fixed at an inlet end and an outlet end of the measuring tube (11) and thus holds the measuring tube such that it can oscillate;
- an exciter arrangement (13), which causes the measuring tube (11) to execute mechanical oscillations, especially bending oscillations, during operation;
- oscillation sensors (141, 142) for producing - a first oscillation measurement signal (X s1) representing inlet-end oscillations of the measuring tube (11), as well as - a second oscillation measurement signal (X s2) representing outlet-end oscillations of the measuring tube (11); as well as - an evaluation electronics (2), - which produces a first intermediate value (X'm) derived from the oscillation measurement signals (X s1, X s2) and provisionally representing the mass flow rate to be measured, as well as producing a correction value (X K) derived from the first intermediate value (X'm) for correcting the first intermediate value (X'm), and - which determines, by means of the first intermediate value (X'm) and the correction value (X K), a mass flow rate, measured value (X m,) representing a mass flow rate to be measured, - wherein the evaluation electronics produces the correction value (X K) on the basis of a second intermediate value (X2) derived from the first intermediate value (X'm) and the second intermediate value represents a function value of a power function, X'm n, with the intermediate value (X'm) as base and an, especially rational, exponent (n), which is smaller than zero.
- At least one measuring tube (11) inserted into the course of the pipeline and traversed by the medium during operation;
- a support means (12), which is fixed at an inlet end and an outlet end of the measuring tube (11) and thus holds the measuring tube such that it can oscillate;
- an exciter arrangement (13), which causes the measuring tube (11) to execute mechanical oscillations, especially bending oscillations, during operation;
- oscillation sensors (141, 142) for producing - a first oscillation measurement signal (X s1) representing inlet-end oscillations of the measuring tube (11), as well as - a second oscillation measurement signal (X s2) representing outlet-end oscillations of the measuring tube (11); as well as - an evaluation electronics (2), - which produces a first intermediate value (X'm) derived from the oscillation measurement signals (X s1, X s2) and provisionally representing the mass flow rate to be measured, as well as producing a correction value (X K) derived from the first intermediate value (X'm) for correcting the first intermediate value (X'm), and - which determines, by means of the first intermediate value (X'm) and the correction value (X K), a mass flow rate, measured value (X m,) representing a mass flow rate to be measured, - wherein the evaluation electronics produces the correction value (X K) on the basis of a second intermediate value (X2) derived from the first intermediate value (X'm) and the second intermediate value represents a function value of a power function, X'm n, with the intermediate value (X'm) as base and an, especially rational, exponent (n), which is smaller than zero.
2. Coriolis mass flow meter as claimed in claim 1, - wherein the evaluation electronics (2) delivers a density measured value (X
p) representing a density of the medium and derived from the first and/or the second oscillation measurement signal (X s1, X s2), and - wherein the evaluation electronics (2) determines the correction value (X K) also by means of the density measured value (X p).
p) representing a density of the medium and derived from the first and/or the second oscillation measurement signal (X s1, X s2), and - wherein the evaluation electronics (2) determines the correction value (X K) also by means of the density measured value (X p).
3. Coriolis mass flow meter as claimed in the preceding claim, wherein the evaluation electronics (2) determines by means of the density measured value (X p) a deviation (..DELTA..p) of the density of the medium from a predetermined reference density and the correction value (X K) based on the formula X K = .DELTA.p. X 2 .
4. Coriolis mass flow meter as claimed in the previous claim, wherein the evaluation electronics (2) determines the correction value (X K) based on a polynomial
5. Coriolis mass flow meter as claimed in one of the preceding claims, wherein the evaluation electronics (2) determines the mass flow rate, measured value (X m) based on the formula X m =(1+X K).Xm.
6. Coriolis mass flow meter as claimed in one of the preceding claims, wherein the evaluation electronics (2) has a table memory, in which digitized correction values are stored as a function of the second intermediate value (X2), wherein the table memory delivers the correction value (X K) by means of a digital memory access address formed on the basis of the second intermediate value (X2).
7. Method for producing, by means of a Coriolis mass flow meter, especially a Coriolis mass flow rate/density meter, a first measured value (X m) representing a mass flow rate of a medium flowing in a pipeline, which method comprises the following steps:
- Causing oscillations, especially bending oscillations, of a Coriolis mass flow meter measuring tube (11) traversed by a flowing medium, for producing Coriolis forces;
- registering the oscillations of the measuring tube (11) and producing a first measurement signal (X s1) representing inlet-end oscillations and a second measurement signal (x s2) representing outlet-end oscillations for developing an intermediate value (X'm) provisionally representing the mass flow rate and for developing a correction value (X K) for the intermediate value (X'm), - wherein, for producing the correction value (X K), from the first intermediate value (X'm) a second intermediate value (X2) is derived, which represents a function value of a power function, X'm n", having the intermediate value (X'm) as base and an, especially rational, exponent (n), which is smaller than zero; as well as - correcting the intermediate value (X'm) by means of the correction value (X
K).
- Causing oscillations, especially bending oscillations, of a Coriolis mass flow meter measuring tube (11) traversed by a flowing medium, for producing Coriolis forces;
- registering the oscillations of the measuring tube (11) and producing a first measurement signal (X s1) representing inlet-end oscillations and a second measurement signal (x s2) representing outlet-end oscillations for developing an intermediate value (X'm) provisionally representing the mass flow rate and for developing a correction value (X K) for the intermediate value (X'm), - wherein, for producing the correction value (X K), from the first intermediate value (X'm) a second intermediate value (X2) is derived, which represents a function value of a power function, X'm n", having the intermediate value (X'm) as base and an, especially rational, exponent (n), which is smaller than zero; as well as - correcting the intermediate value (X'm) by means of the correction value (X
K).
8. Method as claimed in claim 7, further comprising the following steps:
- Developing, based on the measurement signals (X s1, X s2), a second measured value (X p) representing a density of the medium; and - developing a correction value (X K) on the basis of the second measured value (X p).
- Developing, based on the measurement signals (X s1, X s2), a second measured value (X p) representing a density of the medium; and - developing a correction value (X K) on the basis of the second measured value (X p).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10358663.6 | 2003-12-12 | ||
| DE10358663.6A DE10358663B4 (en) | 2003-12-12 | 2003-12-12 | Coriolis mass flow measuring device |
| DE102004007889.0 | 2004-02-17 | ||
| DE200410007889 DE102004007889A1 (en) | 2004-02-17 | 2004-02-17 | Coriolis mass flow density meter for measuring a value representing mass flow of a medium flowing in a pipe line allows a two- or multi-phase medium to flow through a measuring tube |
| PCT/EP2004/053322 WO2005057131A2 (en) | 2003-12-12 | 2004-12-07 | Coriolis mass flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2547697A1 true CA2547697A1 (en) | 2005-06-23 |
| CA2547697C CA2547697C (en) | 2011-05-17 |
Family
ID=34680032
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2547699A Expired - Fee Related CA2547699C (en) | 2003-12-12 | 2004-12-07 | Coriolis mass flow measuring device |
| CA2547697A Expired - Fee Related CA2547697C (en) | 2003-12-12 | 2004-12-07 | Coriolis mass-flow measuring device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2547699A Expired - Fee Related CA2547699C (en) | 2003-12-12 | 2004-12-07 | Coriolis mass flow measuring device |
Country Status (4)
| Country | Link |
|---|---|
| EP (2) | EP1692467A2 (en) |
| CA (2) | CA2547699C (en) |
| RU (2) | RU2339007C2 (en) |
| WO (2) | WO2005057131A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005046319A1 (en) | 2005-09-27 | 2007-03-29 | Endress + Hauser Flowtec Ag | Two or multi-phase medium e.g. fluid`s, physical flow parameter e.g. flow rate, measuring method, involves producing measurement values representing parameter by considering pressure difference of medium and by usage of transfer function |
| DE102012011932B4 (en) | 2012-06-18 | 2016-09-15 | Krohne Messtechnik Gmbh | Method for operating a resonance measuring system and related resonance measuring system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524610A (en) * | 1983-09-02 | 1985-06-25 | National Metal And Refining Company, Ltd. | In-line vibratory viscometer-densitometer |
| US5796012A (en) * | 1996-09-19 | 1998-08-18 | Oval Corporation | Error correcting Coriolis flowmeter |
| DE59904728D1 (en) * | 1998-12-11 | 2003-04-30 | Flowtec Ag | Coriolis mass flow / DENSITY METER |
-
2004
- 2004-12-07 WO PCT/EP2004/053322 patent/WO2005057131A2/en active Application Filing
- 2004-12-07 EP EP04804716A patent/EP1692467A2/en not_active Withdrawn
- 2004-12-07 WO PCT/EP2004/053323 patent/WO2005057137A2/en active Application Filing
- 2004-12-07 RU RU2006124841/28A patent/RU2339007C2/en not_active IP Right Cessation
- 2004-12-07 CA CA2547699A patent/CA2547699C/en not_active Expired - Fee Related
- 2004-12-07 CA CA2547697A patent/CA2547697C/en not_active Expired - Fee Related
- 2004-12-07 EP EP04804715A patent/EP1692466A2/en not_active Withdrawn
- 2004-12-07 RU RU2006124840/28A patent/RU2348012C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005057131A2 (en) | 2005-06-23 |
| EP1692466A2 (en) | 2006-08-23 |
| CA2547697C (en) | 2011-05-17 |
| RU2348012C2 (en) | 2009-02-27 |
| WO2005057137A2 (en) | 2005-06-23 |
| CA2547699C (en) | 2011-05-17 |
| WO2005057137A3 (en) | 2005-09-29 |
| RU2006124840A (en) | 2008-01-20 |
| WO2005057131A3 (en) | 2005-09-29 |
| RU2006124841A (en) | 2008-01-20 |
| EP1692467A2 (en) | 2006-08-23 |
| CA2547699A1 (en) | 2005-06-23 |
| RU2339007C2 (en) | 2008-11-20 |
| WO2005057137A9 (en) | 2005-10-27 |
| WO2005057131A9 (en) | 2005-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101821593B (en) | For determining vibratory flowmeter and the method for the fluid temperature (F.T.) of fluent material | |
| KR101206377B1 (en) | Meter electronics and methods for generating a drive signal for a vibratory flowmeter | |
| JP3545344B2 (en) | Coriolis mass flow / specific gravity meter | |
| JP5851601B2 (en) | Vibration type flow meter and zero check method | |
| KR100976233B1 (en) | Diagnostic apparatus and methods for a coriolis flow meter | |
| JP4960967B2 (en) | Instrument electronics and method for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter | |
| US6556931B1 (en) | Apparatus and method for compensating mass flow rate of a material when the density of the material causes an unacceptable error in flow rate | |
| AU2007354291B2 (en) | Vibratory flow meter and method for correcting for entrained gas in a flow material | |
| JP2000505895A (en) | Method and apparatus for pressure measurement in Coriolis mass flow meters | |
| AU2002228947A1 (en) | Apparatus and method for compensating mass flow rate of a material when the density of the material causes an unacceptable error in flow rate | |
| KR20090105979A (en) | Method and apparatus for determining flow pressure using density information | |
| RU2004109150A (en) | METHOD FOR DETERMINING THE SHARE OF THE MAIN COMPONENT OF A FLUID USING CORIOLIS FLOW METER | |
| JP2014522972A5 (en) | ||
| JP2011191315A (en) | Method and apparatus for operating coriolis flowmeters at cryogenic temperatures | |
| WO2008039203A1 (en) | Meter electronics and methods for geometric thermal compensation in a flow meter | |
| CN111936828B (en) | Method for compensating mass flow using known density | |
| CN111566467B (en) | Method for signaling the standard frequency of a densitometer with at least one vibrating measuring tube for a conductive medium | |
| CA2547697A1 (en) | Coriolis mass-flow measuring device | |
| US6412355B1 (en) | Coriolis-type flow meter and method for measuring the mass flow rate of a gaseous or vaporous fluid | |
| WO2006062856A1 (en) | Multi-phase flow meter system and method of determining flow component fractions | |
| JP2024524368A (en) | Non-ideal flow measurement in Coriolis flowmeters and related methods. | |
| JP5952928B2 (en) | Instrument electronics and method for geometric thermal compensation in flow meters | |
| KR20070074673A (en) | Method and apparatus for determining flow pressure using density information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20151207 |