WO2010062373A4 - Flow disturbance compensation for magnetic flowmeter - Google Patents
Flow disturbance compensation for magnetic flowmeter Download PDFInfo
- Publication number
- WO2010062373A4 WO2010062373A4 PCT/US2009/005949 US2009005949W WO2010062373A4 WO 2010062373 A4 WO2010062373 A4 WO 2010062373A4 US 2009005949 W US2009005949 W US 2009005949W WO 2010062373 A4 WO2010062373 A4 WO 2010062373A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow
- pipe
- disturbance
- configuration
- transmitter
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
- G01F1/60—Circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
- G01F1/588—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters combined constructions of electrodes, coils or magnetic circuits, accessories therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- 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
Abstract
A transmitter for a magnetic flowmeter comprises a current source, memory and a signal processor. The current source energizes the flowmeter, such that the flowmeter generates an induced electromotive force in response to a process flow. The memory stores a flow configuration that describes a flow pipe disturbance in the process flow. The signal processor determines the flow rate as a function of the induced electromagnetic force, and as a further function of the flow configuration.
Claims
AMENDED CLAIMS received by the International Bureau on 24 June 2010 (24.06.10)
COMPLETE SET OF REPLACEMENT CLAIMS UNDER ARTICLE 19 (PCT Rule 66.8)
1. A transmitter for a magnetic flowmeter, the transmitter comprising: a current source for energizing the flowmeter, such that the flowmeter generates an induced electromotive force in response to a process flow, memory for storing a non-conforming flow configuration, wherein the non-conforming flow configuration describes an actual flow pipe disturbance in the process flow and wherein the flow pipe disturbance is located withm five pipe diameters upstream or two pipe diameters downstream of the magnetic flowmeter, as installed in the process flow; and a signal processor for determining a flow rate as a function of the induced electromotive force and the non-conformmg flow configuration; wherein the signal processor corrects the flow rate based on the flow pipe disturbance such that the magnetic flowmeter achieves a rated accuracy of one fifth percent to less than one half percent in the non-conformmg flow configuration.
3. The transmitter of claim 1, wherein the flow pipe disturbance is located withm five pipe diameters upstream of the magnetic flowmeter
4. The transmitter of claim 1, wherein the flow pipe disturbance is located withm two pipe diameters downstream of the magnetic flowmeter.
6 The transmitter of claim 1 , wherein the flow pipe disturbance comprises a valve
7. The transmitter of claim 1, wherein the flow pipe disturbance comprises a reducer or an expander.
8. The transmitter of claim 1, wherein the flow pipe disturbance comprises an elbow
9. The transmitter of claim 1, wherein the flow pipe disturbance comprises a tee
10 The transmitter of claim 1, wherein the function of the non-conformmg flow configuration comprises a rotational angle of the flow pipe disturbance
11 The transmitter of claim 1, further comprising a local user interface for inputting the non-conformmg flow configuration to the memory.
12 The transmitter of claim 1, further comprising a remote interface for inputting the non-conformmg flow configuration to the memory.
13 A magnetic flowmeter comprising: a pipe section, a coil proximate a radially outer boundary of the pipe section; a current source for energizing the coil to generate a magnetic field inside the pipe section;
a probe extending through the pipe section to sense a Faraday voltage induced by process flow through magnetic field, a storage device for storing a non-conforming flow configuration representing an actual flow pipe disturbance in the process flow, wherein the flow pipe disturbance is located within five pipe diameters upstream or two pipe diameters downstream of the magnetic flowmeter, as installed in the process flow, and a processor to determine a rate of the process flow as a function of the Faraday voltage and to the non-conforming flow configuration, wherein the signal processor corrects the rate of the process flow based on the flow pipe disturbance such that the magnetic flowmeter achieves a rated accuracy of one fifth percent to less than one half percent in the non-conforming flow configuration.
15 The flowmeter of claim 13, wherein the flow pipe disturbance comprises a change in cross-sectional flow area.
16 The flowmeter of claim 13, wherein the flow pipe disturbance comprises a change in flow direction
18 The flowmeter of claim 13, further comprising an interface for inputting the configuration representing the flow pipe disturbance to the storage device.
19 A method for measuring a flow rate, the method comprising- storing a non-conformmg flow configuration describing an actual flow pipe disturbance in a process flow, wherein the flow pipe disturbance is located withm five pipe diameters upstream or two pipe diameters downstream of a magnetic flowmeter, as installed in the process flow, generating a magnetic field across the process flow, sensing an electromotive force induced across the process flow by the magnetic field; determining the flow rate as a function of the electromotive force and as a further function of the non-conforming flow configuration, and correcting the flow rate based on the flow pipe disturbance such that the magnetic flowmeter achieves a rated accuracy of one fifth percent to less than one half percent in the non-conforming flow configuration.
20 The method of claim 19, wherein storing the flow configuration comprises storing an upstream or downstream position of the flow pipe disturbance in the process flow
21 The method of claim 20, wherein storing the flow configuration comprises storing a type of the flow pipe disturbance in the process flow.
15
22 The method of claim 21 , wherein storing the flow configuration comprises storing a rotational angle of the flow pipe disturbance in the process flow.
23. The method of claim 19, wherein the further function of the flow configuration comprises a k-factor based on a calibration of the flow rate when subject to the flow pipe disturbance in the process flow.
16
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011534528A JP5677964B2 (en) | 2008-11-03 | 2009-11-03 | Apparatus and method for compensating turbulence in a magnetic flow meter |
| CN2009801439189A CN102203569B (en) | 2008-11-03 | 2009-11-03 | Flow disturbance compensation for magnetic flowmeter |
| EP09829461.4A EP2350576B1 (en) | 2008-11-03 | 2009-11-03 | Transmitter for a magnetic flowmeter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/290,771 US7779702B2 (en) | 2008-11-03 | 2008-11-03 | Flow disturbance compensation for magnetic flowmeter |
| US12/290,771 | 2008-11-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2010062373A2 WO2010062373A2 (en) | 2010-06-03 |
| WO2010062373A3 WO2010062373A3 (en) | 2010-08-05 |
| WO2010062373A4 true WO2010062373A4 (en) | 2010-10-14 |
Family
ID=42129827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2009/005949 WO2010062373A2 (en) | 2008-11-03 | 2009-11-03 | Flow disturbance compensation for magnetic flowmeter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7779702B2 (en) |
| EP (1) | EP2350576B1 (en) |
| JP (1) | JP5677964B2 (en) |
| CN (1) | CN102203569B (en) |
| WO (1) | WO2010062373A2 (en) |
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| US9696188B2 (en) | 2013-03-14 | 2017-07-04 | Rosemount Inc. | Magnetic flowmeter with automatic adjustment based on sensed complex impedance |
| DE102013106108A1 (en) * | 2013-06-12 | 2014-12-31 | Endress + Hauser Flowtec Ag | Method for determining a compensated flow and / or a compensated flow velocity, ultrasonic flow measuring device and computer program product |
| DE102013013991A1 (en) * | 2013-07-08 | 2015-01-08 | Krohne Messtechnik Gmbh | Magnetic-inductive flowmeter |
| US10663331B2 (en) | 2013-09-26 | 2020-05-26 | Rosemount Inc. | Magnetic flowmeter with power limit and over-current detection |
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| RU2544256C1 (en) * | 2013-11-15 | 2015-03-20 | Александр Михайлович Деревягин | Device to measure speed of fluid medium flow |
| US10641627B2 (en) * | 2013-12-20 | 2020-05-05 | Rosemount Inc. | Magnetic flowmeter with automatic operating setpoint selection |
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| KR20180044301A (en) * | 2015-07-28 | 2018-05-02 | 센텍 리미티드 | Electronic flow sensor |
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| US10969260B1 (en) * | 2017-11-03 | 2021-04-06 | Thompson Equipment Company, Inc. | Magmeter and method of assembly |
| WO2019166908A1 (en) | 2018-02-28 | 2019-09-06 | Abb Schweiz Ag | An electromagnetic flowmeter |
| DE102018108197A1 (en) * | 2018-04-06 | 2019-10-10 | Endress+Hauser Flowtec Ag | Magnetic-inductive flowmeter and measuring point with such |
| US11365995B2 (en) * | 2018-09-28 | 2022-06-21 | Georg Fischer Signet Llc | Magnetic flowmeter including auxiliary electrodes upstream and downstream of the pair of measuring electrodes and an adjustable brace |
| CN112912697A (en) * | 2018-10-29 | 2021-06-04 | Abb瑞士股份有限公司 | Electromagnetic flowmeter assembly with movable magnetic ring |
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-
2008
- 2008-11-03 US US12/290,771 patent/US7779702B2/en active Active
-
2009
- 2009-11-03 EP EP09829461.4A patent/EP2350576B1/en active Active
- 2009-11-03 CN CN2009801439189A patent/CN102203569B/en active Active
- 2009-11-03 JP JP2011534528A patent/JP5677964B2/en active Active
- 2009-11-03 WO PCT/US2009/005949 patent/WO2010062373A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP2350576A4 (en) | 2014-07-30 |
| JP5677964B2 (en) | 2015-02-25 |
| US20100107776A1 (en) | 2010-05-06 |
| JP2012507714A (en) | 2012-03-29 |
| WO2010062373A2 (en) | 2010-06-03 |
| EP2350576A2 (en) | 2011-08-03 |
| WO2010062373A3 (en) | 2010-08-05 |
| CN102203569B (en) | 2013-08-14 |
| EP2350576B1 (en) | 2019-07-31 |
| US7779702B2 (en) | 2010-08-24 |
| CN102203569A (en) | 2011-09-28 |
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