CA2111698A1 - A Technique for Determining a Mechanical Zero Value for a Coriolis Meter - Google Patents

A Technique for Determining a Mechanical Zero Value for a Coriolis Meter

Info

Publication number
CA2111698A1
CA2111698A1 CA2111698A CA2111698A CA2111698A1 CA 2111698 A1 CA2111698 A1 CA 2111698A1 CA 2111698 A CA2111698 A CA 2111698A CA 2111698 A CA2111698 A CA 2111698A CA 2111698 A1 CA2111698 A1 CA 2111698A1
Authority
CA
Canada
Prior art keywords
meter
zero value
mechanical zero
technique
determining
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
Application number
CA2111698A
Other languages
French (fr)
Other versions
CA2111698C (en
Inventor
Robert Bruck
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.)
Micro Motion Inc
Original Assignee
Robert Bruck
Micro Motion, Inc.
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 Robert Bruck, Micro Motion, Inc. filed Critical Robert Bruck
Publication of CA2111698A1 publication Critical patent/CA2111698A1/en
Application granted granted Critical
Publication of CA2111698C publication Critical patent/CA2111698C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • G01F1/8431—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
    • G01F1/8472—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having curved measuring conduits, i.e. whereby the measuring conduits' curved center line lies within a plane
    • G01F1/8477—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having curved measuring conduits, i.e. whereby the measuring conduits' curved center line lies within a plane with multiple measuring conduits

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Measuring Volume Flow (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Details Of Flowmeters (AREA)

Abstract

Apparatus and accompanying methods for inclusion in a Coriolis meter for measuring and updating a mechanical zero value for the meter using only zero flow measurements that have a sufficiently low noise content. Specifically, the meter produces zero flow measurements while no fluid is flowing through the meter. If a standard deviation of these zero flow measurements is less than a pre-defined limit value, then a resulting mechanical zero value, based on those measurements, is subsequently subtracted from the flow based measurement data.
CA002111698A 1991-07-11 1992-07-02 A technique for determining a mechanical zero value for a coriolis meter Expired - Lifetime CA2111698C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US728,547 1991-07-11
US07/728,547 US5228327A (en) 1991-07-11 1991-07-11 Technique for determining a mechanical zero value for a coriolis meter

Publications (2)

Publication Number Publication Date
CA2111698A1 true CA2111698A1 (en) 1993-01-21
CA2111698C CA2111698C (en) 1997-06-10

Family

ID=24927287

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002111698A Expired - Lifetime CA2111698C (en) 1991-07-11 1992-07-02 A technique for determining a mechanical zero value for a coriolis meter

Country Status (19)

Country Link
US (1) US5228327A (en)
EP (1) EP0593604B1 (en)
JP (1) JP2583011B2 (en)
KR (1) KR0144126B1 (en)
CN (1) CN1053498C (en)
AT (1) ATE135460T1 (en)
AU (1) AU661022B2 (en)
BR (1) BR9206116A (en)
CA (1) CA2111698C (en)
CZ (1) CZ4494A3 (en)
DE (1) DE69209076T2 (en)
ES (1) ES2086753T3 (en)
HU (1) HU216207B (en)
MX (1) MX9204043A (en)
MY (1) MY110208A (en)
PL (1) PL169832B1 (en)
RU (1) RU2119149C1 (en)
SK (1) SK2894A3 (en)
WO (1) WO1993001472A1 (en)

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US6748813B1 (en) 1998-12-08 2004-06-15 Emerson Electric Company Coriolis mass flow controller
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US6227059B1 (en) 1999-01-12 2001-05-08 Direct Measurement Corporation System and method for employing an imaginary difference signal component to compensate for boundary condition effects on a Coriolis mass flow meter
US6516651B1 (en) * 1999-07-22 2003-02-11 Analog Devices, Inc. Coriolis effect transducer
WO2001071291A1 (en) * 2000-03-23 2001-09-27 Invensys Systems, Inc. Correcting for two-phase flow in a digital flowmeter
US7188534B2 (en) * 2003-02-10 2007-03-13 Invensys Systems, Inc. Multi-phase coriolis flowmeter
US7059199B2 (en) 2003-02-10 2006-06-13 Invensys Systems, Inc. Multiphase Coriolis flowmeter
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US7072775B2 (en) * 2003-06-26 2006-07-04 Invensys Systems, Inc. Viscosity-corrected flowmeter
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US6997033B2 (en) * 2004-02-03 2006-02-14 Emerson Electric Co. Flow meter pickoff assembly and flow meter pickoff adjustment method for nulling flow meter zero offset
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BRPI0418867B1 (en) 2004-06-14 2017-01-24 Micro Motion Inc Coriolis flowmeter and method for determining a cabling signal difference and first and second signal collection sensor
US7337084B2 (en) * 2005-06-21 2008-02-26 Invensys Systems, Inc. Switch-activated zero checking feature for a Coriolis flowmeter
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EP2286187A1 (en) * 2008-05-01 2011-02-23 Micro Motion, Inc. Very high frequency vibratory flow meter
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AU2013205299B2 (en) * 2008-07-30 2016-02-25 Micro Motion, Inc. Optimizing processor operation in a processing system including one or more digital filters
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RU2573751C1 (en) 2012-01-10 2016-01-27 Майкро Моушн, Инк. Field maintenance device and method making easier replacement of processing system in vibration flowmeter
US8590361B1 (en) * 2012-01-27 2013-11-26 Onicon, Inc. Magnetic flow meters with automatic field maintenance
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Also Published As

Publication number Publication date
ATE135460T1 (en) 1996-03-15
AU2308392A (en) 1993-02-11
JP2583011B2 (en) 1997-02-19
HU216207B (en) 1999-05-28
PL169832B1 (en) 1996-09-30
KR0144126B1 (en) 1998-07-15
DE69209076D1 (en) 1996-04-18
MY110208A (en) 1998-02-28
CN1053498C (en) 2000-06-14
JPH06508929A (en) 1994-10-06
AU661022B2 (en) 1995-07-13
RU2119149C1 (en) 1998-09-20
BR9206116A (en) 1994-10-11
HUT65951A (en) 1994-08-29
KR940701534A (en) 1994-05-28
ES2086753T3 (en) 1996-07-01
WO1993001472A1 (en) 1993-01-21
CA2111698C (en) 1997-06-10
EP0593604A1 (en) 1994-04-27
SK2894A3 (en) 1994-08-10
US5228327A (en) 1993-07-20
DE69209076T2 (en) 1996-10-17
MX9204043A (en) 1993-02-01
CZ4494A3 (en) 1994-04-13
EP0593604B1 (en) 1996-03-13
HU9303264D0 (en) 1994-01-28
CN1068420A (en) 1993-01-27

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