JPS57137818A - Straight tube type mass flowmeter - Google Patents

Straight tube type mass flowmeter

Info

Publication number
JPS57137818A
JPS57137818A JP2351781A JP2351781A JPS57137818A JP S57137818 A JPS57137818 A JP S57137818A JP 2351781 A JP2351781 A JP 2351781A JP 2351781 A JP2351781 A JP 2351781A JP S57137818 A JPS57137818 A JP S57137818A
Authority
JP
Japan
Prior art keywords
coil
straight tube
detectors
detected
flow rate
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.)
Pending
Application number
JP2351781A
Other languages
Japanese (ja)
Inventor
Kimishiro Ito
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki Co Ltd
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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP2351781A priority Critical patent/JPS57137818A/en
Publication of JPS57137818A publication Critical patent/JPS57137818A/en
Pending 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
    • 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
    • G01F1/8436—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

Abstract

PURPOSE:To obtain a straight tube type mass flowmeter of simple construction and good accuracy by oscillating the straight tube part in which fluid flows at a constant amplitude and determining the phase difference of an oscillation detector provided at both ends thereof as a time difference signal. CONSTITUTION:A straight pipe part 20 for measuring mass flow rate is fixed to a base 23, and the central part thereof is oscillated at an angular frequency omega by means of a driving coil 26 via a driving fitting 4. The oscillations thereof are detected with a detecting coil 28 and the oscillation waveforms of the part 20 are detected with detectors 28A, 28B, This coil 26 makes the amplitude and angular frequency reduction ratio at the point G of the part 20 constant as the oscillator 31 is controlled by the feedback signal of the coil 28. Here, when fluid passes through the part 20 at a velocity (v) of flow, a phase difference is generated in the amplitude waveforms in the detectors 28A, 28B by Coriolis' force the therefore this phase difference is detected from the waveforms of the detectors 28A, 28B and a time difference DELTAt is determined with a time difference detector 32. Further, the mass flow rate is determined with a flow rate converter 33.
JP2351781A 1981-02-19 1981-02-19 Straight tube type mass flowmeter Pending JPS57137818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2351781A JPS57137818A (en) 1981-02-19 1981-02-19 Straight tube type mass flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2351781A JPS57137818A (en) 1981-02-19 1981-02-19 Straight tube type mass flowmeter

Publications (1)

Publication Number Publication Date
JPS57137818A true JPS57137818A (en) 1982-08-25

Family

ID=12112635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2351781A Pending JPS57137818A (en) 1981-02-19 1981-02-19 Straight tube type mass flowmeter

Country Status (1)

Country Link
JP (1) JPS57137818A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59162416A (en) * 1983-02-21 1984-09-13 シエル・インタ−ナシヨナル・リサ−チ・マ−トスハツペイ・ベ−・ヴエ− Coriolis type mass flowmeter consisting of at least two parallel rectilinear vibrating pipe
JPS61223616A (en) * 1985-03-25 1986-10-04 エルサグ・インターナショナル・ビー・ブイ Device and method for continuously measuring mass flow rate
FR2598801A1 (en) * 1986-05-13 1987-11-20 Assistance Indle Dauphinoise A Mass flowmeter with multimode elasticity
JPS63262526A (en) * 1987-04-20 1988-10-28 Tokico Ltd Mass flowmeter
EP0316908A2 (en) * 1987-11-20 1989-05-24 Endress + Hauser Flowtec AG Process for the measurement of mass flow rate using the Coriolis principle and mass flow rate measuring apparatus using the Coriolis principle
DE3739383A1 (en) * 1987-11-20 1989-06-01 Flowtec Ag Method and device for mass flow measurement using the Coriolis principle
JPH01158346A (en) * 1987-09-04 1989-06-21 Micro Motion Inc Method and apparatus for determining electric modulus of pipe
EP0598287A1 (en) * 1992-11-19 1994-05-25 Oval Corporation Coriolis flowmeter
US5321991A (en) * 1991-08-01 1994-06-21 Micro Motion Incorporated Coriolis effect mass flowmeter
US5473949A (en) * 1991-02-05 1995-12-12 Direct Measurement Corporation Coriolis mass flow rate meter having adjustable pressure and density sensitivity
US5576500A (en) * 1991-02-05 1996-11-19 Direct Measurement Corporation Coriolis mass flow rate meter having means for modifying angular velocity gradient positioned within a conduit
US5753827A (en) * 1995-10-17 1998-05-19 Direct Measurement Corporation Coriolis meteR having a geometry insensitive to changes in fluid pressure and density and method of operation thereof
US5827979A (en) * 1996-04-22 1998-10-27 Direct Measurement Corporation Signal processing apparati and methods for attenuating shifts in zero intercept attributable to a changing boundary condition in a Coriolis mass flow meter
US5907104A (en) * 1995-12-08 1999-05-25 Direct Measurement Corporation Signal processing and field proving methods and circuits for a coriolis mass flow meter
JP2012185163A (en) * 2011-03-07 2012-09-27 Krohne Ag Coriolis mass flowmeter
JP2014531042A (en) * 2011-10-26 2014-11-20 マイクロ モーション インコーポレイテッド Vibrating flow meter juxtaposed sensor
CN111279162A (en) * 2017-10-27 2020-06-12 恩德斯+豪斯流量技术股份有限公司 Coriolis mass flowmeter comprising two measuring tube pairs and method for zero point adjustment of such a mass flowmeter

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59162416A (en) * 1983-02-21 1984-09-13 シエル・インタ−ナシヨナル・リサ−チ・マ−トスハツペイ・ベ−・ヴエ− Coriolis type mass flowmeter consisting of at least two parallel rectilinear vibrating pipe
JPH0462006B2 (en) * 1983-02-21 1992-10-02 Sheru Intern Risaachi Maachatsupii Bv
EP0196150B1 (en) * 1985-03-25 1990-11-07 International Control Automation Finance S.A. Fluid flow measurement
JPS61223616A (en) * 1985-03-25 1986-10-04 エルサグ・インターナショナル・ビー・ブイ Device and method for continuously measuring mass flow rate
JPH0463325B2 (en) * 1985-03-25 1992-10-09 Elsag Int Bv
FR2598801A1 (en) * 1986-05-13 1987-11-20 Assistance Indle Dauphinoise A Mass flowmeter with multimode elasticity
JPS63262526A (en) * 1987-04-20 1988-10-28 Tokico Ltd Mass flowmeter
JPH0769204B2 (en) * 1987-04-20 1995-07-26 トキコ株式会社 Vibration measuring device
JPH01158346A (en) * 1987-09-04 1989-06-21 Micro Motion Inc Method and apparatus for determining electric modulus of pipe
JPH05660B2 (en) * 1987-09-04 1993-01-06 Maikuro Mooshon Inc
DE3739383A1 (en) * 1987-11-20 1989-06-01 Flowtec Ag Method and device for mass flow measurement using the Coriolis principle
EP0316908A2 (en) * 1987-11-20 1989-05-24 Endress + Hauser Flowtec AG Process for the measurement of mass flow rate using the Coriolis principle and mass flow rate measuring apparatus using the Coriolis principle
US5576500A (en) * 1991-02-05 1996-11-19 Direct Measurement Corporation Coriolis mass flow rate meter having means for modifying angular velocity gradient positioned within a conduit
US5473949A (en) * 1991-02-05 1995-12-12 Direct Measurement Corporation Coriolis mass flow rate meter having adjustable pressure and density sensitivity
US5321991A (en) * 1991-08-01 1994-06-21 Micro Motion Incorporated Coriolis effect mass flowmeter
US5398554A (en) * 1992-11-19 1995-03-21 Oval Corporation Coriolis flowmeter with natural frequency adjusting means engaged with the counterbalancing conduit
EP0598287A1 (en) * 1992-11-19 1994-05-25 Oval Corporation Coriolis flowmeter
US5753827A (en) * 1995-10-17 1998-05-19 Direct Measurement Corporation Coriolis meteR having a geometry insensitive to changes in fluid pressure and density and method of operation thereof
US5907104A (en) * 1995-12-08 1999-05-25 Direct Measurement Corporation Signal processing and field proving methods and circuits for a coriolis mass flow meter
US5827979A (en) * 1996-04-22 1998-10-27 Direct Measurement Corporation Signal processing apparati and methods for attenuating shifts in zero intercept attributable to a changing boundary condition in a Coriolis mass flow meter
JP2012185163A (en) * 2011-03-07 2012-09-27 Krohne Ag Coriolis mass flowmeter
JP2014531042A (en) * 2011-10-26 2014-11-20 マイクロ モーション インコーポレイテッド Vibrating flow meter juxtaposed sensor
US9851242B2 (en) 2011-10-26 2017-12-26 Micro Motion, Inc. Collocated sensor for a vibrating fluid meter
CN111279162A (en) * 2017-10-27 2020-06-12 恩德斯+豪斯流量技术股份有限公司 Coriolis mass flowmeter comprising two measuring tube pairs and method for zero point adjustment of such a mass flowmeter
CN111279162B (en) * 2017-10-27 2021-12-28 恩德斯+豪斯流量技术股份有限公司 Mass flowmeter according to the coriolis principle and method for zero point adjustment thereof
US11326920B2 (en) 2017-10-27 2022-05-10 Endress+Hauser Flowtec Ag Coriolis mass flow meter comprising two measuring tube pairs, and method for the zero-point adjustment of such a mass flow meter

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