GB1401272A - Flowmeters - Google Patents

Flowmeters

Info

Publication number
GB1401272A
GB1401272A GB1505472*[A GB1505472A GB1401272A GB 1401272 A GB1401272 A GB 1401272A GB 1505472 A GB1505472 A GB 1505472A GB 1401272 A GB1401272 A GB 1401272A
Authority
GB
United Kingdom
Prior art keywords
duct
fluid
metal
flow
vortex
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.)
Expired
Application number
GB1505472*[A
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.)
Kent Instruments Ltd
Original Assignee
Kent Instruments 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 Kent Instruments Ltd filed Critical Kent Instruments Ltd
Priority to GB1505472*[A priority Critical patent/GB1401272A/en
Priority to CA144,890A priority patent/CA982363A/en
Priority to DE2229583A priority patent/DE2229583A1/en
Publication of GB1401272A publication Critical patent/GB1401272A/en
Expired 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
    • G01F1/05—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 mechanical effects
    • G01F1/20—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 mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/3209—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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
    • 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
    • G01F1/05—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 mechanical effects
    • G01F1/20—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 mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1401272 Measuring fluid-flow electrically KENT INSTRUMENTS Ltd 31 May 1972 [17 June 1971 30 March 1972] 28510/71 and 15054/72 Heading G1N A vortex-street fluid-flow meter comprises a bluff body disposed in conduit, the body having a transverse duct 85 sealed by flexible walls 84 which move in response to vortex-shedding and give rise to an electrical output indicating rate of fluid-flow. As shown the duct - which may be air filled - contains a Piezo-electric bimorph 86 which flexes to give an electrical output. Alternatively the walls 84 may be metal (e.g. steel) or metal coated and form capacitors with metal grids fixed in the duct, enabling a differential voltage to be measured. The body has a rectangular section whose sides have a ratio of 3:2. Alternatively a body of circular or square cross-sections may be used. Magnetic detection is also envisaged.
GB1505472*[A 1971-06-17 1972-03-30 Flowmeters Expired GB1401272A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1505472*[A GB1401272A (en) 1971-06-17 1972-03-30 Flowmeters
CA144,890A CA982363A (en) 1971-06-17 1972-06-16 Flowmeters
DE2229583A DE2229583A1 (en) 1971-06-17 1972-06-16 FLOW METER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2851071 1971-06-17
GB1505472*[A GB1401272A (en) 1971-06-17 1972-03-30 Flowmeters

Publications (1)

Publication Number Publication Date
GB1401272A true GB1401272A (en) 1975-07-16

Family

ID=26250990

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1505472*[A Expired GB1401272A (en) 1971-06-17 1972-03-30 Flowmeters

Country Status (3)

Country Link
CA (1) CA982363A (en)
DE (1) DE2229583A1 (en)
GB (1) GB1401272A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002084225A1 (en) * 2001-04-17 2002-10-24 H. Meinecke Ag Vortex-frequency flowmeter

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888120A (en) * 1973-04-26 1975-06-10 Fischer & Porter Co Vortex type flowmeter with strain gauge sensor
DE2408246C3 (en) * 1974-02-21 1981-10-15 Bopp & Reuther Gmbh, 6800 Mannheim Flow meter
DE2458901C3 (en) * 1974-04-23 1986-07-10 The Foxboro Co., Foxboro, Mass. Flow meter
DE2827985C2 (en) * 1977-11-10 1984-03-08 Yokogawa Hokushin Electric Corp., Musashino, Tokyo Flow meter
JPH0690061B2 (en) * 1989-08-21 1994-11-14 三菱自動車工業株式会社 Vortex flowmeter
DE4441129A1 (en) * 1994-11-21 1996-05-23 Junkalor Gmbh Transducer for a vortex flow meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002084225A1 (en) * 2001-04-17 2002-10-24 H. Meinecke Ag Vortex-frequency flowmeter

Also Published As

Publication number Publication date
DE2229583A1 (en) 1973-01-04
CA982363A (en) 1976-01-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee