GB830211A - Improvements relating to the measurement of fluid velocity - Google Patents
Improvements relating to the measurement of fluid velocityInfo
- Publication number
- GB830211A GB830211A GB938955A GB938955A GB830211A GB 830211 A GB830211 A GB 830211A GB 938955 A GB938955 A GB 938955A GB 938955 A GB938955 A GB 938955A GB 830211 A GB830211 A GB 830211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- fluid
- clamped
- flow
- velocity
- 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
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
- G01F1/28—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 by drag-force, e.g. vane type or impact flowmeter
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
830,211. Electric measuring devices. MINISTER OF POWER. June 28, 1956 [March 31, 1955], No. 9389/55. Class 40 (1). In apparatus for measuring the velocity of flow of a fluid of determined density, an elastic diaphragm, on which is mounted a number of resistor-type strain gauges, is disposed normal to the fluid flow, the strain thereby imparted to the diaphragm being measured to obtain an indication of flow velocity. A conical section may be attached to the apparatus to increase the flow velocity at the diaphragm, which may be of metal or of other resilient material and which may be protected from the action of the fluid by a heat-proof and moisture-proof covering, as may the strain gauges. The diaphragm may be rectangular, one side or two opposite sides being clamped to a fixed mounting, or trapesoidal, one of the parallel sides being clamped, or of any conveient shape (e.g. square or circular) and peripherally clamped. Fig. 7 shows a paddle-shaped diaphragm comprising a circular portion 1b which is presented to the fluid flow, and a stem 1a, on one or each of whose faces is mounted a strain gauge 3. Fig. 8 depicts a measuring head in which one end of a blade-like diaphragm 1 is clamped within a casing including a tube 4, from the mouth of which the free end of the diaphragm 1 extends into the stream of fluid A, strain gauges 3 being cemented to both faces of the enclosed part of the diaphragm 1 and connected by cables 5 in a bridge measuring circuit, or in series with a battery, the voltage changes across one resistance being measured. Use of a cathode-ray oscillograph for transient indication, and use of a pen recorder for continuous recording, are mentioned. The apparatus may be used to measure high velocity gas flows in e.g. windtunnels, gas turbine engines, aircraft (for determining air speeds) and explosions of gas and dusts, and may be adapted to measure low air velocities.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB938955A GB830211A (en) | 1955-03-31 | 1955-03-31 | Improvements relating to the measurement of fluid velocity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB938955A GB830211A (en) | 1955-03-31 | 1955-03-31 | Improvements relating to the measurement of fluid velocity |
Publications (1)
Publication Number | Publication Date |
---|---|
GB830211A true GB830211A (en) | 1960-03-09 |
Family
ID=9871037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB938955A Expired GB830211A (en) | 1955-03-31 | 1955-03-31 | Improvements relating to the measurement of fluid velocity |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB830211A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3340733A (en) * | 1964-09-28 | 1967-09-12 | Exxon Research Engineering Co | Design for a strain gauge target flow meter |
US4157661A (en) * | 1978-03-07 | 1979-06-12 | Milltronics Limited | Flowmeters |
DE2802830A1 (en) * | 1978-01-23 | 1979-07-26 | Gerhard Dr Ing Mueller | Measurement of fluid or gas flow speed - involves using measurement of resultant sheet or diaphragm deformation or deflection |
GB2128744A (en) * | 1982-10-19 | 1984-05-02 | John Frederick Stanley Holmes | Flowmeter |
WO1994006271A1 (en) * | 1992-09-16 | 1994-03-31 | Micro-Trak Systems, Inc. | Apparatus for measuring agricultural yield |
EP2230489A1 (en) * | 2009-03-21 | 2010-09-22 | Huba Control Ag | Pressure sensor for exhaust gas recirculation systems of combustion motors |
WO2011067734A1 (en) * | 2009-12-03 | 2011-06-09 | Feather Sensors Llc | Method and apparatus for intelligent flow sensors |
WO2012101490A2 (en) | 2010-12-31 | 2012-08-02 | Ingegnerie Toscane S.R.L. | A device for measuring the flowrate of a fluid |
-
1955
- 1955-03-31 GB GB938955A patent/GB830211A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3340733A (en) * | 1964-09-28 | 1967-09-12 | Exxon Research Engineering Co | Design for a strain gauge target flow meter |
DE2802830A1 (en) * | 1978-01-23 | 1979-07-26 | Gerhard Dr Ing Mueller | Measurement of fluid or gas flow speed - involves using measurement of resultant sheet or diaphragm deformation or deflection |
US4157661A (en) * | 1978-03-07 | 1979-06-12 | Milltronics Limited | Flowmeters |
GB2128744A (en) * | 1982-10-19 | 1984-05-02 | John Frederick Stanley Holmes | Flowmeter |
WO1994006271A1 (en) * | 1992-09-16 | 1994-03-31 | Micro-Trak Systems, Inc. | Apparatus for measuring agricultural yield |
EP2230489A1 (en) * | 2009-03-21 | 2010-09-22 | Huba Control Ag | Pressure sensor for exhaust gas recirculation systems of combustion motors |
WO2011067734A1 (en) * | 2009-12-03 | 2011-06-09 | Feather Sensors Llc | Method and apparatus for intelligent flow sensors |
WO2012101490A2 (en) | 2010-12-31 | 2012-08-02 | Ingegnerie Toscane S.R.L. | A device for measuring the flowrate of a fluid |
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