GB651152A - Improvements relating to flowmeters - Google Patents

Improvements relating to flowmeters

Info

Publication number
GB651152A
GB651152A GB1332448A GB1332448A GB651152A GB 651152 A GB651152 A GB 651152A GB 1332448 A GB1332448 A GB 1332448A GB 1332448 A GB1332448 A GB 1332448A GB 651152 A GB651152 A GB 651152A
Authority
GB
United Kingdom
Prior art keywords
resistance
meter
flow
heater
unbalance voltage
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
GB1332448A
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.)
JOHN ALEXANDER LOVE
Original Assignee
JOHN ALEXANDER LOVE
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 JOHN ALEXANDER LOVE filed Critical JOHN ALEXANDER LOVE
Priority to GB1332448A priority Critical patent/GB651152A/en
Publication of GB651152A publication Critical patent/GB651152A/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
    • G01F1/68—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 thermal effects
    • 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
    • G01F1/68—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 thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6847—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow where sensing or heating elements are not disturbing the fluid flow, e.g. elements mounted outside the flow duct
    • 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
    • G01F1/68—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 thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters

Landscapes

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

Abstract

651,152. Electric indicating systems. LOVE, J. A. May 14, 1948, No. 13324. [Class 40 (i)] In an electric flowmeter fluid passes through a tubular conduit containing a heater coil H intermediately of two double balanced temperature-sensitive resistance coils R1, R2, all disposed in recesses in a heat insulating lining to leave a central bore. The halves of the resistance coils are connected as opposite arms of a D.C. Wheatstone bridge whose unbalance voltage energizes the control winding W of a saturable A.C. fed transformer T1 having its secondary differentially connected with the secondary of a similar transformer T2 without a control winding, to serially energize the heater coil, a rectifier meter N, and an integrating meter I. The bridge is balanced when the downstream resistance, to which the heater is nearer, is at a slightly higher temperature than the upstream resistance, so that at zero flow the unbalance voltage regulates the heater current to a value just sufficient to maintain the system in equilibrium. Increased flow reduces the downstream resistance temperature and the increased unbalance voltage adjusts the heater current to a correspondingly higher value, at which equilibrium is again restored, and the meter N indicates the rate of flow, while the integrating meter I measures the total flow. The rate of flow meter may be resistance shunted to vary the range or rectifier shunted to give a logarithmic response.
GB1332448A 1948-05-14 1948-05-14 Improvements relating to flowmeters Expired GB651152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1332448A GB651152A (en) 1948-05-14 1948-05-14 Improvements relating to flowmeters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1332448A GB651152A (en) 1948-05-14 1948-05-14 Improvements relating to flowmeters

Publications (1)

Publication Number Publication Date
GB651152A true GB651152A (en) 1951-03-14

Family

ID=10020866

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1332448A Expired GB651152A (en) 1948-05-14 1948-05-14 Improvements relating to flowmeters

Country Status (1)

Country Link
GB (1) GB651152A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953022A (en) * 1955-07-08 1960-09-20 Laub John Harry Thermal flow meter
US2972885A (en) * 1954-09-24 1961-02-28 Laub John Harry Flow meter
US3056295A (en) * 1955-07-08 1962-10-02 Laub John Harry Flow meter
US3335606A (en) * 1964-06-16 1967-08-15 Edison Instr Inc Double thermistor flowmeters
US3931736A (en) * 1974-06-28 1976-01-13 Rca Corporation Improved fluid flow sensor configuration
US3945252A (en) * 1975-01-30 1976-03-23 William Victor Fiore Fluid flow measuring apparatus
GB2173905A (en) * 1985-04-12 1986-10-22 Radyne Ltd Fluid-flow monitoring apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972885A (en) * 1954-09-24 1961-02-28 Laub John Harry Flow meter
US2953022A (en) * 1955-07-08 1960-09-20 Laub John Harry Thermal flow meter
US3056295A (en) * 1955-07-08 1962-10-02 Laub John Harry Flow meter
US3335606A (en) * 1964-06-16 1967-08-15 Edison Instr Inc Double thermistor flowmeters
US3931736A (en) * 1974-06-28 1976-01-13 Rca Corporation Improved fluid flow sensor configuration
US3945252A (en) * 1975-01-30 1976-03-23 William Victor Fiore Fluid flow measuring apparatus
GB2173905A (en) * 1985-04-12 1986-10-22 Radyne Ltd Fluid-flow monitoring apparatus

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