GB1086628A - Improvements in or relating to the measurement of mass flow rate of gases - Google Patents

Improvements in or relating to the measurement of mass flow rate of gases

Info

Publication number
GB1086628A
GB1086628A GB1402665A GB1402665A GB1086628A GB 1086628 A GB1086628 A GB 1086628A GB 1402665 A GB1402665 A GB 1402665A GB 1402665 A GB1402665 A GB 1402665A GB 1086628 A GB1086628 A GB 1086628A
Authority
GB
United Kingdom
Prior art keywords
gas
pulses
flow rate
output
circuit
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
GB1402665A
Inventor
Kenneth Roy Mclachlan
John William Powell
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.)
WESTWIND TURBINES Ltd
Original Assignee
WESTWIND TURBINES 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 WESTWIND TURBINES Ltd filed Critical WESTWIND TURBINES Ltd
Priority to GB1402665A priority Critical patent/GB1086628A/en
Publication of GB1086628A publication Critical patent/GB1086628A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/76Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/86Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
    • G01F1/90Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure with positive displacement meter or turbine meter to determine the volume flow
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/05Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects
    • G01F1/10Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/05Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects
    • G01F1/10Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
    • G01F1/115Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device

Abstract

1,086,628. Measuring mass flow rate of gases. WESTWIND TURBINES Ltd. March 10, 1966 [April 2, 1965], No.14026/65. Heading G1N. The mass rate of flow of a gas is measured by integrating square pulses having a repetition frequency, duration and amplitude linearly proportional to a respective one of the quantities volumetric flow rate, pressure and the inverse of the temperature of the gas. The gas flows past a turbine having gas lubricated bearings, causing it to rotate at a speed proportional to the volumetric flow-rate of the gas thereby generating pulses at a corresponding frequency by means of a magnetic or capacitive pick-off. These pulses after shaping are supplied to a bi-stable circuit to generate a further series of pulses of the same frequency. Each of the latter pulses is terminated by a feedback circuit including a time constant circuit and a level discriminator supplied with signals from the time constant circuit and from an amplifier connected to a copper resistance thermometer (or a thermocouple). The length of the pulses is thus made inversely proportional to the gas temperature. The pulse amplitude is then controlled in accordance with the output of a further amplifier receiving the output from a diaphragm-type pressure transducer including a strain gauge or an inductive pick-off. The resulting pulses are finally supplied to a moving coil meter. The output may be modified as a function of standard pressure and temperature so that the device indicates the flow rate in units of standard volume for a particular gas. The measuring circuit may also include means for modifying the output in accordance with a selected value of R, the gas constant, so that the device may be used for any gas.
GB1402665A 1965-04-02 1965-04-02 Improvements in or relating to the measurement of mass flow rate of gases Expired GB1086628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1402665A GB1086628A (en) 1965-04-02 1965-04-02 Improvements in or relating to the measurement of mass flow rate of gases

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1402665A GB1086628A (en) 1965-04-02 1965-04-02 Improvements in or relating to the measurement of mass flow rate of gases
NL6604428A NL6604428A (en) 1965-04-02 1966-04-01
DE19661573125 DE1573125A1 (en) 1965-04-02 1966-04-01 Apparatus for measuring the mass flow rate of gases

Publications (1)

Publication Number Publication Date
GB1086628A true GB1086628A (en) 1967-10-11

Family

ID=10033641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1402665A Expired GB1086628A (en) 1965-04-02 1965-04-02 Improvements in or relating to the measurement of mass flow rate of gases

Country Status (3)

Country Link
DE (1) DE1573125A1 (en)
GB (1) GB1086628A (en)
NL (1) NL6604428A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537312A (en) * 1968-06-21 1970-11-03 Westwind Turbines Ltd Mass flow measuring apparatus
US3693435A (en) * 1970-08-19 1972-09-26 John B Cox Time averaging method and apparatus for obtaining fluid measurements
US4941361A (en) * 1988-06-20 1990-07-17 Lew Hyok S Three-in-one flowmeter
DE19735724A1 (en) * 1997-08-18 1999-02-25 Bmw Rolls Royce Gmbh Measurement sensor for gas turbine engine
CN108692825A (en) * 2018-04-24 2018-10-23 河南科技大学 It is a kind of it is exceedingly odious under the conditions of revolving part thermometry

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958443A (en) * 1974-06-17 1976-05-25 Air Products And Chemicals, Inc. Apparatus for proving and calibrating cryogenic flow meters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537312A (en) * 1968-06-21 1970-11-03 Westwind Turbines Ltd Mass flow measuring apparatus
US3693435A (en) * 1970-08-19 1972-09-26 John B Cox Time averaging method and apparatus for obtaining fluid measurements
US4941361A (en) * 1988-06-20 1990-07-17 Lew Hyok S Three-in-one flowmeter
DE19735724A1 (en) * 1997-08-18 1999-02-25 Bmw Rolls Royce Gmbh Measurement sensor for gas turbine engine
CN108692825A (en) * 2018-04-24 2018-10-23 河南科技大学 It is a kind of it is exceedingly odious under the conditions of revolving part thermometry

Also Published As

Publication number Publication date
DE1573125A1 (en) 1970-09-17
NL6604428A (en) 1966-10-03

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