GB891529A - Improvements in or relating to flowmeters - Google Patents

Improvements in or relating to flowmeters

Info

Publication number
GB891529A
GB891529A GB3270158A GB3270158A GB891529A GB 891529 A GB891529 A GB 891529A GB 3270158 A GB3270158 A GB 3270158A GB 3270158 A GB3270158 A GB 3270158A GB 891529 A GB891529 A GB 891529A
Authority
GB
United Kingdom
Prior art keywords
transducer
frequency
output
voltage
fluid
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
GB3270158A
Inventor
Ronald Ernest Fischbacher
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3270158A priority Critical patent/GB891529A/en
Priority to BE581937A priority patent/BE581937A/en
Publication of GB891529A publication Critical patent/GB891529A/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
    • G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters

Abstract

891,529. Ultrasonic fluid-flow meters. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 28, 1959 [Oct. 14, 1958], No. 32701/58. Class 40(7). In an ultrasonic fluid-flow meter two transducers are spaced apart in the direction of fluid flow, each transducer operates continuously both as a transmitter and a receiver, and the transmission frequencies are different. In the embodiment described a voltage compounded from oscillator 1, frequency f 1 and transducer 3 signal received from transducer 4 on a frequency f 2 is multiplied with a similarly derived voltage using transducer 4 signal received by transducer 3, multiplier 8 output being phase-compared with the output of frequency doubler 10 to give an output voltage of magnitude dependent on fluid flow velocity V. A mathematical discussion is given from which it is demonstrated that for high measurement accuracy the maximum allowable difference between the oscillator frequencies necessitates crystal control.
GB3270158A 1958-10-14 1958-10-14 Improvements in or relating to flowmeters Expired GB891529A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3270158A GB891529A (en) 1958-10-14 1958-10-14 Improvements in or relating to flowmeters
BE581937A BE581937A (en) 1958-10-14 1959-08-24 Flowmeters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3270158A GB891529A (en) 1958-10-14 1958-10-14 Improvements in or relating to flowmeters

Publications (1)

Publication Number Publication Date
GB891529A true GB891529A (en) 1962-03-14

Family

ID=10342728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3270158A Expired GB891529A (en) 1958-10-14 1958-10-14 Improvements in or relating to flowmeters

Country Status (2)

Country Link
BE (1) BE581937A (en)
GB (1) GB891529A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568661A (en) * 1968-10-02 1971-03-09 Us Health Education & Welfare Frequency modulated ultrasound technique for measurement of fluid velocity
US3575049A (en) * 1970-01-08 1971-04-13 Atomic Energy Commission Sonic flow meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568661A (en) * 1968-10-02 1971-03-09 Us Health Education & Welfare Frequency modulated ultrasound technique for measurement of fluid velocity
US3575049A (en) * 1970-01-08 1971-04-13 Atomic Energy Commission Sonic flow meter

Also Published As

Publication number Publication date
BE581937A (en) 1960-12-16

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