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I.—Further Experiments with the Ewing Ball-and-Tube Flowmeter

Published online by Cambridge University Press:  15 September 2014

J.H. Awbery  and
Ezer Griffiths
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Extract

The Ewing Flowmeter is a device which may be inserted in a circuit through which liquid is flowing, to give a continuous indication of the rate of flow of the liquid.

The authors, acting on behalf of the Engineering Committee of the Food Investigation Board, have carried out some further experiments, the results of which confirm and supplement those of Sir Alfred Ewing, described by him to the Society in June 1925 (Proc. Roy. Soc. Edin., vol. xlv, p. 308). They have also endeavoured to discuss the results by applying the theory of similitude.

Type
Proceedings
Information
Proceedings of the Royal Society of Edinburgh , Volume 47 , 1928 , pp. 1 - 10
Copyright
Copyright © Royal Society of Edinburgh 1928

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References

page 6 note * This condition is implicitly contained in the equation, through the occurrence of the term D/d; nevertheless it is so fundamental that it is worth while emphasising it by putting it into words.

page 8 note * These are very accurately true to size, and may be obtained in a series of diameter increasing by 64ths of an inch.

page 10 note * We are informed that each individual instrument of the commercial type “the Rotameter” (which has a non-spherical float) is separately calibrated with the liquid for which it is to be used.