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Piezometer ring

For the flow not to be appreciably disturbed, the diameter of the instrument must not exceed about one-fiftieth of the diameter of the pipe the standard instrument (diameter 7.94 mm) should therefore not be used in pipes of less than 0.4 m diameter. An accurate measurement of the impact pressure can be obtained using a tube of very small diameter with its open end at right angles to the direction of flow hypodermic tubing is convenient for this purpose. The static pressure is measured using a single piezometer tube or a piezometer ring upstream at a distance equal approximately to the diameter of the pipe measurement should be made at least 50 diameters from any bend or obstruction. [Pg.245]

See other pages where Piezometer ring is mentioned: [Pg.885]    [Pg.234]    [Pg.249]    [Pg.254]    [Pg.886]    [Pg.11]    [Pg.444]    [Pg.708]    [Pg.1044]    [Pg.214]    [Pg.1047]    [Pg.234]    [Pg.249]    [Pg.254]    [Pg.889]    [Pg.457]    [Pg.282]    [Pg.885]    [Pg.234]    [Pg.249]    [Pg.254]    [Pg.886]    [Pg.11]    [Pg.444]    [Pg.708]    [Pg.1044]    [Pg.214]    [Pg.1047]    [Pg.234]    [Pg.249]    [Pg.254]    [Pg.889]    [Pg.457]    [Pg.282]    [Pg.206]    [Pg.59]    [Pg.60]    [Pg.59]    [Pg.60]   
See also in sourсe #XX -- [ Pg.214 ]

See also in sourсe #XX -- [ Pg.234 ]



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Piezometer

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