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RESEARCH PAPERS

Metering Performance Investigation and Substantiation of the “Universal Venturi Tube” (U.V.T.): Part 1—Hydraulic Shape and Discharge Coefficient

[+] Author and Article Information
D. Halmi

Flow Meter Engineering BIF, A Unit of General Signal, Providence, R. I.

J. Fluids Eng 96(2), 124-131 (Jun 01, 1974) (8 pages) doi:10.1115/1.3447118 History: Received July 23, 1973; Online October 12, 2010

Abstract

The UVT provides Classical Venturi tube type metering performance with less than half the laying length, no annular chambers, and about half the permanent head loss. Data presented reveal the flow mechanism inside the tube and substantiate its performance over a wide range of Reynolds numbers, line sizes, beta ratios, tube materials, upstream and downstream piping configurations for incompressible and compressible flow. The experience of the past five years indicates ± 0.5 percent two times standard deviation uncalibrated accuracy for C.I. UVT’s. Due to its depth and method, the substantiation work was unique; consequently, it is recommended as a standard procedure for the performance substantiation of any kind of flow meter presently in use or to be introduced in the future.

Copyright © 1974 by ASME
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