Premium
Effects of Pipe Wall Offsets on Differential Pressure Meter Accuracy
Author(s) -
Pope Jesse M.,
Barfuss Steven L.,
Johnson Michael C.,
Sharp Zachary B.
Publication year - 2015
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.5942/jawwa.2015.107.0081
Subject(s) - venturi effect , magnetic flow meter , positive displacement meter , flow measurement , thermal mass flow meter , piping , metre , gas meter prover , mass flow meter , flow conditioning , differential pressure , reynolds number , acoustics , ultrasonic flow meter , pressure measurement , wedge (geometry) , mechanics , materials science , engineering , inlet , turbulence , optics , mechanical engineering , mathematics , physics , geometry , mathematical proof , astronomy
Accurate flow measurement is essential for the management of any type of fluid system. This research investigated the effect on accuracy that five types of 12‐in. differential‐pressure flow meters have as a result of being installed in pipelines of differing inside diameter. The types of meters chosen for this research were the classical Venturi meter, Halmi Venturi Tube, wedge meter, V‐cone meter, and the X‐meter. Each meter was tested for accuracy with10 pipe wall offsets varying from a 0.125‐in. sudden contraction to a 0.937‐in. sudden expansion of the pipe radius. The meters' reading during each test series was compared with the meters' reading with no pipe wall offset at the same Reynolds number. This research demonstrated that for accurate flow measurement, most flow meters require that the inside diameter of the piping be the same as the inside diameter of the meter.