EXPERIMENTAL STUDY OF THE FACTORS EFFECT ON THE S TYPE PITOT TUBE COEFFICIENT

Nguyen Doan Trang, Woong Kang, Jae Sig Shim, Hee Soo Jang, Seung Nam Park, Yong Moon Choi

Abstract

For the measurement of velocity of gas streams in ducts, the S pitot tube is one of the most widely used velocity measurement devices. Factors as Reynolds number and misalignment can be additional error sources for the S pitot coefficient. The variation of S pitot coefficient is observed on five different manufactures of S pitot through the airs peed standard system. The results of these experiments indicate that the coefficient curve of S pitot tube is fluctuated at small velocities around 0.2 % up to 0.7 %. The coefficient value of S pitot tube has a band from 2 % to 4 %

Keywords

S pitot tube, misalignment, yaw and pitch angle, coefficient

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IMEKO-WC-2012-TC9-O5.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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