The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Flowrate Integration Errors of Multi-path Ultrasonic Flowmeter using Weighting Factors

가중계수에 의한 다회선 초음파유량계의 유량적분오차

  • 이호준 ((주)창민테크 부설연구소) ;
  • 황상윤 ((주)창민테크 부설연구소) ;
  • 김경진 ((주)창민테크 부설연구소)
  • Published : 2004.10.01
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Abstract

Multi-path ultrasonic flowrate measuring technology is being received much attentions from a variety of industrial fields to exactly measure the flowrate. Multi-path ultrasonic flowmeter has much advantage since it has no moving parts and little pressure loss. It offers good accuracy, repeatability, linearity and turn-down ratio can be over 1:50. The present study investigates flowrate integration errors using weighting factors. A theoretical flow model uses power law to describe a fully developed velocity profiles and wall roughness is changed. Gaussian, Chebyshev, and Tailor methods are used to integrate line-average velocities. The obtained results show that Chebyshev method in 2, 4-path arrangement and Gaussian method in 3, 5-path arrangement are not affected for wall roughness changes.

Keywords

References

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