The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Deviation Characteristics of Clamp-on Type Ultrasonic Flowmeter Installed in Downstream of Valves

밸브 하류에 설치된 건식 초음파유량계의 편차특성

  • 이동근 (한국수자원공사 K-water연구원) ;
  • 조용 (한국수자원공사 K-water연구원)
  • Received : 2012.03.20
  • Accepted : 2012.05.24
  • Published : 2012.08.01
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Abstract

This study was performed to found out the deviations for clamp-on type ultrasonic flowmeter installed in downstream of valves. It was selected three types of two-path flowmeter mainly used for K-water as test. Experiment carried out to confirmed characteristics of deviation depending on the sensor location, straight pipe length and maker for 1-path, 2-path and 4-path combined 2-path flowmeter. It was selected two kinds of valves with 100 % and 50 % opening, butterfly valves and gate valves, for flow disturbance factor. Finally, we suggested number of sensors by maker, straight pipe length and installed location of sensors satisfying the tolerance depending on the experiment results.

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References

  1. Hwang, S. Y., Seo, J. S. and Park, J. K., 2007, "Uncertainty Evaluation of Ultrasonic Flowmeter Varied with Temperature and New Improvement Method," Proceeding of the KFMA Annual Meeting, pp. 503-508.
  2. Som, J. N., 1994, "Study on the Calibration of the Transit-time Ultrasonic Flowmeter," Journal of Pure and Applied Ultrasonics, Vol. 17, No. 4, pp. 114-120.
  3. KS B ISO/TR 12765, 2005, "Measurement of Fluid Flow in Closed Conduits-Methods Using Transit-time Ultrasonic Flowmeters."
  4. 환경부, 2007, "유량계 설치 및 유지관리 지침."
  5. JEMIS-032, 1987, "Method of Flow Measurement by Ultrasonic Flowmeters."
  6. 한국표준과학연구원, 1991, "형식별 유량계 설치조건에 따른 특성분석 연구(I, II)."
  7. 한국수자원공사, 2005, "유량계 형식별 오차특성조사를 통한 현장적용 연구."
  8. Lee, D. K. and Cho, Y., 2011, "Error Characteristics of Clamp-on Ultrasonic Flowmeters Depending on Location of Sensors and Downstream Straight Run of Bent Pipe," Journal of KSME(B), Vol. 35, No. 8, pp. 861-868.
  9. Lee, D. K and Park, J. H., 2008, "Uncertainty Characteristics of Diverter for Flowmeter Calibration System," Journal of Fluid Machinery, KFMA, Vol. 11, No. 3, pp. 50-55. https://doi.org/10.5293/KFMA.2008.11.3.050
  10. ISO 4185, 1985, "Measurement of Liquid Flow in Closed Conduits-Weighing Methods."

Cited by

  1. Numerical study of upstream disturbances on the performance of electromagnetic and ultrasonic flowmeters vol.77, pp.4, 2012, https://doi.org/10.1590/1678-992x-2018-0208