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압력 용기 수위 측정 오차 개선에 관한 연구

A Study on Accuracy Improvement in Measuring Liquid Level inside Pressurized Vessels

  • 김호열 (한국전력공사 전력연구원) ;
  • 변승현 (한국전력공사 전력연구원)
  • 투고 : 2010.05.13
  • 심사 : 2010.09.13
  • 발행 : 2010.10.01

초록

Differential pressure type level measuring systems have been using widely for industrial applications like drum level measurements in power plants. Because of difficulties in specific gravity compensation for vapor and liquid inside the vessel and the sensing lines, this type of measuring systems reveal significant measuring error. In this paper, the major reason causing errors on the differential pressure type level measurement is analyzed and a method of more accurate calculation for specific gravity compensation is introduced.

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참고문헌

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  3. John E. Hewson, "Process Instrumentation Manifolds", Instrument Society of America, pp. 174-178, 1981
  4. Sam G. Dukelow, "The Control of Boilers" 2nd Edition, Instrument Society of America, pp. 190-191, 1991