• Title/Summary/Keyword: magnetic float type level gauge

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Optimal design of dual magnetic float type level gauge to detect a specific level (특정 레벨을 검출하기 위한 2단 Magnetic Float 타입 레벨 게이지의 최적 설계에 관한 연구)

  • Kim, Dong-Sok;Han, Jae-Man;Park, Gwan-Soo
    • Journal of Sensor Science and Technology
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    • v.17 no.4
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    • pp.308-316
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    • 2008
  • For the measurement of liquid level in ship's cargo tank, ballast tank, fuel oil tank and fresh water tank, several types of gauge meter are used such as tubular type, magnetic float type, reflex type transparent type and welding pad type. Among them, magnetic float type gauge meter is environmental friendly device because it is free of power source and maintenance. The main obstacle of the device is relatively large error bound. In this paper, finite element method is used to design and analysis of the magnetic float type gauge meter. The operation of reed switch according to the magnetic field has been successfully described and agreed well with experimental measurement. The optimum geometry with combination of permanent magnet and reed switches are designed to achieve 98 % accuracy of fluid level.