Smart Fluidic Meters for Simultaneous Measurement of Fluid Flowrate, Reynolds Number, Density and Viscosity

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The potential of simple fluidic circuits, based on oscillators and laminar resistance, for the smart metering of fluids is examined. If fluid properties are unknown a single fluidic oscillator is only capable of volumetric metering if it has a constant Strouhal number, which is often not the case. With known viscosity, flowrate and density can be determined by measuring both frequency and the pressure drop across a meter with variable Strouhal number. A fluidic oscillator in parallel with a laminar resistance is known to have a significantly extended flow range, but it is shown to be unable to measure flowrate, density and viscosity. This is, however, achieved by placing a further oscillator in series, forming a two meter by-pass system. This is shown to have potential both as a Reynolds number meter, by measuring two frequencies, or with the additional measurement of a pressure drop, as a smart system simultaneously measuring flowrate, density and viscosity. Two target type fluidic oscillators and a laminar resistance are built and calibrated experimentally using air. These are then combined to form a two meter by-pass system which is again tested with air. The tests confirm the operation of the system both as a <I>Re</I> meter and for simultaneous measurement of flowrate and gas properties. The options in designing the system including component matching are briefly discussed and the potential of the technology for application at the micro-scale is highlighted.</B>

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 39(4), 383-393, 2006-04-01 

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10018112451
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    7884248
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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