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  • American Institute of Physics (AIP)  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Characteristics of a thermal gas flowmeter (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 477-479 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The characteristics of a thermo tube type thermal gas flowmeter were analyzed and experimental results were described. The output of this flowmeter is temperature difference between two points along an electrically heated capillary. An analytical expression of its outputs was derived assuming a simple flow condition. An experimental prototype was constructed. The temperature distribution was measured and the outputs were obtained for three kinds of gases: nitrogen, carbon dioxide, and argon. Those outputs were compared with theoretical ones, and those agree well in the case of small flow rate. The relationship among temperature difference, mass flow rate, and specific heat of gas was discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139864
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A new pressure sensing method by use of magnetic fluid (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 3677-3680 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This article deals with a new pressure sensing method by use of magnetic fluids. In a magnetic fluid placed in a magnetic field, fluid-magnetic pressure appears, which is a function of magnetic field. When a differential pressure is applied to the ends of such a magnetic fluid plug, and the differential pressure is in equilibrium with the fluid-magnetic pressure so that the plug cannot move, then the magnitude of the magnetic field maintaining the fluid-magnetic pressure becomes a measure of the differential pressure. We made a small setup and measured differential pressures up to about 100 Pa by measuring the coil current of an electromagnet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143598
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    Paper (German National Licenses)
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