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ORIFICE PLATES WITH DRAIN HOLES

Dr Michael Reader-Harris, David Addison
  • Abstract:
    This paper presents new data and shows that the existing drain-hole equation in ISO/TR 15377 is unsatisfactory: it leads to flowrate errors up to nearly 2% in magnitude. The data on drain holes have a surprisingly strong dependence on the circumferential location of the pressure tappings. However, a new analysis takes this into account and has produced a formula for d’, the corrected orifice diameter taking account of the drain hole. It is very desirable to amend ISO/TR 15377:2007.
  • Keywords:
    orifice plates, drain holes, ISO/TR 15377
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  • DOI:
    _unreg_tc9-2013.088

Event details:

  • IMEKO TC:
    TC9
  • Event name:
    FLOMEKO 2013
  • Title:

    16th International Flow Measurement Conference

  • Place:
    Paris, FRANCE
  • Time:
    24 September 2013 - 26 September 2013