Differential pressure flowmeter

  • Supported flow elements:
    • Orifices
    • Nozzles
    • Venturi
    • Averaging pitot tubes
    • Cone meter
    • Wedge flow meter
    • Integral flow orifice assembly
    • Manufacturer dependent special designs
  • Supported calculation bases:
    • ISO 5167 (2003, 1998, 1995, 1980)
    • ISO 5167-5 (2016)
    • ISO/TR 15377 (2007)
    • ISO 9300 (2005)
    • ASME MFC-3Ma (2007)
    • ASME MFC-7M-1987 (R2014)
    • ASME PTC 6 (2004)
    • ASME PTC 19.5 (2004)
    • AGA 3 / API MPMS 14.3 (2013)
    • VDI/VDE 2041 (1991)
    • R. W. Miller, Flow Measurement Engineering Handbook (1996)
  • Clear summary of all limitations of use
  • Stress calculation for orifices (ASME 31.3/AD 2000/ISO 5167 etc.)
  • Clear arrangement of the required inlet and outlet sections
  • Calculation of measurement uncertainties
  • Calculation of segmental orifices with carrier rings
  • Calculation of rectangular Venturi nozzles
  • Calculation of devices with drain holes
  • Calculations of pitot tubes with selection from an extensible equipment database
  • Calculations also for humid gases and non-standard differential pressure transmitters

Restriction orifice plates

  • Calculation of the internal diameter, differential pressure, volumetric flow and mass flow rate
  • Support for multi-hole orifices
  • Improved calculation method considering the length of the cylindrical orifice
  • Improved stress calculation (ASME 31,3/AD 2000/ISO 5167 etc.)
  • Revised forecast of choked-flow conditions
  • Calculation of the Vena Contracta and outlet conditions 
  • Support of liquids containing dissolved gas
  • Calculation of the energy balance (power loss) and the sound pressure level
  • Enhanced noise prediction for restriction orifice plates by the adapted calculation according to IEC 60534-8-3 respectively IEC 60534-8-4.
  • Orifice plates with drain holes can be calculated.
  • The range of validity had been enhanced to β > 0,75.