Differential pressure flowmeter

• Design for up to three operating points
• Clear arrangement of the required inlet and outlet sections
• Extended measurement uncertainty calculation according to ISO 5168 sensitivity coefficients 
• Clear summary of all limitations of use
• Calculation of segmental orifices with carrier rings 
• Calculation of devices with drain holes
• Calculations of pitot tubes with selection from an extensible equipment database
• Calculations for non-standard flowmeters
• Stress calculation for orifices (ASME 31.3/AD 2000/ISO 5167 etc.)
• Calculation for humid gases with input of relative, specific, or absolute humidity
  Calculation for wet gas streams (vapor or gas with liquid content)

Supported flow elements:

• Orifices
• Nozzles
• Venturi nozzles (also for critical flow)
• Venturi tubes (also rectangular)
• Averaging pitot tubes
• Wedge flow meter 
• Cone meter 
• Integral flow orifice assembly
• Manufacturer dependent special designs 

Supported calculation bases:

• DIN 1952 (1980)
• ISO 5167-1 (2022, 2003, 1998, 1995)
• ISO 5167-2 (2022, 2003)
• ISO 5167-3 (2022, 2020, 2003)
• ISO 51674 (2022, 2003)
• ISO 5167-5 (2022, 2016)
• ISO 5167-6 (2022, 2019)
• ISO 5168 (2005)
• ISO/TR 9464 (2008)
• ISO/TR 11583 (2012)
• ISO/TR 12748 (2015)
• ISO/TR 15377 (2018, 2007)
• ISO 9300 (2022, 2005)
• ASME MFC-3M-2004 (R2017)
• ASME MFC-7 (2016, 1987-R2014)
• ASME MFC-14M (2003)
• ASME PTC 6 (2004)
• ASME PTC 19.5 (2004)
• AGA 3 / API MPMS 14.3 (2013, 2003)
• GB/T 2624 (2006)
• GOST 8.586 (2005)
• VDI/VDE 2041 (1991)
• R. W. Miller, Flow Measurement Engineering Handbook (1996)

Restriction orifice plates

• Calculation of the internal diameter, differential pressure, volumetric flow and mass flow rate
• Support for single- and multi-hole orifices 
• Calculation of multi-stage expansion (automatic and manual) 
• 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.