Differential pressure flowmeter

• Supported flow elements:

Orifices
Nozzles
Venturi
Averaging pitot tubes
Wedge flow meter 
Cone meter 
Integral flow orifice assembly
Manufacturer dependent special designs 

• Supported calculation bases:

ISO 5167-1 (2022, 2003, 1998, 1995) 
ISO 5167-2 (2022, 2003) 
ISO 5167-3 (2022, 2020, 2003) 
ISO 5167-4 (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)
GOST 8.586 (2005) 
GB/T 2624 (2006) 
DIN 1952 (1980)
VDI/VDE 2041 (1991)
R. W. Miller, Flow Measurement Engineering Handbook (1996)

• Clear summary of all limitations of use
• Stress calculation for orifices according to ISO/TR 9464,  ASME B31.3,  ISO 5167 etc. 
• Sound prediction for orifices based on IEC 60534-8-3 or IEC 60534-8-4 
• Clear layout of the required inlet and outlet sections
• Extended measurement uncertainty calculation according to ISO 5168 with sensitivity coefficients 
• Calculation of rectangular Venturi nozzles
• Calculation of devices with drain holes
• Calculations of pitot tubes with selection from an extensible equipment database
• Calculations of non-standard differential pressure transmitters
• Calculations for wet gas (gas with liquid content) with orifice plates, Venturi tubes, and cone meters 
• Calculations for humid gases (gas with water vapor content)
• Input option for carrier rings for orifice plates with corner pressure tapping

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 according to ASME B31.3, 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) 
• Sound prediction for orifices  based on IEC 60534-8-3 or IEC 60534-8-4
• Orifice plates with drain holes can be calculated.
• The range of validity had been enhanced to β > 0,75.