132 UMG70XV3-4EN 12.01.2009
14 Libraries
Medium Properties
14.3 Extended Library
14.3.1 Introduction
If the extended library is activated, material and medium properties as function of the
temperature or of the pressure and additional medium properties (heat flow coefficients,
steam coefficients and concentration coefficients) can be entered to the flowmeter direct-
ly or by means of the program FluxKoef.
For an overview of the material properties to be entered and of the measuring processes
they are needed for see Table 14.2.
Enter only the properties needed for the measuring task.
Enter the roughness of the material. Press ENTER.
For the typical roughness of some materials see annex C,
Table C.2.
Enter the min. and max. value of the sound velocity for the
medium in m/s. Press ENTER.
Enter the kinematic viscosity of the medium. Press EN-
TER.
Enter the density of the medium. Press ENTER.
Table 14.2: Material and medium properties that can be stored
property property is necessary for...
material property
transversal sound velocity flow measurement
longitudinal sound velocity flow measurement
type of sound wave flow measurement
typical roughness profile correction of the flow velocity
medium property
sound velocity start of measurement
viscosity profile correction of the flow velocity
density mass flow calculation
gas compressibility factor standard volume flow
additional properties of a medium
heat flow coefficients heat flow measurement
steam coefficients heat flow measurement with steam in supply line
concentration coefficients concentration measurement
kinem. Viscosity
1.01 mm2/ s
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