116 UMFLUXUS_G6V4-2EN, 2011-03-29
FLUXUS G60x 16 Libraries
Medium properties
16.3 Extended Library
16.3.1 Introduction
If the extended library is activated, it is possible to enter material and medium properties
as a function of the temperature or of the pressure. These data can be entered into the
transmitter directly or by means of the program FluxKoef.
Enter only the properties needed for the measuring task.
The dependency of the material/medium properties from the temperature and pressure
can be described
• as constants
• as linear function
• with polynomials of grade 1 to 4
• with customized interpolation functions
In most cases, constants or a linear function are sufficient.
Enter the min. and max. sound speed of the medium.
Press ENTER.
Enter the kinematic viscosity of the medium. Press EN-
TER.
Enter the density of the medium. Press ENTER.
Tab. 16.2: Material and medium properties that can be stored
property property is necessary for...
material property
transversal sound speed flow measurement
longitudinal sound speed flow measurement, wall thickness measurement
(G601)
type of sound wave flow measurement
typical roughness profile correction of the flow velocity
medium property
sound speed start of measurement
viscosity profile correction of the flow velocity
density calculation of mass flow rate
gas compressibility factor standard volumetric flow rate
Kinem.Viscosity
1.01 mm2/s
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