Flexim FLUXUS G704, User Manual, Page: 133 / 257

UMG70XV3-4EN 12.01.2009 133
14 Libraries
The dependency of certain material 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
Constants or a linear function are sufficient in most cases.
If e.g. the temperature fluctuations at the measuring point are low compared to the tem-
perature dependency of the material properties, the linearization or the complete neglect
of the temperature dependency will not result in a considerable additional measuring er-
ror.
If, however, the process conditions fluctuate strongly and the medium properties depend
strongly on the temperature (e.g. viscosity of hydraulic oil), polynomials or customized in-
terpolation functions should be used. Contact FLEXIM to find the best solution for the
measuring task.
Customized Interpolation Functions
Some dependencies are approximated insufficiently by polynomials. A few customized
interpolation functions
BASICS: Y=F(X,Z)
are available to interpolate multidimensional
dependencies y = f(T, p). Contact FLEXIM for more information.
14.3.2 Activation of the Extended Library
14.3.3 Input of Material/Medium Properties
The properties of a user defined material/medium can be entered now.
The steps to input a material or a medium are almost identical. Thus, displays for a medi-
um will be shown and described only in case of differences.
Select
SPECIAL FUNCTION\SYSTEM SETTINGS\ LIB-
RARIES\EXTENDED LIBRARY
. Press ENTER.
Select
ON
to activate the extended library. Press ENTER.
Select
SPECIAL FUNCTION\INSTALL MATERIAL
or
INSTALL MEDIUM
. Press ENTER.
An error message will be displayed if the coefficient mem-
ory does not contain space for user defined materials/me-
dia.
Partition the coefficient memory (see section 14.1).
Extended Library
off >ON<
Special Function

Install Material
USER MATERIAL
NOT FORMATTED !