Flexim FLUXUS G800, Руководство пользователя

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15 Libraries FLUXUS G80x
UMFLUXUS_G8V4-6-1EN, 2018-10-10 109
If, e.g., the temperature fluctuations at the measuring point are low compared to the temperature dependence of the mate-
rial properties, the linearization or the complete neglect of the temperature dependency will not result in a considerable ad-
ditional measuring error.
If, however, the process conditions fluctuate strongly and the fluid parameters depend strongly on the temperature (e.g.,
viscosity of hydraulic oil), polynomials or customized interpolation functions should be used. Contact FLEXIM to find the
best solution for the measuring task.
Customized Interpolation Functions
Some dependencies are only approximated insufficiently by polynomials. A number of customized interpolation functions
Basics: Y=F(X,Z)
are available to interpolate multidimensional dependencies
y = f(T, p)
. For further information
contact FLEXIM.
15.3.2 Activation of the Extended Library
15.3.3 Input of the Material/Fluid Parameters
The parameter of a user defined material/fluid can be entered now.
The input of a material or a fluid is almost identical. Therefore, the displays for a fluid will only be shown and described in
case of differences.
Select
Special Funct.\SYSTEM settings\Libraries\Extended Library
.
Press ENTER.
Select
on
to activate the extended library. Press ENTER.
Select
Special Funct.\Install Material
or
Install Medium
. Press ENTER.
This error message will be displayed if the coefficient memory does not contain an area for
user defined materials/fluids.
Partition the coefficient memory accordingly (see section 15.1).
Select the function for the temperature or pressure dependence of the material/fluid prop-
erties:
Y=CONST.
: constants
Y=M*X+N
: linear function of the temperature
Y=Polynom:
y = k
0
+ k
1
· x + k
2
· x
2
+ k
3
· x
3
+ k
4
· x
4
Y=F(X,Z):
customized interpolation function (only for experienced users or after consul-
tation with FLEXIM)
go back:
return to the previous menu item
Select a user defined material/fluid.
Select
edit
to edit the material/fluid parameters or
delete
to delete the material/fluid
and to return to the scroll list
Edit Material
or
Edit Medium
.
This display will only be indicated if an already existing material/fluid has been selected.
Enter the designation of the material/fluid. Press ENTER.
The default name for a user defined material/fluid is
USER Material N
or
USER Medium
N
with
N
being an integer.
Extended Library
off
>ON<
Special Funct. ↕
Install Material
USER Material
NOT FORMATTED !
Edit Material ↕
Basics:Y=m*X +n
USER Material ↕
#01:--not used--
USER Material 2
>EDIT< delete
#2: Input Name:
USER Material
2