Flexim FLUXUS WD100, User Manual

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FLUXUS WD100, WD200 9 Basic Measurement
44 UMFLUXUS_F5WDV1-1EN, 2016-04-08
9 Basic Measurement
The pipe and fluid parameters are entered for the selected measuring point (see chapter 5). The parameter ranges are
limited by the technical characteristics of the transducers and of the transmitter.
9.1 Input of the Pipe Parameters
9.1.1 Outer Pipe Diameter/Pipe Circumference
It is possible to enter the pipe circumference instead of the outer pipe diameter (see section 13.2.1).
If the input of the pipe circumference has been activated and
0
(zero) is entered for the
Outer Diameter
, the menu item
Pipe Circumfer.
will be displayed. If the pipe circumference is not to be entered, press key BRK to return to the main
menu and start the parameter input again.
9.1.2 Pipe Wall Thickness
9.1.3 Pipe Material
The pipe material has to be selected to be able to determine the sound speed. The sound speed for the materials in the
scroll list are stored in the transmitter.
When the pipe material has been selected, the corresponding sound speed is set automatically. If
Other Material
has
been selected, the sound speed has to be entered.
For the sound speed of some materials see annex C.1.
Note! During the parameter input, the transducers have to be connected to the transmitter.
Note! The parameters will only be stored when the program branch
Parameter
has been edited in its en-
tirety.
Select the program branch
Parameter
. Press ENTER.
Enter the outer pipe diameter. Press ENTER.
An error message will be displayed if the entered parameter is outside of the range. The
limit will be displayed.
Example: upper limit 1100 mm for the connected transducers and for a pipe wall thickness
of 50 mm.
Enter the pipe wall thickness. Press ENTER.
Note! The inner pipe diameter (= outer pipe diameter - 2x pipe wall thickness) is calculated internally. If the
value is not within the inner pipe diameter range of the connected transducers, an error message will
be displayed.
It is possible to change the lower limit of the inner pipe diameter for a given transducer type (see sec-
tion 11.7).
Select the pipe material.
If the fluid is not in the scroll list, select
Other Material
. Press ENTER.
Enter the sound speed of the pipe material. Press ENTER.
Note! Enter the sound speed of the material (i.e. longitudinal or transversal speed) which is nearer to
2 500 m/s.
>PAR< mea opt sf
Parameter
Outer Diameter
100.0 mm
Outer Diameter
1100.0
MAXIMAL
Wall Thickness
3.0 mm
Pipe Material ↕
Carbon Steel
c-Material
3230.0 m/s