Flexim FLUXUS F704**-A2 Series, User Manual

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FLUXUS F70x 9 Basic Measurement
92 UMFLUXUS_F7V4-6-2EN, 2017-10-01
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.
It can be specified which materials will be displayed in the scroll list (see section 13.5).
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.
9.1.4 Pipe Lining
It can be specified which materials will be displayed in the scroll list (see section 13.5).
If
Other Material is selected, the sound speed has to be entered.
For the sound speed of some materials see annex C.1.
9.1.5 Pipe Roughness
The flow profile of the medium is influenced by the roughness of the inner pipe wall. The roughness is used for the calcu-
lation of the profile correction factor. As, in most cases, the pipe roughness cannot be determined exactly, it has to be es-
timated.
For the roughness of some materials see annex C.2.
Select the pipe material.
If the medium 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 2500
m/s.
If the pipe has an inner lining, select
yes
. Press ENTER.
If
no
is selected, the next parameter will be displayed (see section 9.1.5).
Select the lining material.
If the material is not in the scroll list, select
Other Material
. Press ENTER.
Enter the sound speed of the lining material. Press ENTER.
Enter the thickness of the liner. Press ENTER.
Note! The inner pipe diameter (= outer pipe diameter - 2x pipe wall thickness - 2x liner thickness) is calcu-
lated 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 11.9).
Enter the roughness of the selected pipe or liner material.
Change the value according to the condition of the inner pipe wall. Press ENTER.
Pipe Material ↕
Carbon Steel
c-Material
3230.0 m/s
Lining
no
>YES<
Lining ↕
Bitumen
c-Material
3200.0 m/s
Liner Thickness
3.0 mm
Roughness
0.4 mm