VEGA VEGAFLEX 52P (Profibus PA) - Manual (Page 35)

VEGAFLEX 51P and 52P 35
Setup
2. Conditioning
Under the menu item " Conditioning" you
choose the distance at 0 % and at 100 %
filling. Then you enter the parameter and the
appropriate unit as well as the decimal point.
• Enter in the menu window " 0 % corre-
sponds" the value of the 0 % filling. This will
be e.g. "80" for 80 l.
• Confirm with " OK".
• With the arrow key you change to the
100 % menu. Enter here the value of your
parameter corresponding to a 100 % filling.
E.g. "1200" for 1200 l.
• Confirm with " OK".
• If necessary, choose a decimal point. Note
that max. 4 digits can be shown.
• In the menu " prop. to" you choose the pa-
rameter (mass, volume, distance…)
• In the menu " Unit" you choose the physical
unit (kg, l, ft 3 , gal, m 3 …).
• With the ESC key you change to the next
higher menu level. With the arrow key you
choose the next menu item.
• In the menu "Lin. curve" you can choose
between three standard linearisation
curves.
Preadjusted is a linear dependence be-
tween percentage value of the product
distance and the percentage value of the
filling volume.
You can choose between linear, spherical
tank and cylindrical tank. The adjustment of
a user-programmable curve is only possi-
ble with the PC and the adjustment pro-
gram VVO.
• In the menu item "Integration time" you can
adjust a delay for the signal output.
3. Outputs
Under the menu " Outputs" you can scale the
display and determine which parameter the
sensor display should show.
4. Operating range
Without special adjustment, the operating
range corresponds to the measuring range.
The measuring range was already adjusted
with the min./max. adjustment. It is usually
better to choose a slightly bigger operating
range (approx. 5 %) than the measuring
range (span).
Example:
Set min./max. adjustment: 0.300 … 5.850 m;
operating range to approx. 0.250 … real
cable length.
If you shorten the cable, you have to redefine
the cable length.
5. Meas. conditions
With these functions you can enter the ambi-
ent conditions in the vessel.
(see menu schematic)
6. Useful level and noise level
In the menu "Info" you get important informa-
tion on the signal quality of the product echo.
The higher the "
S-N" value, the more reliable
the measurement.
Ampl.: means amplitude of the product echo
in dB (useful echo)
S-N: means Signal-Noise (useful level
minus noise level)
The higher the S-N value (useful level minus
noise level), the higher the reliability:
> 50 dB
Measurement very good
40 … 50 dB Measurement good
20 … 40 dB Measurement satisfactory
15 … 20 dB Measurement sufficient
< 15 dB Measurement bad