VEGA VEGAPULS 51K…54K Profibus PA - Manual (Page 39)

VEGAPULS 51P … 54P 39
24890-EN-041227
Set-up
Adjust-
ment
Para-
meter
Sensor
m(d)
4.700
w.o
medium
Ad-
just-
ment
in
m(d)
(min. adjustment)
OK
OK
OK
OK
4. Adjustment
Under the menu item " Adjustment“ you inform
the sensor of the measuring range it should
operate in.
You can carry out the adjustment with or
without medium. Generally, you will carry out
the adjustment without medium, as you can
then adjust without a filling/emptying cycle.
Adjustment without medium
(adjustment independent of the level)
Key adjustment Display indication
Max.
Min.
100 % (1.270 m) correspond
to 1200 liters
Span (4.58 m)
0 % (5.850 m) corresponds
to 45 liters
Adjustment steps
On the following pages you will find the com-
plete menu schematic of the adjustment mod-
ule MINICOM. Set up the sensor in the
numbered sequence:
1. Address
2. Measuring tube adjustments (only for
measurement in a standpipe)
3. Operating range
4. Adjustment
5. Conditioning
6. Meas. conditions
7. False echo storage (only required when
errors occur during operation)
8. Indication of the useful and noise level
9. Outputs
Short explanations to the setup steps 1 … 9
follow.
1. Address
Choose a free bus address with the DIP
switch (see chapter „3.2 Sensor address“).
2. Measurement in a standpipe
Adjustment is only necessary if the sensor is
mounted in a standpipe (surge or bypass
tube). When measuring in a standpipe, do a
sounding of the distance and correct the
measured value display (which can differ
several percent from the sounded value)
according to the sounding. From then on, the
sensor corrects the running time shift of the
radar signal and displays the correct value of
the level in the standpipe (measuring tube).
3. Operating range
Without special adjustment, the operating
range corresponds to the measuring range.
It is generally advantageous to set the oper-
ating range slightly larger (approx. 5 %) than
the measuring range.
Example:
Min./max. adjustment: 1.270 … 5.850 m;
adjust operating range to approx.
1.000 … 6.000 m.