VEGA VEGAPULS 56 Profibus PA - Manual (Page 67)

VEGAPULS 56 Profibus PA 67
Adjust-
ment
Para-
meter
Sensor
m(d)
4.700
w.o
medium
Ad-
just-
ment
in
m(d)
(min. adjustment)
OK
OK
+
OK
OK
OK
Ad-
just-
ment
in
m(d)
0.0%
at
m (d)
XX.XXX
OK
+ –
or
Max.
Min.
100 % (1.270 m) correspond
to 1200 liters
Span (4.58 m)
0 % (5.850 m) corresponds
to 45 liters
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
display of measured value (which can differ
several percent from the sounded value)
according to the sounding. From then on, the
sensor corrects running time shift of the ra-
dar 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.
Generally, it is useful to choose a slightly
wider range (approx. 5 %) for the operating
range than for the measuring range.
Example:
Min./max. adjustment: 1.270 … 5.850 m;
adjust operating range to approx. 1.000 …
6.000 m.
4. Adjustment
Setup
Under the menu item " Adjustment“ you inform
the sensor about the measuring range.
You can carry out the adjustment with or
without medium (dry adjustment). Generally
you will carry out the adjustment without me-
dium, as you can then adjust without a filling/
emptying cycle.
Adjustment without medium
(adjustment independent of the level)
Key adjustment Display indication
The distance indication flashes
and you can choose "feet“
and "m“.
Confirm the adjustment with
"
OK“.
With " +“ and "–“ you adjust the
percentage value for the min.
value (example 0.0 %).
The adjusted percentage
value is written in the sensor
and the distance for the min.
value corresponding to the
percentage value flashes.