VEGA VEGABAR 87 4 … 20 mA - Operating Instructions - Manual (Page 31)

31
6 Set up with the display and adjustment module
VEGABAR 87 • 4 … 20 mA
45507-EN-131010
If the adjustment ranges are exceeded, then the entered value will not
be taken over. Editing can be interrupted with [ESC] or corrected to a
value within the adjustment ranges.
Proceed as follows:
1. Select with [->] the menu item max. adjustment and confirm with
[OK].
2. Edit the percentage value with [OK] and set the cursor to the
requested position with [->].
3. Set the requested percentage value (e.g. 90 %) with [+] and save
with [OK]. The cursor jumps now to the pressure value.
4. Enter the pressure value for the full vessel (e.g. 900 mbar) suit-
able for the percentage value.
5. Save settings with [OK]
The max. adjustment is finished.
For an adjustment with filling, simply enter the actual measured value
indicated at the bottom of the display.
If the adjustment ranges are exceeded, then the entered value will not
be taken over. Editing can be interrupted with [ESC] or corrected to a
value within the adjustment ranges.
To damp process-dependent measured value fluctuations, set an
integration time of 0 … 999 s in this menu item. The increment is 0.1 s.
Depending on the sensor type, the factory setting is 0.1 s.
A linearization is necessary for all vessels in which the vessel volume
does not increase linearly with the level - e.g. a horizontal cylindri-
cal or spherical tank - and the indication or output of the volume is
required. Corresponding linearization curves are preprogrammed for
these vessels. They represent the correlation between the level per-
centage and vessel volume. The linearization applies to the measured
value indication and the current output.
Caution:
Note the following, if the respective sensor is used as part of an over-
fill protection system according to WHG:
Setup - Max. adjustment
Level
Setup - Damping
Setup - Linearization