Vega VEGABAR 87 Operating Instructions Manual page 35

Parameterization example
VEGABAR 87 • 4 ... 20 mA/HART
Save your settings with [OK] and move with [ESC] and [->] to the
next menu item.
After the position correction is carried out, the actual measured value
is corrected to 0. The corrective value appears with an inverse sign as
offset value in the display.
The position correction can be repeated as often as necessary. How-
ever, if the sum of the corrective values exceeds 20 % of the nominal
measuring range, then no position correction is possible.
VEGABAR 87 always measures pressure independently of the pro-
cess variable selected in the menu item " Application". To output the
selected process variable correctly, an allocation of the output signal
to 0 % and 100 % must be carried out (adjustment).
During adjustment, the pressure is entered e.g. for the level with full
and empty vessel, see following example:
Fig. 31: Parameter adjustment example Min./max. adjustment, level measure-
ment
1 Min. level = 0 % corresponds to 0.0 mbar
2 Max. level = 100 % corresponds to 196.2 mbar
If these values are not known, an adjustment with filling levels of e.g.
10 % and 90 % is also possible. By means of these settings, the real
filling height is then calculated.
The actual product level during the adjustment is not important,
because the min./max. adjustment is always carried out without
changing the product level. These settings can be made ahead of
time without the instrument having to be installed.
Note:
If the adjustment ranges are exceeded, the entered value will not be
accepted. Editing can be interrupted with [ESC] or corrected to a
value within the adjustment ranges.
6 Set up with the display and adjustment module
2
100%
1
0%
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