VEGA VEGABAR 83 4 … 20 mA - Operating Instructions - Manual (Page 31)

31
6 Set up with the display and adjustment module
VEGABAR 83 • 4 … 20 mA
45033-EN-131010
VEGABAR 83 always measures pressure independently of the pro-
cess variable selected in the menu item "Application". To output the
selected process variable correctly, an allocation to 0 % and 100 % of
the output signal must be carried out (adjustment).
With the application "Level", the hydrostatic pressure, e.g. with full
and empty vessel, is entered for adjustment. See following example:
2
1
100%
0%
5
m
(196.
9")
Fig. 25: Parameter adjustment example "Min./max. adjustment, level measure-
ment"
1 Min. level = 0 % corresponds to 0.0 mbar
2 Max. level = 100 % corresponds to 490.5 mbar
If these values are not known, an adjustment with levels of for exam-
ple 10 % and 90 % is also possible. By means of these settings, the
real filling height is then calculated.
The real product level during this adjustment is not important, be-
cause the min./max. adjustment is always carried out without chang-
ing 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.
For the other process variables such as e.g. process pressure, differ-
ential pressure or flow, the adjustment is performed in like manner.
Proceed as follows:
1. Select the menu item "Setup" with [->] and confirm with [OK].
Now select with [->] the menu item "zero adjustment" and confirm
with [OK].
2. Edit the mbar value with [OK] and set the cursor to the requested
position with [->].
Setup - Adjustment
Setup - zero adjustment