VEGA VEGABAR 81 HART and accumulator pack - Operating Instructions - Manual (Page 27)

27
6 Set up with the display and adjustment module
VEGABAR 81 • HART and accumulator pack
45026-EN-131107
If the actual measured value should be taken over as correction value
during automatic position correction, this value must not be influ-
enced by product coverage or static pressure.
With the manual position correction, the offset value can be deter-
mined by the user. Select for this purpose the function "Edit" and
enter the requested value.
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 81 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. 17: 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
Setup - Adjustment