VEGA VEGABAR 87 4 … 20 mA - Operating Instructions - Manual (Page 29)

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6 Set up with the display and adjustment module
VEGABAR 87 • 4 … 20 mA
45507-EN-131010
If with the automatic position correction, the actual measured value
should be taken over as corrective value, then this value must not be
influeces by product covering or a 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.
When the position correction was carried out, then the actual meas-
ured value is corrected to 0. The corrective value appears with inverse
signs 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 to 0 % and 100 % of
the output signal must be carried out (adjustment).
During adjustment, the pressure is entered e.g. for the level with full
and empty vessel, see following example:
Parameterization example