Vega VEGABAR 81 4 … 20 mA_HART - Operating Instructions Bedienungsanleitung PDF herunterladen (Seite 37)

6 Set up with the display and adjustment module

VEGABAR 81 • 4 … 20 mA/HART

45018-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

inuecesbyproductcoveringorastaticpressure.

Withthemanualpositioncorrection,theoset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oset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:

100%

5 m

(196.9

Fig. 36: 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

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Vega VEGABAR 81 4 … 20 mA_HART - Operating Instructions Bedienungsanleitung Seite 37