Vega VEGABAR 81 Modbus and Levelmaster protocol - Opera Bedienungsanleitung PDF herunterladen (Seite 31)

6 Set up with the display and adjustment module

VEGABAR 81 • Modbus and Levelmaster protocol

46293-EN-131107

Temperature unit:

Enter the requested parameters via the appropriate keys, save your

settings with [OK] and jump to the next menu item with the [ESC] and

the [->] key.

Especially with chemical seal systems, the installation position of the

instrumentcanshift(oset)themeasuredvalue.Positioncorrection

compensatesthisoset.Intheprocess,theactualmeasuredvalue

is taken over automatically. With relative pressure measuring cells a

manualosetcanalsobecarriedout.

If the actual measured value should be taken over as correction value

duringautomaticpositioncorrection,thisvaluemustnotbeinu-

enced by product coverage or 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.

After the position correction is carried out, the actual measured value

is corrected to 0. The corrective value appears with an inverse sign 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:

Setup - Position correc-

tion

Setup - Adjustment

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Vega VEGABAR 81 Modbus and Levelmaster protocol - Opera Bedienungsanleitung Seite 31