VEGA VEGABAR 87 Save sensor - Operating Instructions User Manual

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6 Set up with the display and adjustment module

VEGABAR 87 • Slave sensor for electronic differential pressure

45053-EN-131011

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 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).
With the application "Interface" the hydrostatic pressure at min. and

max. height of the interface is entered for adjustment. See the follow-

ing example:

100%

(78.74

0,8

1,0

Fig. 20: Parameter adjustment example "Min./max. adjustment, interface

measurement"
1 Min. interface = 0 % correspond to 0.0 mbar

2 Max. interface = 100 % correspond to 490.5 mbar

3 VEGABAR 87

4 VEGABAR 87 - Slave sensor

If these values are not known, an adjustment with interface layers of

for example 10 % and 90 % is also possible. By means of these set-

tings, the layer of the actual interface is then calculated.
The real product level during the adjustment is not important,

because the adjustment is always carried out without changing the

product level. These settings can be made ahead of time without the

instrument having to be installed.

Parameterization example