VEGA VEGABAR 55 4 … 20 mA User Manual

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6 Set up with the display and adjustment module PLICSCOM

VEGABAR 55 • 4 … 20 mA

36733-EN-130321

Proceed as follows:
1. Edit the mbar value in the menu item "span" with [OK].

Span
100.0 %

=
+1000.0 mbar

0000.0 mbar

Information:

The displayed pressure for 100 % corresponds to the nominal meas-

uring range of the sensor (in the above example 1 bar = 1000 mbar).
2. Set the requested mbar value with [->] and [OK].
3. Confirm with [OK] and move to the menu overview with [ESC].
The span adjustment is finished.
Information:

For an adjustment with pressure, simply enter the actual measured

value indicated at the bottom of the display.
If the adjustment ranges are exceeded, the message "Outside param-

eter limits" appears. The editing procedure can be aborted with [ESC]

or the displayed limit value can be accepted with [OK].

A linearisation is necessary for all vessels in which the vessel volume

does not increase linearly with the level - e.g. in a horizontal cylindri-

cal or spherical tank - and the indication or output of the volume is

required. Corresponding linearisation curves are preprogrammed for

these vessels. They represent the correlation between the level per-

centage and vessel volume. By activating the appropriate curve, the

volume percentage of the vessel is displayed correctly. If the volume

should not be displayed in percent but e.g. in l or kg, a scaling can be

also set in the menu item "Display".

Linearization curve

Linear

Enter the requested parameters via the appropriate keys, save your

settings and jump to the next menu item with the [->] key.
Caution:

Note the following if the VEGABAR 55 with corresponding approval is

used as part of an overfill protection system according to WHG (Water

Resources Act):
If a linearization curve is selected, the measuring signal is no longer

linearly proportional to the level. This must be taken into consideration

by the user, particularly when setting the switching point on the limit

signal indicator.

This function enables reading out parameter adjustment data as well

as writing parameter adjustment data into the sensor via the display

and adjustment module. A description of the function is available in

the operating instructions manual "Display and adjustment module".

Carry out span adjust-

ment

Linearization curve

Copy sensor data