VEGA VEGABAR 81 4 … 20 mA_HART - Operating Instructions User Manual

Page 36

6 Set up with the display and adjustment module

VEGABAR 81 • 4 … 20 mA/HART

45018-EN-131010

If you have connected no slave sensor, you confirm this with "Deac-

tivate".
VEGABAR 81 can be used for process pressure and level measure-

ment. Default setting is process pressure measurement. The mode

can be changed in this adjustment menu.
The VEGABAR 81 in conjunction with a slave sensor can be used for

flow, differential pressure, density and interface measurement. The

default setting is differential pressure measurement. Switchover is

carried out in the adjustment menu.
Depending on the selected application, different subchapters in the

following adjustment steps are important. There you can find the

individual adjustment steps.

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.

In this menu item, the adjustment units of the instrument are deter-

mined. The selection determines the displayed unit in the menu items

"Min. adjustment (zero)" and "Max. adjustment (span)".
Unit of measurement:

If the level should be adjusted in a height unit, the density of the me-

dium must also be entered later during the adjustment.
In addition, the temperature unit of the instrument is specified. The se-

lection determines the displayed unit in the menu items "Peak value,

measuring cell temperature", "Peak value, electronics temperature"

as well as "HART variables".
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 (offset) the measured value. The position cor-

rection compensates this offset. Hence the actual measured value is

taken over automatically. With relative pressure measuring cells also a

manual offset can be carried out.

Setup - Units

Setup - Position correc-

tion