Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung PDF herunterladen (Seite 34)

7 Set up with the display and adjustment module

SOLITRAC 31 • 4 … 20 mA/HART - four-wire

43387-EN-131119

Enter in the menu window "Max. process value" the max. level (full),

for example in "m". This corresponds to an output current of 20 mA.

Enter in the menu window "Min. process value" the min. level (empty),

for example in "m". This corresponds to an output current of 4 mA.

In this menu item you can carry out the adjustment of the sensor.

Caution:

Duringtherstsetuporafteraninstrumentreset,thelinearisation

stands at the preset value pair (90000 ct/s ≙ 0 % and 0 ct/s ≙ 100 %).

These values are not suitable for your application and must be re-

placed by real values. Delete this value pair in the following procedure

and carry out the linearisation.

Due to the measuring principle, there is no linear relationship between

pulse rate and level. Hence, this adjustment (i.e. linearisation) must in

any case be carried out.

If you have a non-linear vessel (e.g. spherical tank), you have to carry

out this adjustment with as many points as possible.

Note:

Ifyoucannotllthevesselwiththeoriginalmedium,itisalsopossible

to carry out the adjustment with water.

Prerequisites:

Radiation is switched on - Source container is set to "ON"

Thevesseliseithercompletelylled(100%)orcompletelyemptied

(0 %).

Dependingonthefactifthevesselislledoremptied,youcancar-

riedoutrstthefullortheemptyadjustment.TheSOLITRAC31sorts

the points automatically according to their level.

Select "Show table" to display and edit the linearization points.

Setup/Linearisation

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Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung Seite 34