Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung PDF herunterladen (Seite 52)

7 Set up with the display and adjustment module

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

43387-EN-131119

the adjustment of the sensor with full status (covered) and with empty

status (uncovered).

Hence, you will get a very reliable switching point.

Withsinglepointadjustment,youhavetodenethedierence

between the min. and max. adjustment points (Delta I) yourself during

the following setup.

This menu item appears only if you have selected "Single point

adjustment" as adjustment mode (Setup/Adjustment mode).

In this menu item you determine the point at which the SOLITRAC 31

should switch in uncovered status.

Empty the vessel until the sensor is uncovered.

For this enter the requested pulse rate manually or let the rate be

determined by SOLITRAC 31. Automatic determination of the pulse

rate should be given preference.

The pulse rate is entered in ct/s. This is the number of counts per

second, i.e. the measured gamma radiation reaching the sensor.

Prerequisites:

•

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

•

There is no medium between source container and sensor

You can enter the value for "Adjustment uncovered" (ct/s) manually.

You can have the value for "Adjustment uncovered" determined by

SOLITRAC 31.

This menu item appears only if you have selected "Single point

adjustment" as adjustment mode (Setup/Adjustment mode).

In this menu item you can adjust at which percentage value of the

max. pulse rate the sensor should switch over.

Since in most cases the radiation is almost completely absorbed

when the sensor is covered, the pulse rate when the sensor is cov-

ered is very low.

Setup/Adjustment

uncovered (single point

adjustment)

Setup/Delta I (single

point adjustment)

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Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung Seite 52