Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung PDF herunterladen (Seite 35)

7 Set up with the display and adjustment module

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

43387-EN-131119

Select "Linearization - New"toentertherstpoint.

Select "Determine count rate"toentertherstpoint.

The determination of the actual count rate lasts 2 minutes. After the

count rate has been determined, you can accept the value (ct/s).

The count rate is stated in ct/s. This is the number of counts per sec-

ond, i.e. the measured radioactive radiation dose actually reaching

the sensor.

Enter now the corresponding level (m).

By doing so, you assign a respective level to the actual count rate.

Accept the value pair with "OK".

Depending if you have started with full or empty vessel, you have to

continueemptyingorllingthevessel.

Alsocarryoutsuchalinearizationwithseveraldierentllingheights

if you have a linear vessel.

Bydoingso,youcaninuencethemeasurementreliabilityofthe

sensor. The more linearization points you enter and the bigger the

dierencebetweentherstandthelastlinearizationpoint,themore

reliable the measurement will be.

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

out this adjustment with as many points as possible.

A maximum of 32 linearisation points is possible.

Note:

Ifyoucannotllthevesselduringtheadjustmentproceduretoatleast

60 % of the max. level, it is possible to carry out the full adjustment

byswitchingotheradiation.Theswitched-oradiationsimulatesa

100%lling.

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Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung Seite 35