Vega VEGAMET 861 - Page 50

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11 Applications and functions
VEGAMET 861 • 4 … 20 mA/HART
58866-EN-200401
The following steps must be carried out in the application wizard:
1. Select application
Selectfromtheoeredoptionstheapplication"Flow measure-
mentume/Weir".
2. Assign measuring loop name
Assign a unique designation to the measuring point so that there
can be no confusion with other measuring points.
3. Select sensor input (only for devices with HART)
Denehowthemeasuredvalueshouldbetransmitted
(4 … 20 mA or HART). If HART is available for the sensor as well
as for the controller, the HART selection should be used because
a higher accuracy can be achieved.
4. Denesensorcharacteristicvalues
When using analogue 4 … 20 mA sensors, the measuring range
should be set accordingly in the sensor to achieve maximum ac-
curacy. This measuring range must also be stored in the assistant
together with the sensor type and the measuring unit.
5. Deneapplication
Selecttheappropriatelinearizationandumetype.Alistofavail-
ableumescanbefoundintheintroductiontothisapplication.
6. Deneadjustmentvalues
Enter the adjustment values of the measuring point for 0 % and
for 100 %.
7. Scaling
Enterthemeasuredvalueandunit(e.g.owrateinm³/h)andthe
correspondingscalingvaluesfor100%and0%(e.g.100m³/h,
0m³/h).
8. Activate/denetotalizer
Theowvaluecanalsobesummedupanddisplayedasow
rate. Two independent totalizers are available for this purpose.
Denethemeasuringunitandthedisplayformat.Inaddition,a
valueforleakowvolumesuppressioncanbedened.