VEGA VEGAFLEX 82 4 … 20 mA_HART two-wire - Manual (Page 56)

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7 Setup with PACTware
VEGAFLEX 82 • 4 … 20 mA/HART two-wire
41829-EN-130612
Application
In this field you can select the application you want to use your instru-
ment for. You have the following selection options:
•
Level in the metallic vessel
•
Level in the non-metallic vessel
•
Demonstration mode
Level measurement: If you select "Level", you can select the proper-
ties of the medium in another field.
Demonstration mode: This mode is only suitable for test and demon-
stration purposes. In this mode, the sensor ignores all parameters
and reacts immediately to all measured value changes within the
measuring range.
Application - Level measurement
The level measurement refers to the product surface which is the limit
to the gas phase.
•
With bulk solids:
– Dusts, wood chips - dielectric constant < 1.5
– Granules, dusts, powders - dielectric constant 1.5 … 3
– Cereals, flour - dielectric constant > 3
Adjustment for the level measurement
If you have selected level measurement in the previous menu, then
you can enter the values for the min. and max. adjustment. The value
to be entered refers to the distance from the sealing surface of the
process fitting (sensor reference plane) to the surface of the product.
A linearization is required if the measured value should be outputted
volume-proportional and not level-proportional. You can find further
linearization types in the extended adjustment.
If you have a non-linear vessel, you can select here the respective
linearization curve.
•
Linear
•
Spherical tank
•
Horizontal cylindrical tank
In addition you have to enter the following vessel dimensions with
non-linear conditions:
•
Height of the socket h
•
Vessel height D
In this window you can adjust the output signal. When the function is
inactive, you can change the settings via the "Extended adjustment".
These settings allow you to optimize the sensor. With them you can
compare a sounded distance with the indicated value and correct it, if
necessary.
Probe immersed in the liquid (covered)
Select whether or not the probe is immersed in the medium.
Step 3
Adjustment
Step 4
Linearization
Step 5
Setting - Output signal
Step 6
Sensor optimization