VEGA VEGAFLEX 83 Profibus PA Polished version - Manual (Page 58)

58
7 Setup with PACTware
VEGAFLEX 83 • Profibus PA
44223-EN-130910
Type of medium
Here you can see which type of medium your instrument is suitable
for. If this function is inactive, the medium type your instrument is suit-
able for was already preset.
Information:
In special cases you can change the type of medium. This setting can
be changed under "Extended adjustment".
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 vessel
•
Level in the bypass/standpipe
•
Interface in the vessel
•
Interface in the bypass/standpipe
•
Demonstration mode
Level measurement: If you select "Level", you can select the proper-
ties of the medium in another field.
Interface measurement: If you select "Interface", the instrument needs
more information, such as the distance to the interface, the dielectric
constant of the upper medium or whether or not there is a superim-
posed gas phase.
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.
•
Liquids
– Solvents, oils, LPG - dielectric constant < 3
– Chemical mixtures - dielectric constant 3 … 10
– Water-based - dielectric constant > 10
•
Bulk solids
– Dusts, wood chips - dielectric constant < 1.5
– Granules, dusts, powders - dielectric constant 1.5 … 3
– Cereals, flour - dielectric constant > 3
Application - Interface measurement
The interface measurement refers to the phase limit between two
liquids. The total level is also available as a measured value.
•
Superimposed gas phase present
– Check if there is a superimposed gas phase in the vessel. This
is always the case if the total level never touches the process
fitting.
•
Properties
– Here you can enter the dielectric constant of the upper medium
– As an alternative you can enter the distance to the interface
Step 2
Application