Vega VEGAPULS 66 Operating Instructions Manual page 34

6 Set up with the display and adjustment module PLICSCOM
Basic adjustment - Max.
adjustment
Basic adjustment - Me-
dium selection
34
with [+] and save with [OK]. The cursor jumps now to the distance
value.
4. Enter the distance value in m for empty vessel (e.g. distance from
the sensor to the vessel bottom) corresponding to the percentage
value.
5. Save the settings with [OK] and move to "Max. adjustment" with
[->].
Proceed as follows:
Max. adjustment
100.00 %
=
1.000 m(d)
2.000 m(d)
1. Prepare the % value for editing with [OK] and set the cursor to the
requested position with [->]. Set the requested percentage value
with [+] and save with [OK]. The cursor jumps now to the distance
value.
2. Enter the appropriate distance value in m (corresponding to the
percentage value) for the full vessel. Keep in mind that the max.
level must lie below the dead band.
3. Save the settings with [OK] and move to "Medium selection" with
[->].
Each product has different reflective properties. In addition, there
are various interfering factors which have to be taken into account:
agitated product surfaces and foam generation (with liquids); dust
generation, material cones and echoes from the vessel wall (with
solids). To adapt the sensor to these different conditions, you should
first select "Liquid" or "Solid".
Medium
Liquid
Information:
With VEGAPULS 66 with electronics version "Increased safety",
"Solid" is preset as factory setting. However, the instrument should be
used preferably in liquids. In such cases, the medium selection should
be set to "Liquid" during setup.
According to the conductivity and the dielectric constant of liquids,
the reflection properties can differ considerably. Therefore additional
options such as "Solvent", "Chem. mixture" and "Water based" are
offered below the menu item Liquid.
With solids, you can also choose between "Powder/Dust", "Granular/
Pellets" or "Ballast/Pebbels".
Through this additional selection, the sensor is adapted perfectly to
the product and measurement reliability, particularly in products with
poor reflective properties, is considerably increased.
VEGAPULS 66 • 4 ... 20 mA/HART - two-wire