Vega VEGAPULS 63 Operating Instructions Manual page 18

4 Mounting
Reference plane
Installation position
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Fig. 3: Position of the polarisation
1 Marking hole
The measuring range of VEGAPULS 63 begins physically at the end
of the antenna; the adjustment, however, begins at the reference
plane. The reference plane is different depending on the sensor ver-
sion.
•
Flange with encapsulated antenna system: The reference
plane is the lower edge of the flange plating
•
Hygienic fittings: The reference plane is the highest contact point
between sensor process fitting and welded socket
The following graphic shows the position of the reference plane with
different sensor versions.
2
Fig. 4: Position of the reference plane
1 Reference plane
2 Flange connections
3 Hygienic fittings
When mounting the VEGAPULS 63, keep a distance of at least
200 mm (7.874 in) to the vessel wall. If the sensor is installed in the
center of dished or round vessel tops, multiple echoes can arise.
These can, however, be suppressed by an appropriate adjustment
(see chapter "Setup").
If you cannot maintain this distance, you should carry out a false
signal suppression during setup. This applies particularly if buildup on
the vessel wall is expected. In such cases, we recommend repeating
the false signal suppression at a later date with existing buildup.
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VEGAPULS 63 • Two-wire 4 ... 20 mA/HART
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