Vega VEGAPULS 62 Operating Instructions Manual page 23

Mounting
22
Fig. 14: Pipe antenna systems in a tank
1 Marking of the polarisation direction
2 Vent hole max. ø 5 mm (0.2 in)
If possible, the antenna diameter of the sensor should
correspond to the inner diameter of the tube. With
VEGAPULS 62 these are approx. 40 mm (1.6 in). The
sensor can be used from tube diameters of 40 ... 80 mm
(1.6 ... 3.2 in).
Take note of the necessary upper vent hole in the surge
pipe which must by displaced by 90° to the polarisation
direction on the sensor (see illustration: Pipe antenna
systems in a tank).
As an alternative to the surge pipe in the vessel, a pipe
system outside of the vessel is possible as bypass tube.
For setup, select the function Bypass tube.
Direct the sensor in such a way that the polarisation
marking on the process fitting is displaced by 90° to the
tube holes or the tube connection openings (see
illustration: VEGAPULS in a bypass tube).
max.
1
2
min.
VEGAPULS 62 - 4 ... 20 mA/HART