VEGA VEGAPULS 61 (≥ 2.0.0 - ≤ 3.8) Foundation Fieldbus - Manual (Page 20)

max.
min.
2
1
Fig. 15: Pipe antenna system in a tank. The vent hole in the surge pipe must be
in one plane with the polarisation marking on the sensor.
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 61 this is approx.
40 mm (1.575 in). The sensor can be used with tube diameters
between 40 … 80 mm (1.575 … 3.15 in).
Bypass tube
As an alternative to the surge pipe in the vessel, a tube system outside
of the vessel is possible as a bypass tube. Select during setup the
function "Bypass tube".
Align the sensor in such a way that the polarisation marking on the
process fitting is in the same plane as the tube holes or the tube
connection openings (see illustration: "VEGAPULS in a bypass tube").
20 VEGAPULS 61 • Foundation Fieldbus
4 Mounting
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