VEGA VEGAPULS 66 (≥ 2.0.0 - ≤ 3.8) enamel 4 … 20 mA_HART four-wire - Manual (Page 19)

max.
min.
2
1
Fig. 12: 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 holde max. ø 5 mm (0.2 in)
I
f possible, the diameter of the sensor antenna should correspond to
the inner diameter of the tube. With VEGAPULS 66 this is approx.
50
mm (1.969 in) depending on the antenna. The sensor can be used
with tube diameters between 50 … 250 mm (1.969 … 9.843 in).
Bypass tube
A
s 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".
A lign the sensor in such a way that the polarisation marking on the
sensor flange is in the same plane as the tube holes or the tube
connection openings (see illustration: "VEGAPULS in a bypass tube").
VEGAPULS 66 enamel • 4 … 20 mA/HART four-wire 19
4 M ounting
31954
-EN
-090305