VEGA VEGAPULS 65 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART four-wire - Manual (Page 14)

1
Fig. 4: Position of the polarisation plane with VEGAPULS 65
1 Marking hole
M
ake sure that all parts of the instrument in contact with the measured
product, especially the sensor element, process seal and process
fi
tting, are suitable for the existing process conditions such as process
pressure, process temperature as well as the chemical properties of
the medium.
Y ou can find the specifications in chapter "Technical data" in the or on
the type label.
4.2 Mounting instructions
T he flange screws of VEGAPULS 65 must be always screwed with the
torque stated in the technical data so that the PTFE washer of the
encapsulated antenna system seals.
Y ou can counteract the material-induced tension loss with PTFE by
doing the following:
1 M ake sure the number of flange screws corresponds to the
number of flange holes
2 U se disc springs in addition to the flange screws for fastening the
fl ange
3 T ighten the screws steadily with the torque specified in the
technical data
Suitability for process
conditions
Mounting of instruments
with PTFE-coated
flanges
14 VEGAPULS 65 • 4 … 20 mA/HART four-wire
4 M ounting
28442
-EN
-090305