VEGA VEGAPULS 65 (≥ 2.0.0 - ≤ 3.8) Foundation Fieldbus - Manual (Page 14)

1
Fig. 4: Position of the polarisation plane with VEGAPULS 65
1 Marking hole
Make sure that all parts of the instrument in contact with the measured
product, especially the sensor element, process seal and process
fitting, are suitable for the existing process conditions such as process
pressure, process temperature as well as the chemical properties of
the medium.
You can find the specifications in chapter "Technical data" in the or on
the type label.
4.2 Mounting instructions
The 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.
You can counteract the material-induced tension loss with PTFE by
doing the following:
1 Make sure the number of flange screws corresponds to the
number of flange holes
2 Use disc springs in addition to the flange screws for fastening the
flange
3 Tighten 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 • Foundation Fieldbus
4 Mounting
28452
-EN
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