User Manual

4 Mounting
4.1 General instructions
With instruments with threaded process fitting, suitable tools must be
applied for tightening the hexagon.
Warning:
The housing must not be used to screw the instrument in! Applying
tightening force can damage internal parts of the housing.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cable entry. Rain and condensation water can thus drain off. This
applies mainly to outdoor mounting as well as installation in areas
where high humidity is expected (e.g. through cleaning processes) or
on cooled or heated vessels.
Make sure that all parts of the instrument exposed to the process, in
particular the antenna, seal and process fitting, are suitable for the
existing process conditions. These include above all the process
pressure, process temperature as well as the chemical properties of
the medium.
You can find the specifications in chapter "Technical data" or on the
type label.
4.2 Mounting preparations - Horn antenna
The instrument is also available in versions where the antenna has a
bigger diameter than the process fitting (thread, flange). The antenna
must therefore be disconnected from the process fitting before
mounting. Proceed as follows:
1 Loosen the hexagon screws (3) on the antenna socket with an
Allen wrench (size 3)
2 Remove the antenna (4)
Note:
The plastic conemust not be pulled out of the antenna socket.
3 Insert the antenna from below into the vessel socket and secure it
against falling off
4 Retighten the antenna with hexagon screws to the antenna socket;
torque max. 10 Nm (7.5 lbf ft)
Screwing in
Moisture
Suitability for the pro-
cess conditions
VEGAPULS 62 • 4 … 20 mA/HART two-wire 11
4 Mounting
36503-EN-100607