9
3 Mounting
VEGAPULS SR 68 • Modbus and Levelmaster protocol
47164-EN-180226
3.2 Mounting preparations
The instrument is also available in versions with an antenna whose
diameter is larger than the process fitting (thread, flange). In such
cases the antenna must be disconnected from the process fitting
before mounting.
Proceed as follows:
1. Loosen the hexagon socket screws (3) on the antenna socket
with an Allen wrench (size 3)
2. Remove the antenna (4)
Note:
The plastic cone may 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; max. torque see chapter "
Technical data
"
Note:
The radar sensor with rinsing air connection or with antenna exten
-
sion has a notch on the antenna socket for polarization. This notch
must be aligned with the marking on the process fitting.
4
3
5
1
2
Fig. 3: Dismounting of the horn antenna
1 Marking on the process fitting
2 Marking at the antenna socket
3 Screw locking device
4 Hexagon socket screws
5 Antenna
Caution:
A secure hold of the antenna is only ensured with the untwist guard.
The untwist guards inserted on site must hence be used again.
Depending on temperature range and antenna material, these are
spring rings according to DIN 217 or wedge lock washers according
to DIN 25 201.
Horn antenna
