Vega VEGAPULS 21 Operating Instructions Manual page 14

4 Mounting
Vessel installations
14
Fig. 10: Thread mounting
If the reflective properties of the medium are good, you can mount
VEGAPULS 21 on sockets longer than the antenna. The socket end
should be smooth and burr-free, if possible also rounded.
You will find recommended values for socket heights in the following
illustration or the table. The values come from typical applications.
Deviating from the proposed dimensions, also longer sockets are
possible, however the local conditions must be taken into account.
Fig. 11: Socket mounting
Socket diameter d
40 mm 1½"
50 mm 2"
80 mm 3"
100 mm 4"
150 mm 6"
Note:
When mounting on longer sockets, we recommend carrying out a
false signal suppression (see chapter "Parameter adjustment").
The mounting location of the radar sensor should be a place where no
other equipment or fixtures cross the path of the radar signals.
Vessel installations, such as e.g. ladders, limit switches, heating spi-
rals, struts, etc., can cause false echoes and impair the useful echo.
Make sure when planning your measuring point that the radar sensor
has a "clear view" to the measured product.
In case of existing vessel installations, a false signal suppression
should be carried out during setup.
If large vessel installations such as struts or supports cause false
echoes, these can be attenuated through supplementary measures.
Small, inclined sheet metal baffles above the installations scatter the
radar signals and prevent direct interfering reflections.
d
Socket length h
≤ 150 mm
≤ 200 mm
≤ 300 mm
≤ 400 mm
≤ 600 mm
VEGAPULS 21 • Two-wire 4 ... 20 mA/HART
≤ 5.9 in
≤ 7.9 in
≤ 11.8 in
≤ 15.8 in
≤ 23.6 in