VEGA VEGAPULS 61 (≥ 2.0.0 - ≤ 3.8) Foundation Fieldbus - Manual (Page 18)

Fig. 12: Alignment in liquids
The mounting location of the radar sensor should be a place where no
other equipment or fixtures cross the path of the microwave signals.
Vessel installations such as for example, ladders, limit switches,
heating spirals, struts etc. can cause false echoes that interfere with
the useful echo. Make sure when planning your measuring site that the
radar signals have a "clear view" to the measured product.
In case of existing vessel installations, a false echo storage 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.
Fig. 13: Cover smooth profiles with deflectors
If there are agitators in the vessel, a false echo storage should be
carried out with the agitators in motion. This ensures that the interfering
reflections from the agitators are saved with the blades in different
positions.
Vessel installations
Agitators
18 VEGAPULS 61 • Foundation Fieldbus
4 Mounting
28449
-EN
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