Burkert 8137 Manuel D'instructions page 17

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Sensor orientation
Vessel installations
LEVEL TRANSMITTER 8137 • 4 ... 20 mA/HART
Fig. 10: Deviating socket dimensions
Tip:
LEVEL TRANSMITTER 8137 is optionally also available with antenna
extension. Hence the antenna length can be selected such that the
antenna end protrudes 10 mm (0.4 in) out of the socket.
Align the sensor in liquids as vertical as possible to the product surface
to achieve optimum measuring results.
Fig. 11: 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 get super-
imposed on the useful echo. Make sure when planning your measuring
site that the radar sensor has 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.
d
1½"
50 mm/2"
80 mm/3"
100 mm/4"
d
150 mm/6"
4 Mounting
h
max.
200 mm
250 mm
300 mm
500 mm
800 mm
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