19
UK
Installation in plastic tanks6.4.2
To enable sufficient transfer of the
measured signal, note in case of
installation in plastic tanks or metal
tanks with plastic lid:
A drill hole with a minimum diam-•
eter of 150 mm must be applied to
the plastic lid�
For installation of the unit, a flange •
plate (= launching plate R) must be
used which sufficiently covers the
drill hole�
Minimum distance between rod and tank wall = 80 mm, higher for rod lengths > 70
cmandincaseofheavysoiling(→6.1.1).
When installed in plastic tanks, there may be deterioration caused by
electromagnetic interference� Remedy:
Apply a metal foil to the outside of the tank�•
Apply a shielding screen between the level sensor and other electronic •
units�
Operation with coaxial probe efficiently protects the unit from elec-•
tromagnetic interference� Please note the restrictions regarding the
applicationarea(→4.3).
Installation using a flange plate6.4.3
Flange plates are not included in the scope of delivery� They must be ordered
separately(→chapter3).
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