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6.4.4 Installation in plastic tanks
150 mm
R
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 diameter of 150 mm must be applied to the plastic
lid�
► For installation of the unit, a metal flange plate (= launching plate R) must be
used which sufficiently covers the drill hole (→ accessories)�
► Ensure the minimum distance (= 80 mm) between rod and tank wall, higher for
probe lengths > 70 cm and in case of heavy soiling (→ 6.1.1)�
When installed in plastic tanks, there may be deterioration caused by
electromagnetic interference� Corrective measures:
• 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
electromagnetic interference� Please note the restrictions regarding the
application area (→ 4.3)�
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