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7.5 Rod length
7.5.1 Shortening of the rod
The rod can be shortened to adapt to different tank heights�
Ensure that the rod length is not below the minimum permissible rod length
of 150 mm (L
min
)� The unit does not support rod lengths below 150 mm�
For probe lengths < 260 mm no tank adjustment is possible (→ 7.2.7)
Proceed as follows:
► Screw the rod to the unit�
► Mark the desired length (L) on the rod� The
reference point is the lower edge of the process
connection (fig� 7-8)�
► Remove the rod from the unit�
► Shorten the rod at the mark�
► Remove all burrs and sharp edges�
► Screw the rod to the unit again and tighten it�
Recommended tightening torque: 4 Nm
Fig. 7-8
L
min
L
L
min
= 150 mm
In case of high mechanical stress (strong vibration, moving viscous media) it
may be necessary to secure the screw connection, e�g� by a screw retaining
compound�
Substances such as screw retaining compounds may migrate into the
medium�
► Make sure that they are harmless�
7.5.2 Determine rod length L for single probes
► Precisely measure the rod length L� The reference point is the lower edge of
the process connection (fig� 7-8)�
► Note the value� It is needed for setting the device parameters (→ 11.2)�
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