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7.3 Probe length
7.3.1 Shorten the probe
The probe can be shortened to adapt to different tank heights�
For hygienic requirements:
Before shortening ensure that the required surface quality can be restored,
e�g� by grinding, polishing etc��
Ensure that the probe length is not below the minimum permissible probe
length (L
min
) of 150 mm� The unit does not support probe lengths below 150
mm�
With probe lengths < 260 mm no tank adjustment is possible (→ 7.1.7
Notes on tank adjustment)�
Do not damage the surfaces of the process connection and the probe�
► Use suitable tools with plastic surfaces�
Proceed as follows:
► Screw the probe to the unit�
► Mark the desired length (L) on the probe� The
reference point is the lower edge of the process
connection�
► Remove the probe from the unit� Make sure that the
O-ring between the probe attachment piece and the
probe does not get lost�
► Shorten the probe at the mark�
► Remove all burrs and sharp edges� For hygienic
requirements: Round the end of the probe and
restore the original surface quality by appropriate
methods (grinding, polishing)�
L
min
L
1
(1) O-ring
► Check the correct position of the O-ring at the probe attachment point (1)�
Replace if damaged�
► Screw the probe to the unit again and tighten it�
Recommended tightening torque: 6�5 Nm�
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