17
UK
Substances such as screw retaining compounds may migrate into the
medium� Make sure that they are harmless!
When using mechanical means of securing (e�g� tooth lock washer), protruding
edges must be avoided� They may cause interference reflection�
6.2.2 Installation of the coaxial pipe
This subchapter is only relevant if the unit is to be operated with a coaxial probe�
The coaxial pipe and the rod must be of the same end length� The coaxial
pipe can be shortened (→ 6.3.2).
►
Screw the rod to the unit and tighten
it� Recommended tightening torque:
4 Nm�
►
Slide the sensor seal (A) onto the
thread�
►
Slide the coaxial pipe (B) onto the
rod� Carefully center it and carefully
move the rod through the centring
piece (C) (for lengths > 140 cm
through both centring pieces) of the
coaxial pipe� Do not damage the
centring pieces�
►
Screw onto the sensor thread and
tighten�
A
C
B
32
32
6.3 Shortening of the probe
6.3.1 Shortening of the rod
The rod can be shortened to adapt to different tank heights�
Ensure that the probe length is never below the minimum permissible
probe length of 10 cm (L
min
)! The unit does not support probe lengths below
10 cm� If shorter probes are used, measurement errors can occur�
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�
