EuroWire January 2016

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Technical article
January 2016 85
Sikora – Germany
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Conclusion
With the introduced technology it
is possible to precisely measure the
concentricity of a conductor in the
insulation as well as the product
parameters, outer diameter, ovality and
wall thickness. The measuring technique
records rotating or in one plane oscillating
eccentricity values of the conductor in
▲ ▲ Picture 6: Technique to determine a sloping position of the cable
▲ ▲ Picture 7: Technique to determine a sag or a bend in the cable
the form of a scatter plot. This scatter plot
allows visualisation of the distribution of
short-term variations of the eccentricity.
Per the four-axes measurement as well
as eight-point eccentricity measurement,
a sloping position of the cable in the
measuring plane can be recognised.
The measuring system compensates
automatically for a sloping position of
the conductor in both horizontal as well
as vertical direction, thus the measuring
results are not influenced.
The measuring system also records
accurate measuring values, even when the
cable is running through the gauge head
with a sag or curved radius.
Using the described measuring tech-
nology in extrusion lines ensures the
production of high quality cables for a
flawless assembly. At the same time, it
contributes to process reliability and,
consequently, cost effectiveness. n
1 Inductive sensors
2 Two parallel, optical line sensors
3 Sag/bend of the cable
4 Type of production (direction)
5 Sloping position of the cable
1 Inductive sensors
2 Two parallel, optical line sensors
3 Sag/bend of the cable
4 Type of production (direction)
5 Sloping position of the cable
Measuring
points