EuroWire January 2016

Technical article

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

▲ ▲ Picture 6 : Technique to determine a sloping position of the cable

Measuring points

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

▲ ▲ Picture 7 : Technique to determine a sag or a bend in the cable

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

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

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January 2016