EoW November 2012

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News
Technology
November 2012 33
All over the world huge amounts of
electronic data are transferred every day
more quickly and over longer distances.
Data transfer is mainly done via cables
with optical fibres.
In order to transmit data without loss,
optical fibres have to meet the highest
quality requirements.
Sikora offers a complete series of
measuring and control devices that are
used in the drawing tower during the
production of optical fibres or in further
production processes at the manufacture
of optical fibre cables.
The Fibre Series 6000 monitors and
controls the entire drawing process
and optimises the productivity of the
production.
The Fibre Laser 6003 is an innovative
device for diameter measurement of bare
fibres as well as coated optical fibres.
The measuring principle is based on
diffraction analysis – a method that does
not require optical elements and moving
parts.
The technology is based on the modern
CCD-line technique combined with laser
diodes as light sources and intelligent,
powerful software.
A first gauge head is installed after the
preform to measure the diameter and
position of the bare fibre.
On the basis of the change in position
the gauge head calculates the tension by
means of an FFT-analysis.
The single values of the fibre position are
graphically visualised by the processor
system Fibre Ecocontrol in the form of a
scatter plot and ensure highest accuracy.
A second gauge head before the coating
measures the cold diameter of the fibre
and provides spinning information via FFT
of the ovality.
For this position, Sikora offers a gauge
head with airline detection, the Fibre
Laser 6300 Airline.
This device additionally detects the
smallest airlines from 0.5 micrometres.
The second gauge head is typically
used for diameter control while the the
first gauge head after the preform can
realise the control. This is decided by the
manufacturer of optical fibres.
A third Fibre Laser 6003 measures the
diameter after the coating. In the case of
a secondary coating an additional gauge
head can be installed.
2,500 measurements per second with
high single value precision and a short
exposure time of 1.2 microseconds always
guarantees the highest precision.
The unique measuring principle assures
an accuracy of 0.05 micrometres at a
repeatability of 0.02 micrometres.
For continuous quality control a reliable
lump detector is essential. With a
measuring rate of 3 x 100 kHz the 3-axis
Fibre Lump 6003 detects the smallest
lumps down to a minimum size of 5μm.
In combination with the Sikora
double sensor technology, punctual
non-conformities on the surface are
detected. The faults are analysed
regarding type, dimension, length,
quantity and position.
The data provided by the gauge heads is
recorded and displayed by the processor
system Fibre Ecocontrol. At the monitor
the diameter of the bare and coated fibre
is displayed.
The exact position in the measuring field
is visualised in the form of the scatter plot.
In addition, the vibration frequency of the
fibre is displayed.
The devices of the Fibre Series 6000 have
diverse interfaces such as RS485, RS232,
LAN (Ethernet), four analogue outputs
(uni-/bipolar) or optional Profibus-DP as
well as alternative industrial field buses
such as CANopen, Ethernet/IP, DeviceNet
and ProfiNet.
Factory-calibrated, they keep their
accuracy over the entire life cycle. The
optical measuring principle without
moving parts assures a mean time
between failure (MTBF) of 15 years.
Maintenance is not required.
For the production of loose tubes or
optical fibre cables sheathing lines Sikora
offers innovative technologies.
The company’s expert team gladly
supports you to find the right product
solution for your application: sales@
sikora.net
Sikora AG – Germany
Website:
Optical fibre production
without the compromise
▲ ▲ Production data of the Fibre Series 6000 are visualised at the processor system Fibre Ecocontrol
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