EoW January 2012

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EuroWire – January 2012 42
News
Technology
“ ACID-FREE PROCESS FOR STEEL
ROD CLEANING & SURFACE
PREPARATION”
“New Way to Draw Steel Wire
in the 21st Century”
DCCD process features:
• Eliminates acid, borax and precoatings
• Zero energy consumption
• Direct drawing from bare rod with no
speed limitation, for H/C and L/C
• New Lubricant Viscosity Control
provides exceptionally adherent coating
• Adjustable lubricant residual
• Zero lubricant waste
• Recommended for severe drawing
applications (spring, rope, bead,
CO2 welding, PC strand, plating quality)
• H/C wire drawn at 18 m/s (3600 ft/min)
• Up to 8 times longer die life
• Exiting wire temp. 45°C (113°F)
• Greatly improved wire ductility
DECALUB
31, avenue de Condé
77500 CHELLES, FRANCE
Fax: +33 1 60 20 20 21
E-mail:
Website:
WIRE 2012,
Stand 10 E72
For all LAN, coaxial, telephone or RF cables
the loss-free transmission high frequency,
analogue or digital signals is a major quality
feature. In this context, the measurement
of the capacitance plays an important role,
influencing the capacitance influences the
impedance of the cable for the specified
frequency range.
Capacitance 2000 is a measuring device,
which is installed in the cooling trough
and measures the capacitance of the wire
insulation precisely. At the same time, the
system determines capacitance changes,
provides an extremely fast measuring value
update and detects bare wires.
This technology is realised by the
combination of a short and two long
measuring electrodes, which are integrated
in a measuring tube. The short measuring
electrode of 10 mm length identifies
periodical capacitance variations with high
spatial resolution by means of Fast Fourier
Transformation (FFT).
From the FFT data, the Structural
Return Loss (SRL) is determined and
gives information about the expected
attenuation of the RF signal during data
transmission. The long measuring zone
measures with high precision the average
value of the capacitance.
The avoidance of periodical changes of
the cable is a precondition for an optimum
attenuation characteristic, whereas the
critical interval of the periods is the shorter
the higher the targeted data transmission
rate for the cable increases.
These periodical changes are determined
by the multizone technology of the
Capacitance 2000, as all parameters that
influence quality (eg conductor diameter,
foaming, outer diameter) are reflected in
the capacitance. The accuracy is 0.1 pF per
metre. At line speeds of up to 2,400m/min
predictions of the Structural Return Loss
of 3 GHz, respectively 8 GHz up to 1,300m/
min are possible. In this way, the defined
impedance of the cable can be reproduced
accurately.
The detection of periodical capacitance
variations and the prediction of the
Structural Return Loss (FFT and SRL)
are available as special features directly
at the measuring tube via a diagnosis
interface. For displaying the measuring
values Sikora offers the processor systems
Remote 2000 as well as the Ecocontrol
600/ 1000/2000. The presentation of FFT
and SRL is possible via the Ecocontrol
1000 or 2000.
Sikora AG – Germany
Fax: +49 421 489 0090
Email:
Website:
Assuring youof
loss-free data
transmission
▲ ▲ Capacitance 2000 measures the capacitance and determines periodical capacitance variations by means of Fast
Fourier Transformation (FFT)