Special insulation as per requirement
of PVC, Silicone, Fluorinated polymeric
or Glass filament
Conductor Resistance According
to
DIN
43713
Fe:
0.080
Ohm/m
CuNi:
0.327
Ohm/m
NiCr:
0.720
Ohm/m
Ni:
270
Ohm/m
PtRh:
0.023
Ohm/m
Pt:
0.041
Ohm/m
Test Voltage For PVC, Fluorinated polymeric
and Silicone cables:
Conductor/Conductor
500V
Conductor/Shield
500V
Shield/Shield
500V
Test Voltage
Cables with Glass Filament
Conductor/Conductor 500 V
Insulation Resistance For PVC, Fluorinated polymeric
and Silicone cables: min. 10 MOhm x km
Technical
Data Continued
Capacitance Approximate Value - nF/km
Stranded
Wire 1.5mm2
Solid
Wire 1.5mm2
Stranded
Wire 0.22mm2
PVC conductor pair
135
138
115
Shielded
240
245
180
FEP conductor pair
60
60
45
Shielded
120
120
70
Silicone conductor
80
70
45
Induction (guiding value) For PVC, Fluorinated
polymeric and Silicone cables <
1 mH/km
Corrosiveness of Combustion Gases (Free
from Halogen)
Silicone and Glass filament Test method to VDE 0472 part 813
and IEC 60754-1
No development of corrosive gases
Behavior in Fire PVC self-extinguishing and flame retardant
according to VDE 0482-322-1-2, DIN EN 60332-1-2 / IEC 60332-1 (equivalent DIN VDE 0472 part 804
test method B)
Flame Test to DIN VDE 0482 part 266-2 /
HD 405.3, BS 4066 part 3 / EN 50266-2/ IEC 60332-3
(equivalent DIN VDE 0472 part 804 test method
C)
Approvals
Cable
Construction
Conductors of stranded wires or solid, insulated
with special material
Conductors: Fe/CuNi, Ni/Cr Ni or Pt Rh/Pt
Insulation: PVC, Silicone, Fluorinated polymeric
or glass filament
Conductor identification: color coded, single
color (see also color identification table)
Color code for pairs
from 3 pairs and above the individual pairs
number coded
Jacket materials: PVC, Silicone, Fluorinated
polymeric or glass filament braiding
Shielded braiding of galvanized steel wire
(type SY) or galvanized copper wire braided
shielding
Measuring
For temperature measuring. Tthe temperature is dependent upon the characteristics
of materials are taken into consideration,
for example the expansion thermometer of
the thermocouples etc. Temperature measuring
appliances with a thermocouple as transmitter
of the measured value consists generally
of the thermocouple, the connection between
the junction and a reference part, a comparative
part where the temperature is known under
a voltage measuring device. The fitted connection
line between the thermocouple and the comparative
part must have the same thermo electrical
characteristics as the thermocouple. The
difference of temperature is measured between
the measuring point and the comparative part
of the cable. Tolerance of the meter resistance ±10%
For Hazardous Areas
The compensating cables
for thermo-elements with plastic insulation
are permitted to have an imprint of color
longitudinal stripe of the same belonging
thermo-element types and as follows:
Cu/Cu-Ni = brown
Fe/Cu-Ni = dark blue
NiCr / Ni = green
Pt-Rh/Pt = white
The compensating cables for thermo-elements
with mineral insulation or with metal braiding
must be identified with a light blue colored
tape of sufficient width for intrinsic safe,
which can be webbed in the braiding.
Application
Compensating cables are an essential part of exact and precise measuring capabilities. They are used as extension leads from the thermocoupling elements to the measure gauge. Compensating cables are made up of a positive and a negative core which, at a thermocoupler temperature of up to +200°C/392°F, retain the same properties as a Thermopair according to DIN 43710.
Properties
Materials (Compensating
wires and strands)
We distinguish between
original raw materials and substitutes
Compensating wires
and strands of original
raw materials are made of the same material as the
corresponding thermocouple and they are
called Thermocable or Thermocouplecable
Compensating wires
and strands of substitute
materials, which
consist of alloys and are not identical
with the corresponding thermocouple are
called Compensating Cable
Substitute
materials are used for the Thermo pairs type K and type N
Precious metal
thermopairs
Type R, type S, type B consist of thermo
materials
Thermocouple Cables
Consists of the same element material as
the thermocouple and are tested to the same
temperatures
These cables are manufactured to customers
request
Note
Thermomaterials consist of very expensive
materials while the substitutes are much
cheaper
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