COMPENSATING CABLES
Kerone manufactures a wide range
of Compensating Cables with a variety of
insulations to provide protection from chemical
corrosion, moisture, heat and abrasions,
also known as Thermocouple Extension Wire.
They are provided with metallic covering
to increase the resistance from abrasion,
wear and tear. They are used to avoid electrical
interference in precision control system. |
PVC to PVC
Code ‘A’
The individual bare wires are
extruded with colour coated polyvinyl. Both
the conductors are kept in parallel and
covered with PVC. They are best suited for
the temperature range of 20 to 200 degree
Celsius and can withstand moisture, alkalies,
oil and acids. They are good dielectric,
mechanically strong and economical. |
Applications
They are used in Iron and Steel Plants, Non-Ferrous
metal melting, Heat Treatment, Cement Ceramics,
Chemical Plants, Petrochemical and Fertilizer
Plants, Power Stations, Glass & Food Industries
and Laboratories etc. |
PVC to PVC Plus Overall Asbestos
Code ‘B’
The individual conductors are
PVC coated, kept together and sheathed in
PVC. Finally they are coated with asbestos.
The advantages are similar to that of code
‘A’ and besides which they are
able to withstand electrical short circuits
when contacted with hot surface. |
Conductors
The conductors of
Thermocouple Extension wires are tested
in accordance with the BS 1834 specification
for accuracy and calibrated at 100°C
within +3°C. |
Teflon to Teflon
Code ‘C’
The conductors are Teflon coated individually as well
as when placed together. They can withstand
moisture, acids, vapours and the temperature
of 250 °C.
|
Colour Codes
The colour coding follows BS
1834 specifications. |
Fibreglass to Fibreglass
Code ‘D’
The conductors are
covered with impregnated fibreglass individually
and again in grouping which is finally impregnated
in varnish. The impregnations helps in increasing
the resistance to abrasion and moisture
but are permanently destroyed above 200 °C.
|
Standard Wire Gauges
Standard wires are supplied
with flexible 3/22 SWG conductors. The specific
requirements can have the following conductors
–
1. Solid Conductor – 14, 16, 18, 20
& 22 SWG.
2. Flexible Conductors – 3/20, 3/22,
7/22, 7/30, 14/30 or 24/30 SWG.
|
Asbestos to Asbestos
Code ‘E’
The conductors are
covered with felted asbestos, placed together
and overall covered with asbestos. They
can withstand a continuous temperature of
up to 500°C. |
Calibration
Calibration Code
1) Iron Constantan
(Fe - Constantan) “J”
2) Copper Constantan
(Cu - Constantan) “T”
3) Chromel - Alumel
(CR - AL) (Ni. Cr. - Ni.) “K”
4) Platinum - Platinum
Rhodium 10 % “R”
5) Platinum - Platinum
Rhodium 13 % “S” |
|
Metal Covering
Code ‘F’
The metallic covering increases
the resistance of the standard thermocouple
extension wire against abrasion, mechanical
damage and higher tensile strength. They
comprise of tinned copper wires or galvanized
steel wires in general. The specific requirement
can be provided with Stainless steel metallic
covering. |
Insulation
Kerone’s Single Overall
Code Core
“A” PVC PVC
“B” PVC PVS + ASBESTOS
“C” TEFLON TEFLON
“D” FIBREGLASS FIBREGLASS
“E” ASBESTOS ASBESTOS
“F” METALLIC
COVERINGS |
CALIBRATION |
CODE |
INSULATION COLOUR CODE |
BS 1843 |
+ ve |
-ve |
Overall |
Fe-Constantan |
JX |
Yellow |
Blue |
Black |
Copper Constantan |
TX |
White |
Blue |
Blue |
Chromel Alumel
(CR-AL) or (Ni-Cr-Ni) |
KX |
White |
Blue |
Red |
Pt Pt Th 10 %
or
Pt Pt Bh - 13 % |
RX |
White |
Blue |
Green |
|
Ordering Information
• Mention Calibration
• Select the insulation based on the
environment
• If metallic over braided required
• Mention the wire gauge
• Mention the minimum acceptable quantity
and length.
Standard Packing
100 meters spool. |
Mineral Insulated Thermocouple Extension
Wires & Cables
Mineral Insulated Thermocouple
Extension wires and Cables can be used in
all the places where the conventional wires
cannot be used due to environmental conditions.
The cables are available with metallic sheath
and correct composition conductors. Fused
magnesium oxide powder, the insulation of
the cables withstands very high temperatures.
The cables are annealed to make them bend
according to the requirement. |
For Computerised Temperature Sensing
And Control
Kerone offers complete line of ‘3 - wire’
thermocouple extension wires
In high speed computer
controlled system, any interference along
the extension wire due to the milli volt
signal generated at the remotely located
thermocouple junction can generate erratic
signals. Kerone offers a complete line of
“3 – Wire” thermocouple
extension wire. It consists of negative
and positive conductors insulated with PVC
and a copper drain wire is placed at the
twisted conductors. Aluminised Mylar tape
further wraps this setting. The whole assembly
is PVC coated. The third wire acts as the
common for the sensor and the computer.
Such types of extension wires are also available
with Teflon insulation or fibreglass insulation
for high temperature exposure of the conductor.
|
Multipair Extension Cables
Multipair Extension Cables are
made through specific order with individual
and overall insulation to best suit the
specific installation requirement. They
reduce the cost of installation in comparison
to pulling separate pairs through conduit.
*For quotation, please indicate the quantity.
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