Thermocouple & Extension Wire

Thermocouple extension wire is a hardwearing type of wire used for connecting a thermocouple probe to a readout instrument. Thermocouples are sensors that measure temperature across a wide range of applications in most industrial environments.

What is thermocouple extension wire made from?

Thermocouple extension wire is made from a lower grade of wire than that used in thermocouple probes, so is more economical when used at length. It's typically made with colour-coded (usually PVC) insulation applied to each wire leg. The negative lead is usually insulated in red and the positive lead is the colour of the thermocouple. For added durability and flexibility, a metal overbraid is applied to the insulated wire. For PVC wire this is a tinned copper overbraid, and for PFA it's stainless steel. This added layer protects the wire against abrasion.

Why use thermocouple extension wire?

Thermocouple extension wire is only used to extend the distance between a thermocouple probe and the instrument reading the signal. Thermocouple grade wire is used to make the sensing point of the thermocouple. Extension wire has a lower ambient temperature limit and can't be used in a thermocouple's sensing point.


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Description Price Thermocouple Type Number of Cores Length Minimum Operating Temperature Maximum Operating Temperature Screened/Unscreened Core Strands Insulation Material Cable Shape Number of Strands Size of Strands American Wire Gauge Series Standards Met
RS Stock No. 827-5889
BrandRS PRO
$47.07
Each
units
J 2 50m -10°C +105°C - 7/0.2 mm PVC Flat Pair 7 0.2 mm - - BS 1843-1952, RoHS Compliant
RS Stock No. 768-6645
BrandRS PRO
$43.29
Each
units
J 2 10m -10°C +220°C - 7/0.2 mm PVC Multicore 7 0.2 mm - - IEC, RoHS Compliant
RS Stock No. 768-6610
BrandRS PRO
$29.40
Each
units
N 2 2m -10°C +220°C - 7/0.2 mm PVC Multicore 7 0.2 mm - - IEC, RoHS Compliant
RS Stock No. 827-5653
BrandRS PRO
$36.09
Each
units
T 2 50m -10°C +105°C - 7/0.2 mm PVC Flat Pair 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 611-7980
BrandRS PRO
$151.65
1 Reel of 25 Metre(s)
Reel(s)
K 2 25m -75°C +260°C Unscreened 7/0.2 mm PFA Multicore 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 827-5665
BrandRS PRO
$30.75
Each
units
J 2 10m -10°C +105°C Screened 7/0.2 mm PVC Twisted 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 814-0055
BrandRS PRO
$93.88
Each
units
K 2 50m -75°C 260°C - 7/0.2 mm PFA Teflon Twisted 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 178-0951
BrandRS PRO
$148.64
Each
units
J 1 100m -75°C +260°C Screened 1/0.3 mm PFA Twin Twisted 1 0.3 mm - - -
RS Stock No. 827-5883
BrandRS PRO
$47.07
Each
units
K 2 25m -10°C +105°C - 13/0.2 mm PVC Flat Pair 13 0.2 mm - - IEC 584-3, RoHS Compliant
New
RS Stock No. 185-3012
BrandRS PRO
$29.27
Each
units
- - - - - - - - - - - - - -
RS Stock No. 827-5934
BrandRS PRO
$97.87
Each
units
K 2 50m -75°C +260°C - 1/0.508 mm PFA Teflon Twisted 1 0.508 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 827-5779
BrandRS PRO
$12.68
Each
units
T 2 10m -75°C +260°C - 1/0.2 mm PFA Teflon Twin Twisted 1 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 814-0046
BrandRS PRO
$44.98
Each
units
K 2 25m -75°C +260°C - 7/0.2 mm PFA Teflon Twisted 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 827-5918
BrandRS PRO
$21.98
Each
units
J 2 25m -75°C +260°C - 1/0.2 mm PFA Teflon Twisted 1 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 827-5805
BrandRS PRO
$65.90
Each
units
K 2 50m -75°C +260°C - 1/0.2 mm PTFE Twin Twisted 1 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 433-4183
BrandRS PRO
$188.64
1 Reel of 25 Metre(s)
Reel(s)
S 1 25m - +200°C Unscreened 7/0.2 mm PTFE Single Core 7 0.2 mm - - RoHS Compliant
RS Stock No. 827-6016
BrandRS PRO
$110.55
Each
units
K 2 50m -75°C +260°C - 1/0.508 mm PTFE Twisted 1 0.508 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 827-5732
BrandRS PRO
$24.71
Each
units
J 2 10m -75°C +260°C - 7/0.2 mm PFA Teflon Flat Pair 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 768-6591
BrandRS PRO
$23.82
Each
units
J 2 5m -10°C +220°C - 7/0.2 mm PVC Multicore 7 0.2 mm - - IEC, RoHS Compliant
RS Stock No. 827-5659
BrandRS PRO
$30.45
Each
units
R/S 2 50m -10°C +105°C - 7/0.2 mm PVC Flat Pair 7 0.2 mm - - IEC 584-3, RoHS Compliant
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