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. 433-4212
BrandRS PRO
kr 802,98
1 Reel of 25 Metre(s)
Reel(s)
S - 25m - +105°C Unscreened - PVC/Glass Fibre Single Core - - - - RoHS Compliant
RS Stock No. 814-0061
BrandRS PRO
kr 561,01
Each
Units
K - 50m - 350°C - 1/0.3mm Glass Fibre Flat Pair 1 - - - -
RS Stock No. 814-0092
BrandRS PRO
kr 445,66
Each
Units
T - 100m - 260°C - 1/0.3mm PFA Teflon Twisted 1 - - - -
RS Stock No. 814-0052
BrandRS PRO
kr 282,75
Each
Units
K - 25m - +350°C - 1/0.3mm Glass Fibre Flat Pair 1 - - - -
RS Stock No. 814-0008
BrandRS PRO
kr 1 049,74
Each
Units
J - 200m - 105°C Unscreened 7/0.2mm PVC Flat Pair 7 - - - -
RS Stock No. 827-5671
BrandRS PRO
kr 722,13
Each
Units
K - 50m - +105°C Screened 7/0.2mm PVC Twisted 7 - - - -
RS Stock No. 407-1444
BrandRS PRO
kr 1 486,73
1 Reel of 25 Metre(s)
Reel(s)
RTD - 25m - +80°C Screened 7/0.2mm PTFE Multicore 7 - - - -
RS Stock No. 814-0096
BrandRS PRO
kr 95,12
Each
Units
T - 25m - +260°C - 1/0.2mm PFA Teflon Twisted 1 - - - -
RS Stock No. 814-0064
BrandRS PRO
kr 1 139,07
Each
Units
K - 100m - 350°C - 1/0.3mm Glass Fibre Flat Pair 1 - - - -
RS Stock No. 611-8028
BrandRS PRO
kr 444,56
1 Reel of 25 Metre(s)
Reel(s)
T - 25m - +260°C Unscreened 7/0.2mm PFA Multicore 7 - - - -
RS Stock No. 236-3858
BrandRS PRO
kr 1 054,43
1 Reel of 25 Metre(s)
Reel(s)
K - 25m - +250°C Unscreened 7/0.2mm PTFE Flat 7 - - - -
RS Stock No. 827-5801
BrandRS PRO
kr 158,52
Each
Units
K - 10m - +260°C - 1/0.2mm PTFE Twin Twisted 1 - - - -
RS Stock No. 827-5700
BrandRS PRO
kr 663,10
Each
Units
K - 50m - +350°C - 1/0.3mm Glass Fibre Flat Pair 1 - - - -
RS Stock No. 827-5921
BrandRS PRO
kr 287,34
Each
Units
J - 25m - +260°C - 1/0.508mm PFA Teflon Twisted 1 - - - -
RS Stock No. 433-4155
BrandRS PRO
kr 564,20
1 Reel of 20 Metre(s)
Reel(s)
T - 20m - +600°C Unscreened - Glass Fibre Single Core - - - - -
RS Stock No. 814-0080
BrandRS PRO
kr 105,98
Each
Units
T - 25m - +260°C - 1/0.3mm PFA Teflon Twisted 1 - - - -
RS Stock No. 768-6620
BrandRS PRO
kr 343,77
Each
Units
K - 5m - +220°C - 7/0.2mm PVC Multicore 7 - - - IEC, RoHS Compliant
RS Stock No. 762-1152
BrandRS PRO
kr 967,89
1 Reel of 100 Metre(s)
Reel(s)
K - 25m - +105°C Unscreened 13/0.2mm PVC Twisted Pair 13 - - - -
RS Stock No. 236-3959
BrandRS PRO
kr 378,16
1 Reel of 25 Metre(s)
Reel(s)
K - 25m - +105°C Screened 7/0.2mm PVC Multicore 7 - - - -
RS Stock No. 827-5612
BrandRS PRO
kr 1 167,69
Each
Units
K - 200m - +105°C - 7/0.2mm PVC Flat Pair 7 - - - -