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. 236-3836
BrandRS PRO
kr 384,64
1 Reel of 25 Metre(s)
Reel(s)
K - 25m - +400°C Unscreened 1/0.315mm Fibreglass Multicore 1 - - - -
RS Stock No. 407-1567
BrandRS PRO
kr 1 145,95
1 Reel of 20 Metre(s)
Reel(s)
K - 20m - +800°C Unscreened - Fibreglass Single Core - - - - -
RS Stock No. 363-0389
BrandRS PRO
kr 286,24
Each
Units
K - 25m - +250°C Unscreened 1/0.2mm PTFE Twin Twisted 1 - - - -
RS Stock No. 827-5659
BrandRS PRO
kr 327,32
Each
Units
R/S - 50m - +105°C - 7/0.2mm PVC Flat Pair 7 - - - -
RS Stock No. 814-0049
BrandRS PRO
kr 210,07
Each
Units
K - 50m - 260°C - 1/0.2mm PFA Teflon Twisted 1 - - - -
RS Stock No. 219-4589
BrandRS PRO
kr 210,77
1 Reel of 10 Metre(s)
Reel(s)
K - 10m - +400°C Unscreened 1/0.315mm Fibreglass Multicore 1 - - - -
RS Stock No. 407-1573
BrandRS PRO
kr 3 107,85
1 Reel of 20 Metre(s)
Reel(s)
K - 20m - +1200°C Unscreened - Ceramic Fibre Single Core - - - - -
RS Stock No. 768-6639
BrandRS PRO
kr 452,46
Each
Units
K - 10m - +220°C - 7/0.2mm PVC Multicore 7 - - - IEC, RoHS Compliant
RS Stock No. 611-8006
BrandRS PRO
kr 1 214,25
1 Reel of 50 Metre(s)
Reel(s)
K - 50m - +260°C Unscreened 7/0.2mm PFA Multicore 7 - - - -
RS Stock No. 219-4769
BrandRS PRO
kr 140,48
1 Reel of 10 Metre(s)
Reel(s)
R/S - 10m - +105°C Unscreened 13/0.2mm PVC Multicore 13 - - - -
RS Stock No. 814-0030
BrandRS PRO
kr 122,33
Each
Units
K - 25m - +260°C - 1/0.2mm PFA Teflon Twisted 1 - - - -
RS Stock No. 814-0042
BrandRS PRO
kr 493,91
Each
Units
K - 100m - 260°C - 1/0.2mm PFA Teflon Twisted 1 - - - -
RS Stock No. 827-5647
BrandRS PRO
kr 520,13
Each
Units
R/S - 50m - +105°C - 13/0.2mm PVC Flat Pair 13 - - - -
RS Stock No. 827-6088
BrandRS PRO
kr 275,67
Each
Units
- - 10m - +350°C - 7/0.2mm Glass Fibre Flat Pair 7 - - - -
RS Stock No. 814-0018
BrandRS PRO
kr 284,05
Each
Units
K - 25m - +105°C - 7/0.2mm PVC Flat Pair 7 - - - -
RS Stock No. 827-5603
BrandRS PRO
kr 351,29
Each
Units
K - 50m - +105°C - 7/0.2mm PVC Flat Pair 7 - - - -
RS Stock No. 219-4573
BrandRS PRO
kr 821,93
1 Reel of 100 Metre(s)
Reel(s)
K - 100m - +105°C Unscreened 7/0.2mm PVC Multicore 7 - - - -
RS Stock No. 814-0020
BrandRS PRO
kr 2 338,76
Each
Units
K - 200m - 105°C - 7/0.2mm PVC Flat Pair 7 - - - -
RS Stock No. 814-0027
BrandRS PRO
kr 1 346,25
Each
Units
K - 100m - 105°C - 7/0.2mm PVC Flat Pair 7 - - - -
RS Stock No. 768-6601
BrandRS PRO
kr 231,50
Each
Units
J - 10m - +220°C - 7/0.2mm PVC Multicore 7 - - - IEC, RoHS Compliant