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 391,09
1 Reel of 25 Metre(s)
Reel(s)
K 2 25m -60°C +400°C Unscreened 1/0.315 mm Fibreglass Multicore 1 0.315 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 407-1567
BrandRS PRO
kr 1 089,47
1 Reel of 20 Metre(s)
Reel(s)
K 1 20m -20°C +800°C Unscreened - Fibreglass Single Core - - - - AFNOR Class 2, NFC 42321-322/323, RoHS Compliant
RS Stock No. 363-0389
BrandRS PRO
kr 228,57
Each
Units
K 1 25m -75°C +250°C Unscreened 1/0.2 mm PTFE Twin Twisted 1 0.2 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant
RS Stock No. 827-5659
BrandRS PRO
kr 378,98
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
RS Stock No. 827-5647
BrandRS PRO
kr 573,71
Each
Units
R/S 2 50m -10°C +105°C - 13/0.2 mm PVC Flat Pair 13 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 219-4769
BrandRS PRO
kr 149,69
1 Reel of 10 Metre(s)
Reel(s)
R/S 2 10m -10°C +105°C Unscreened 13/0.2 mm PVC Multicore 13 0.2 mm - - BS 1843, RoHS Compliant
RS Stock No. 219-4589
BrandRS PRO
kr 180,21
1 Reel of 10 Metre(s)
Reel(s)
K 2 10m -60°C +400°C Unscreened 1/0.315 mm Fibreglass Multicore 1 0.315 mm - - BS 1843, RoHS Compliant
RS Stock No. 814-0030
BrandRS PRO
kr 116,84
Each
Units
K 2 25m -75°C +260°C - 1/0.2 mm PFA Teflon Twisted 1 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 768-6639
BrandRS PRO
kr 439,28
Each
Units
K 2 10m -10°C +220°C - 7/0.2 mm PVC Multicore 7 0.2 mm - - IEC, RoHS Compliant
RS Stock No. 814-0049
BrandRS PRO
kr 213,54
Each
Units
K 2 50m -75°C 260°C - 1/0.2 mm PFA Teflon Twisted 1 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 611-8006
BrandRS PRO
kr 1 214,14
1 Reel of 50 Metre(s)
Reel(s)
K 2 50m -75°C +260°C Unscreened 7/0.2 mm PFA Multicore 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 407-1573
BrandRS PRO
kr 2 864,97
1 Reel of 20 Metre(s)
Reel(s)
K 1 20m - +1200°C Unscreened - Ceramic Fibre Single Core - - - - AFNOR Class 2, NFC 42321-322/323, RoHS Compliant
RS Stock No. 814-0042
BrandRS PRO
kr 472,43
Each
Units
K 2 100m -75°C 260°C - 1/0.2 mm PFA Teflon Twisted 1 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 814-0018
BrandRS PRO
kr 289,01
Each
Units
K 2 25m -10°C +105°C - 7/0.2 mm PVC Flat Pair 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 219-4573
BrandRS PRO
kr 752,20
1 Reel of 100 Metre(s)
Reel(s)
K 2 100m -10°C +105°C Unscreened 7/0.2 mm PVC Multicore 7 0.2 mm - - BS 1843, RoHS Compliant
RS Stock No. 814-0020
BrandRS PRO
kr 2 338,57
Each
Units
K 2 200m -10°C 105°C - 7/0.2 mm PVC Flat Pair 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 814-0027
BrandRS PRO
kr 1 288,06
Each
Units
K 2 100m -10°C 105°C - 7/0.2 mm PVC Flat Pair 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 827-6088
BrandRS PRO
kr 262,85
Each
Units
U 2 10m -60°C +350°C - 7/0.2 mm Glass Fibre Flat Pair 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 827-5603
BrandRS PRO
kr 341,06
Each
Units
K 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. 827-5643
BrandRS PRO
kr 327,94
Each
Units
R/S 2 25m -10°C +105°C - 13/0.2 mm PVC Flat Pair 13 0.2 mm - - IEC 584-3, RoHS Compliant
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