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. 607-8605
Mfr. Part No.909723/0001
BrandJumo
HK$603.00
Each
units
K 2 25m -50°C +180°C Unscreened - PTFE Multicore - - - - -
RS Stock No. 150-010
BrandRS PRO
HK$93.90
1 Reel of 10 Metre(s)
Reel(s)
J 2 10m -10°C +105°C Unscreened 7/0.2 mm PVC Single Core 7 0.2 mm - - BS 1843-1952, RoHS Compliant
RS Stock No. 407-1523
BrandRS PRO
HK$755.93
1 Reel of 20 Metre(s)
Reel(s)
K 1 20m - +250°C Unscreened - Kapton Single Core - 0.25 mm - - RoHS Compliant
RS Stock No. 363-0418
BrandRS PRO
HK$488.09
Each
units
T 1 25m -75°C +250°C Unscreened 1/0.315 mm PTFE Flat Pair 1 0.315 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant
RS Stock No. 814-0018
BrandRS PRO
HK$217.52
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. 611-7930
BrandRS PRO
HK$1,081.36
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. 607-8554
Mfr. Part No.909723/0001
BrandJumo
HK$467.30
Each
units
K 2 10m -20°C +350°C Unscreened - Fibreglass Multicore - - - - -
RS Stock No. 814-0064
BrandRS PRO
HK$746.80
Each
units
K 2 100m -60°C 350°C - 1/0.3 mm Glass Fibre Flat Pair 1 0.3 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 219-4551
BrandRS PRO
HK$139.32
1 Reel of 25 Metre(s)
Reel(s)
K 2 25m -10°C +105°C Unscreened 7/0.2 mm PVC Multicore 7 0.2 mm - - BS 1843, RoHS Compliant
RS Stock No. 611-7918
BrandRS PRO
HK$757.35
1 Reel of 100 Metre(s)
Reel(s)
J 2 100m -10°C +105°C Screened 7/0.2 mm Mylar Multicore 7 0.2 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant
RS Stock No. 607-8762
Mfr. Part No.909723/0001
BrandJumo
HK$770.00
Each
units
L 2 25m -50°C +180°C Unscreened - PTFE Multicore - - - - -
RS Stock No. 814-0014
BrandRS PRO
HK$1,190.48
Each
units
J 2 200m -10°C 105°C Screened 7/0.2 mm PVC Twisted 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 827-5776
BrandRS PRO
HK$311.98
Each
units
K 2 10m -75°C +260°C - 7/0.2 mm PTFE Flat Pair 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 607-8582
Mfr. Part No.909723/0001
BrandJumo
HK$1,665.00
Each
units
K 4 25m -20°C +350°C Unscreened - Fibreglass Multicore - - - - -
RS Stock No. 814-0020
BrandRS PRO
HK$1,607.17
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. 611-7996
BrandRS PRO
HK$273.58
1 Reel of 25 Metre(s)
Reel(s)
N 2 25m -75°C +250°C Unscreened 1/0.2 mm PFA Twisted Pair 1 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 407-1444
BrandRS PRO
HK$1,017.05
1 Reel of 25 Metre(s)
Reel(s)
RTD 3 25m -10°C +80°C Screened 7/0.2 mm PTFE Multicore 7 0.2 mm - - -
RS Stock No. 607-8576
Mfr. Part No.909723/0001
BrandJumo
HK$840.00
Each
units
K 4 10m -20°C +350°C Unscreened - Fibreglass Multicore - - - - -
RS Stock No. 236-3915
BrandRS PRO
HK$463.50
1 Reel of 100 Metre(s)
Reel(s)
J 2 100m -10°C +105°C Unscreened 7/0.2 mm PVC Multicore 7 0.2 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant
RS Stock No. 236-3909
BrandRS PRO
HK$92.21
1 Reel of 10 Metre(s)
Reel(s)
T 2 10m -60°C +400°C Unscreened 1/0.315 mm Fibreglass Multicore 1 0.315 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant