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. 611-7889
BrandRS PRO
HK$1,181.33
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 4937 Part 30 1993 IEC 584-3, RoHS Compliant
RS Stock No. 814-0121
BrandRS PRO
HK$1,525.92
Each
units
K 2 100m -75°C 260°C - 7/0.2 mm PFA Teflon Flat Pair 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 814-0005
BrandRS PRO
HK$450.02
Each
units
J 2 100m -10°C 105°C Unscreened 7/0.2 mm PVC Flat Pair 7 0.2 mm - Type J ANSI MC96.1, RoHS Compliant
RS Stock No. 814-0119
BrandRS PRO
HK$438.90
Each
units
K 2 25m -75°C +260°C - 7/0.2 mm PFA Teflon Flat Pair 7 0.2 mm - - ANSI MC96.1, RoHS Compliant
RS Stock No. 236-3959
BrandRS PRO
HK$421.35
1 Reel of 25 Metre(s)
Reel(s)
K 2 25m -10°C +105°C Screened 7/0.2 mm PVC Multicore 7 0.2 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant
RS Stock No. 611-8006
BrandRS PRO
HK$940.67
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. 813-9995
BrandRS PRO
HK$112.21
Each
units
J 2 25m -10°C +105°C Unscreened 7/0.2 mm PVC Flat Pair 7 0.2 mm - Type J ANSI MC96.1, RoHS Compliant
RS Stock No. 219-4589
BrandRS PRO
HK$133.44
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. 236-3858
BrandRS PRO
HK$900.90
1 Reel of 25 Metre(s)
Reel(s)
K 2 25m -75°C +250°C Unscreened 7/0.2 mm PTFE Flat 7 0.2 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant
RS Stock No. 827-5937
BrandRS PRO
HK$551.99
Each
units
K 2 100m -75°C +260°C - 1/0.315 mm PFA Teflon Twisted 1 0.315 mm - - IEC 584-3, 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. 407-1545
BrandRS PRO
HK$488.66
1 Reel of 20 Metre(s)
Reel(s)
K 1 20m - +600°C Unscreened - Fibreglass Single Core - - - - AFNOR Class 2, NFC 42321-322/323
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. 827-5873
BrandRS PRO
HK$1,006.47
Each
units
J 2 50m -60°C +350°C - 7/0.2 mm Glass Fibre Flat Pair 7 0.2 mm - - IEC 584-3, RoHS Compliant
RS Stock No. 814-0112
BrandRS PRO
HK$357.08
Each
units
VX 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. 607-8633
Mfr. Part No.909723/0001
BrandJumo
HK$558.00
Each
units
K 4 10m -50°C +180°C Unscreened - PTFE Multicore - - - - -
RS Stock No. 814-0115
BrandRS PRO
HK$661.51
Each
units
VX 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. 814-0014
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. 607-8683
Mfr. Part No.909723/0001
BrandJumo
HK$1,670.00
Each
units
J 2 25m -20°C +350°C Unscreened - Fibreglass Multicore - - - - -
RS Stock No. 762-1152
BrandRS PRO
HK$810.06
1 Reel of 100 Metre(s)
Reel(s)
K 2 25m -10°C +105°C Unscreened 13/0.2 mm PVC Twisted Pair 13 0.2 mm - - BS 4937 Part 30 1993 IEC 584-3, RoHS Compliant
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