Thermocouple & Extension Wire

Thermocouples are sensors that measure temperature across a wide range of applications in most industrial environments, and thermocouple extension wires used to create a hardwearing connection between the thermocouple probe to a readout instrument. These extension wires are used to extend a thermocouple signal back to the instrument and cannot be used in a thermocouple probe. At RS Components, we have a curated range of thermocouple extension wires suitable for J, K, L, N, R/S, RTD, S and T thermocouples from leading brands in the industry, including Jumo, Keysight Technologies, Reckmann and our own RS PRO.

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 and cannot be used as part of the probe itself. Thermocouple grade wire is used instead to make the sensing point of the thermocouple, as extension wire has a lower ambient temperature limit, which means may return a signal representing higher temperature readings than those that would be returned by a proper thermocouple probe, and therefore extension wire can't be used in a thermocouple's sensing point. Thermocouple wire can be used as an extension if necessary.


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Omschrijving Prijs Thermocouple Type Length Maximum Operating Temperature Screened/Unscreened Core Strands Insulation Material Cable Shape Number of Strands American Wire Gauge Series Standards Met Voltage Rating
RS-stocknr. 607-8605
Fabrikantnummer909723/0001
FabrikantJumo
73,12 €
Each
Aantal stuks
K 25m +180°C Unscreened - PTFE Multicore - - - - -
RS-stocknr. 607-8627
Fabrikantnummer909723/0001
FabrikantJumo
73,12 €
Each
Aantal stuks
K 25m +180°C Unscreened - PTFE Multicore - - - - -
RS-stocknr. 607-8611
Fabrikantnummer909723/0001
FabrikantJumo
40,80 €
Each
Aantal stuks
K 10m +180°C Unscreened - PTFE Multicore - - - - -
RS-stocknr. 607-8633
Fabrikantnummer909723/0001
FabrikantJumo
66,24 €
Each
Aantal stuks
K 10m +180°C Unscreened - PTFE Multicore - - - - -
RS-stocknr. 607-8728
Fabrikantnummer909723/0001
FabrikantJumo
103,80 €
Each
Aantal stuks
L 25m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8576
Fabrikantnummer909723/0001
FabrikantJumo
92,76 €
Each
Aantal stuks
K 10m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8655
Fabrikantnummer909723/0001
FabrikantJumo
68,46 €
Each
Aantal stuks
J 10m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8582
Fabrikantnummer909723/0001
FabrikantJumo
194,30 €
Each
Aantal stuks
K 25m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8677
Fabrikantnummer909723/0001
FabrikantJumo
86,32 €
Each
Aantal stuks
J 10m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8699
Fabrikantnummer909723/0001
FabrikantJumo
46,14 €
Each
Aantal stuks
L 10m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8649
Fabrikantnummer909723/0001
FabrikantJumo
134,92 €
Each
Aantal stuks
K 25m +180°C Unscreened - PTFE Multicore - - - - -
RS-stocknr. 607-8712
Fabrikantnummer909723/0001
FabrikantJumo
52,58 €
Each
Aantal stuks
L 10m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8762
Fabrikantnummer909723/0001
FabrikantJumo
70,00 €
Each
Aantal stuks
L 25m +180°C Unscreened - PTFE Multicore - - - - -
RS-stocknr. 607-8683
Fabrikantnummer909723/0001
FabrikantJumo
179,96 €
Each
Aantal stuks
J 25m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8598
Fabrikantnummer909723/0001
FabrikantJumo
38,86 €
Each
Aantal stuks
K 10m +180°C Unscreened - PTFE Multicore - - - - -
RS-stocknr. 607-8706
Fabrikantnummer909723/0001
FabrikantJumo
89,42 €
Each
Aantal stuks
L 25m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8560
Fabrikantnummer909723/0001
FabrikantJumo
100,70 €
Each
Aantal stuks
K 25m +350°C Unscreened - Fibreglass Multicore - - - - -
RS-stocknr. 607-8554
Fabrikantnummer909723/0001
FabrikantJumo
51,24 €
Each
Aantal stuks
K 10m +350°C Unscreened - Fibreglass Multicore - - - - -