Thermocouples

A thermocouple is essentially a temperature sensor (a device which measures temperature). It is made up of two wires of different metals that, when joined together, create an electrical junction. When the temperature changes at the junction it creates a voltage which can be interpreted to read the temperature. This is also known as the Seebeck effect. You can read more about these tools in our bespoke Thermocouples Guide

Types of Thermocouples

There is a wide range of thermocouples available, each with different characteristics, such as temperature range and their robustness. Each thermocouple is defined by a letter such as K-Type. Common types include J, K, L and T. The letters refer to the type of materials used and therefore the temperature they are usable at. For example, type J is iron and copper-nickel and is useable from around 0°C to 816°C, depending on other characteristics. Some thermocouples come with an additional sheath which insulates the wires to prolong their life.

Thermocouples are ideal tools for measurement of high temperatures and are a robust yet affordable solution.

What are Thermocouples used for?

  • Thermostats
  • Hospital thermometers
  • Vehicle diagnostics
  • Boiler/heating sensors
  • Oven safety features
  • Food thermometers
  • Industrial probe sensor

...
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Description Price Thermocouple Type Probe Diameter Probe Length Maximum Temperature Sensed Probe Material Minimum Temperature Sensed Termination Type Cable Length Standards Met Response Time
RS Stock No. 611-8264
BrandRS PRO
$83.14
Each
units
PT 100 6mm 100mm +200°C Stainless Steel - Cable 2m - -
RS Stock No. 363-0250
BrandRS PRO
$21.58
Each
units
K 1/0.2mm - +250°C - -75°C Miniature Plug 1m IEC -
RS Stock No. 219-4725
BrandRS PRO
$49.51
Each
units
J 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 409-4920
BrandRS PRO
$22.41
Each
units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m IEC 0.1 s
RS Stock No. 621-2271
BrandRS PRO
$48.45
Each
units
K 6mm 2m +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2170
BrandRS PRO
$13.54
Each
units
K 0.3mm - +400°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 896-8399
BrandRS PRO
$23.89
Each
units
PT 1000 5mm 50mm +100°C Stainless Steel - Cable 1.5m - -
RS Stock No. 788-7132
BrandRS PRO
$50.50
Each
units
PT 100 - 30mm +150°C - - - 1 m, 1mm - -
RS Stock No. 409-4908
BrandRS PRO
$17.55
Each
units
K 0.2mm 1m +250°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m RoHS Compliant 0.1 s
RS Stock No. 397-1264
BrandRS PRO
$57.65
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 824-0631
BrandRS PRO
$57.71
Each
units
K 1.5mm 1m +800°C Inconel 600 - Miniature Plug - RoHS Compliant <2 s
RS Stock No. 814-0137
BrandRS PRO
$13.69
Each
units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m ANSI -
RS Stock No. 896-8395
BrandRS PRO
$32.06
Each
units
PT 100 5mm 50mm +100°C Stainless Steel - Cable 1.5m - -
RS Stock No. 334-2616
BrandRS PRO
$71.84
Each
units
PT 1000 6mm 100mm +100°C Stainless Steel - Cable 2m - -
RS Stock No. 455-3968
BrandRS PRO
$122.12
Each
units
PT 100 6mm 50mm +200°C Stainless Steel - Cable 2m - -
RS Stock No. 479-1788
BrandRS PRO
$28.60
Each
units
K 1/0.3mm 3m +250°C - - Miniature Plug 3m RoHS Compliant 0.1 s
RS Stock No. 285-633
BrandRS PRO
$197.67
Each
units
PT 100 6mm 200mm +450°C Stainless Steel - Connection Head - - -
RS Stock No. 363-0294
BrandRS PRO
$30.70
Each
units
K 1/0.2mm 2m +350°C - - Miniature Plug 2m IEC Fast
RS Stock No. 334-2622
BrandRS PRO
$46.04
Each
units
K 5mm 5mm +750°C 316L Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 397-1258
BrandRS PRO
$43.99
Each
units
K 1.5mm 250mm +1100°C Stainless Steel - Cable 1m IEC -