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. 175-4827
BrandRS PRO
$569.95
Each
units
PT 100 6mm 100mm +850 °C, +850 °C Stainless Steel - - - - 1 s
RS Stock No. 123-5604
BrandRS PRO
$59.36
Each
units
PT 100 6mm 150mm +250°C Stainless Steel - Cable 2m - -
RS Stock No. 787-7832
BrandRS PRO
$66.71
Each
units
K 1mm 2m +750°C Inconel 600, Stainless Steel - Cable 100mm IEC -
RS Stock No. 131-4736
BrandRS PRO
$94.75
Each
units
K 1/2in 2m +250°C - - Miniature Plug 2m IEC -
RS Stock No. 200-0610
BrandRS PRO
$35.08
Each
units
J 5mm - +350°C Copper - Bare Wire Tail 2m - -
RS Stock No. 455-3980
BrandRS PRO
$175.04
Each
units
PT 100 8mm 250mm +450°C Stainless Steel - Connection Head - - -
RS Stock No. 397-1292
BrandRS PRO
$55.12
Each
units
K 6mm 250mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 200-0603
BrandRS PRO
$63.97
Each
units
J 4mm 4mm +400°C - - Bare Wire Tail 1m - -
RS Stock No. 174-1660
BrandRS PRO
$96.60
Each
units
PT 100 2.8mm 15mm +650°C Aluminia Ceramic (Body) - Solder - - 0.4 s
RS Stock No. 174-1683
BrandRS PRO
$98.33
Each
units
K 3mm 300mm +850°C - - Miniature Plug 2m IEC -
RS Stock No. 110-4467
BrandRS PRO
$41.22
Each
units
K - 2m +220°C - - Miniature Plug 2m IEC, RoHS Compliant -
RS Stock No. 175-4820
BrandRS PRO
$541.22
Each
units
J 6mm 300mm +1200 °C, +1200 °C Stainless Steel - - - - 1 s
RS Stock No. 174-7518
BrandRS PRO
$300.68
Each
units
J 6mm 200mm +1200°C Stainless Steel - Connection Head - - -
RS Stock No. 324-1800
BrandRS PRO
$69.62
Each
units
J 6mm 20mm +400°C 316 Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 174-1671
BrandRS PRO
$41.38
Each
units
J - - +250°C Stainless Steel - Miniature Plug 1m IEC 584 -
RS Stock No. 762-1124
BrandRS PRO
$37.02
Each
units
T 7/0.2mm 5m +250°C - - Miniature Plug 5m IEC -
RS Stock No. 174-1654
BrandRS PRO
$56.36
Each
units
PT 100 0.9mm 15mm +650°C Aluminia Ceramic (Body) - Solder - - 0.4 s
RS Stock No. 110-4468
BrandRS PRO
$44.41
Each
units
K - 2m +220°C - - Miniature Plug 2m IEC, RoHS Compliant -
RS Stock No. 621-2350
BrandRS PRO
$158.04
Each
units
K 6mm 250mm +1100°C Stainless Steel - Connection Head 1m RoHS Compliant -
RS Stock No. 324-1951
BrandRS PRO
$89.43
Each
units
J 8mm 20mm +400°C 316 Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s