Thermocouples

A Thermocouple is 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 this 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 are various types of thermocouples, each with different characteristics, such as temperature range and their robustness. Each thermocouple is defined by a letter such as “K”. 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 provides protection to prolong its life.

Thermocouples are ideal tools for temperature measurement as they are robust yet affordable solutions.

What are Thermocouples used for?

  • Thermostats
  • Hospital thermometers
  • Vehicle diagnostics
  • Boiler/heating sensors
  • Oven safety features
  • Food thermometers
  • Industrial probes/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. 621-2142
BrandRS PRO
$12.68
Each
units
J 2mm - +250°C Teflon PTFE - Cable 1m RoHS Compliant 5 s
RS Stock No. 219-4466
BrandRS PRO
$38.98
Each
units
K 1.5mm 500mm +1100°C Inconel 600 - Cable 100mm IEC -
RS Stock No. 621-2467
BrandRS PRO
$98.68
Each
units
K 6mm 275mm +1100°C 310 Stainless Steel - Connection Head - RoHS Compliant 20 s
RS Stock No. 847-1028
BrandRS PRO
$46.71
Each
units
K 1mm 250mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 847-9665
BrandRS PRO
$12.70
Each
units
K 1/0.2mm 2m +250°C - - Cable 2m ANSI -
RS Stock No. 872-2590
BrandRS PRO
$61.57
Each
units
K M8 Bolt 25mm +250°C Stainless Steel - Cable 2m IEC -
RS Stock No. 847-9678
BrandRS PRO
$14.31
Each
units
K - 1m +250°C - - Cable 1m ANSI -
RS Stock No. 814-0153
BrandRS PRO
$21.14
Each
units
T 0.2 mm, 0.3 mm 2m +250°C - - Miniature Plug 2m ANSI -
RS Stock No. 787-7719
BrandRS PRO
$46.28
Each
units
K 1.5mm 500mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 847-1126
BrandRS PRO
$33.99
Each
units
K 1mm 250mm +1100°C Stainless Steel - Cable 100mm ANSI -
RS Stock No. 787-7850
BrandRS PRO
$32.53
Each
units
K 4.5mm 250mm +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 123-6308
BrandRS PRO
$14.97
Each
units
J 1/0.2mm 2m +260°C - - Miniature Plug 2m IEC -
RS Stock No. 621-2192
BrandRS PRO
$12.70
Each
units
N 0.3mm 2m +1200°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 259-328
BrandRS PRO
$55.31
Each
units
J 6mm 170mm +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 397-1450
BrandRS PRO
$30.69
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - Miniature Plug - IEC -
RS Stock No. 621-2186
BrandRS PRO
$20.87
Each
units
J 0.3mm 2m +750°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 150-004
BrandRS PRO
$18.22
Each
units
J 1/0.3mm 2m +400°C - - Cable 2m BS -
RS Stock No. 847-1040
BrandRS PRO
$46.17
Each
units
K 3mm 250mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 158-907
BrandRS PRO
$6.322
Each (In a Pack of 5)
units
T 1/0.2mm 1m +200°C - - Cable 1m BS -
RS Stock No. 219-4674
BrandRS PRO
$54.39
Each
units
T 1.6mm 100mm +250°C Stainless Steel - Cable 1.5m IEC -
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