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. 433-4420
BrandRS PRO
MYR478.96
Each
units
K 3mm 300mm +1200°C Stainless Steel - Miniature Plug 2m RoHS Compliant 0.7 s
RS Stock No. 847-1040
BrandRS PRO
MYR100.72
Each
units
K 3mm 250mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 159-067
BrandRS PRO
MYR143.78
Each
units
K 3mm 2m +800°C 316 Stainless Steel - Cable 100mm BS -
RS Stock No. 621-2259
BrandRS PRO
MYR112.79
Each
units
J 0.2mm 2m +400°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 872-2531
BrandRS PRO
MYR143.31
Each
units
J 4.76mm 25mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 397-1365
BrandRS PRO
MYR136.44
Each
units
K 3mm 250mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 872-2512
BrandRS PRO
MYR166.23
Each
units
K 3.18mm 40mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 621-2388
BrandRS PRO
MYR297.24
Each
units
J 6mm 200mm +700°C 316L Stainless Steel - Connection Head - RoHS Compliant 5 s
RS Stock No. 872-2581
BrandRS PRO
MYR149.39
Each
units
K M8 Bolt 13mm +250°C Stainless Steel - Cable 2 m Overbraided Cable IEC -
RS Stock No. 219-4393
BrandRS PRO
MYR139.08
Each
units
K 3mm 1m +1100°C 316 Stainless Steel - Cable 100mm IEC -
RS Stock No. 159-118
BrandRS PRO
MYR100.70
Each
units
K 3mm 500mm +1100°C Inconel 600 - Cable 100mm BS -
RS Stock No. 150-026
BrandRS PRO
MYR131.24
Each
units
J 6mm - - - - - - BS -
RS Stock No. 847-1075
BrandRS PRO
MYR212.09
Each
units
K 0.5mm 500mm +750°C Inconel 600, Stainless Steel - Cable 100mm ANSI -
RS Stock No. 787-7728
BrandRS PRO
MYR116.86
Each
units
K 1.5mm 1m +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 151-192
BrandRS PRO
MYR105.62
Each
units
K 1/0.3mm 2m +400°C - - Cable 2m BS -
RS Stock No. 621-2287
BrandRS PRO
MYR56.96
Each
units
K 6.35mm - +200°C Copper - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 804-7987
BrandRS PRO
MYR63.67
Each
units
K - - - - - - - IEC -
RS Stock No. 872-2562
BrandRS PRO
MYR143.54
Each
units
K 4.76mm 75mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 334-2644
BrandRS PRO
MYR120.98
Each
units
J 4mm 4mm +600°C Stainless Steel - Bare Wire Tail 2m RoHS Compliant 15 s
RS Stock No. 814-0137
BrandRS PRO
MYR34.99
Each
units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m ANSI -
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