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. 363-0250
BrandRS PRO
MYR50.97
Each
units
K 1/0.2mm - +250°C - -75°C Miniature Plug 1m IEC -
RS Stock No. 397-1264
BrandRS PRO
MYR106.68
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 621-2489
BrandRS PRO
MYR332.00
Each
units
K 6mm 625mm +1100°C 310 Stainless Steel - Connection Head - RoHS Compliant 20 s
RS Stock No. 787-7841
BrandRS PRO
MYR132.67
Each
units
K 1.5mm 1.5m +1100°C Inconel 600, Stainless Steel - Cable 100mm IEC -
RS Stock No. 397-1488
BrandRS PRO
MYR139.50
Each
units
K 3mm 150mm +1100°C Stainless Steel - Miniature Plug - IEC -
RS Stock No. 236-4255
BrandRS PRO
MYR144.95
Each
units
K 6mm - +250°C Stainless Steel - Miniature Plug 1m IEC -
RS Stock No. 397-1270
BrandRS PRO
MYR102.67
Each
units
K 3mm 250mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 824-0644
BrandRS PRO
MYR121.26
Each
units
K 1mm 150mm +800°C Inconel 600 - Bare Wire Tail 1m RoHS Compliant 7 s
RS Stock No. 621-2271
BrandRS PRO
MYR111.47
Each
units
K 6mm - +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2170
BrandRS PRO
MYR85.45
Each
units
K 0.3mm - +400°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 363-0266
BrandRS PRO
MYR35.60
Each
units
T 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 259-328
BrandRS PRO
MYR108.11
Each
units
J 6mm 170mm +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 219-4725
BrandRS PRO
MYR81.82
Each
units
J 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 762-1115
BrandRS PRO
MYR210.85
Each
units
K 4.5mm 2m +250°C - - Miniature Plug 2m IEC -
RS Stock No. 219-4387
BrandRS PRO
MYR75.43
Each
units
K 3mm 500mm +1100°C 316 Stainless Steel - Cable 100mm IEC -
RS Stock No. 219-4539
BrandRS PRO
MYR85.59
Each
units
K 3mm 300mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 363-0323
BrandRS PRO
MYR38.74
Each
units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 123-6314
BrandRS PRO
MYR57.08
Each
units
K 1/0.508mm - +350°C - - Cable 1m IEC -
RS Stock No. 409-4908
BrandRS PRO
MYR38.11
Each
units
K 0.2mm - +250°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m RoHS Compliant 0.1 s
RS Stock No. 259-334
BrandRS PRO
MYR88.83
Each
units
K 6mm 170mm +400°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s