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. 824-0613
BrandRS PRO
MYR139.71
Each
units
K 1mm 1000mm +800°C Inconel 600 - Miniature Plug - RoHS Compliant <2 s
RS Stock No. 219-4652
BrandRS PRO
MYR141.02
Each
units
N 3mm 300mm +1300°C Nicrosil Alloy - Cable 1m IEC -
RS Stock No. 397-1551
BrandRS PRO
MYR130.90
Each
units
K 6mm 150mm +1100°C Stainless Steel - Standard Plug - IEC -
RS Stock No. 804-7990
BrandRS PRO
MYR110.55
Each
units
K - 2m - - - Cable - IEC -
RS Stock No. 136-5889
BrandRS PRO
MYR85.18
Each
units
K - 1m +250°C Teflon PFA - Miniature Plug 1m EN 60584-3:2008, IEC 584-3 -
RS Stock No. 123-6320
BrandRS PRO
MYR42.90
Each
units
K 7/0.2mm - +250°C - - Miniature Plug 1m IEC -
RS Stock No. 787-7848
BrandRS PRO
MYR136.87
Each
units
K 3mm 1.5m +1100°C Inconel 600, Stainless Steel - Cable 100mm IEC -
RS Stock No. 814-0140
BrandRS PRO
MYR43.70
Each
units
K 7/0.2mm - +250°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m ANSI -
RS Stock No. 136-5876
BrandRS PRO
MYR98.84
Each
units
J - - +250°C Teflon PFA - Miniature Plug 3m EN 60584-3:2008, IEC 584-3 -
RS Stock No. 131-4753
BrandRS PRO
MYR66.44
Each
units
K - 2m +260°C - - Miniature Plug 2m IEC -
RS Stock No. 824-0537
BrandRS PRO
MYR144.35
Each
units
K 3mm 500mm +1000°C 310 Stainless Steel - Standard Plug - RoHS Compliant 2 s
RS Stock No. 847-1090
BrandRS PRO
MYR116.08
Each
units
K 1.5mm 500mm +1100°C Inconel - Cable 100mm ANSI -
RS Stock No. 824-0515
BrandRS PRO
MYR157.91
Each
units
K 1.5mm 1m +1200°C Inconel 600, Stainless Steel - Standard Plug - RoHS Compliant 1 s
RS Stock No. 123-6324
BrandRS PRO
MYR103.13
Each
units
K - 10m +250°C - - Miniature Plug 10m IEC -
RS Stock No. 110-4474
BrandRS PRO
MYR109.49
Each
units
T - - +220°C - - Miniature Plug 2m ANSI, RoHS Compliant -
RS Stock No. 174-1682
BrandRS PRO
MYR345.43
Each
units
K 1.5mm 100mm +850°C - - Miniature Plug 2m IEC -
RS Stock No. 455-4286
BrandRS PRO
MYR121.62
Each
units
J 1.5mm 250mm +760°C Nickel Aluminium, Nickel Chrome - Cable 1m IEC -
RS Stock No. 787-7835
BrandRS PRO
MYR101.98
Each
units
K 1mm 500mm +750°C Inconel 600, Stainless Steel - Cable 100mm IEC -
RS Stock No. 814-0134
BrandRS PRO
MYR45.37
Each
units
K 1/0.3mm 2m +250°C - - Miniature Plug 2m ANSI -
RS Stock No. 178-0952
BrandRS PRO
MYR393.67
Each
units
K 6mm 500mm +1100°C Stainless Steel - Connection Head 500mm IEC 584 -
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Mineral insulated Type ’K’ Duplex Thermocouple 310 stainless ...
Description:
Mineral insulated Type ’K’ Duplex Thermocouple 310 stainless steel sheath Sheath can be bent/formed to suit many applications and processes 3.0 or 6.0mm Diameters available Insulated hot junction Probe temperature range -40°C up to +1100°C Standard duplex plug termination (200°C) ...
Fast response, welded exposed junction PFA Teflon® insulated ...
Description:
Fast response, welded exposed junction PFA Teflon® insulated flat pair Single pair of PFA insulated conductors, laid flat with PFA jacket Good mechanical strength and flexibility, resistant to oils, acids and other adverse fluids Thermocouple type K 1/0.3mm or 1/0.5mm ...
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Description:
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The RS PRO IEC K type crocodile clip ...
Description:
The RS PRO IEC K type crocodile clip thermocouple has fibreglass stainless steel over braided PFA Teflon cable. The cable length is 1m and is fitted with a miniature plug. The temperature is between -50°C and 250°C. • Grounded measuring ...