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. 787-7854
BrandRS PRO
MYR95.97
Each
units
K 4.5mm 500mm +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 174-1663
BrandRS PRO
MYR500.03
Each
units
K - 1.5m +250°C Stainless Steel - Miniature Plug 1.5m IEC 584 -
RS Stock No. 847-9748
BrandRS PRO
MYR105.26
Each
units
K - 10m +250°C - - Miniature Plug 10m ANSI -
RS Stock No. 611-8286
BrandRS PRO
MYR167.97
Each
units
N 1.5mm 500mm +1250°C Inconel 600 - Cable 2m IEC -
RS Stock No. 131-4763
BrandRS PRO
MYR211.09
Each
units
J 6mm 2m +350°C - - Standard Plug 2m IEC -
RS Stock No. 872-2569
BrandRS PRO
MYR144.47
Each
units
J M8 Bolt 13mm +250°C Stainless Steel - Cable 2m IEC -
RS Stock No. 787-7838
BrandRS PRO
MYR162.15
Each
units
K 1mm 1.5m +750°C Inconel 600, Stainless Steel - Cable 100mm IEC -
RS Stock No. 136-5885
BrandRS PRO
MYR70.98
Each
units
K - 1m +250°C Teflon PFA - Miniature Plug 1m EN 60584-3:2008, IEC 584-3 -
RS Stock No. 847-1087
BrandRS PRO
MYR168.32
Each
units
K 1mm 1m +1100°C Inconel - Cable 100mm ANSI -
RS Stock No. 397-1387
BrandRS PRO
MYR148.51
Each
units
K 6mm 250mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 847-9710
BrandRS PRO
MYR72.71
Each
units
K 1/0.3mm 5m +250°C - - Miniature Plug 5m ANSI -
RS Stock No. 872-2632
BrandRS PRO
MYR156.13
Each
units
K - - +250°C - - Miniature Plug 5m IEC -
New
RS Stock No. 185-6794
BrandRS PRO
MYR195.80
Each
units
K 1mm 152mm +750°C Inconel 600 - Miniature Plug 1m - -
RS Stock No. 324-1973
BrandRS PRO
MYR278.82
Each
units
J 8mm 20mm +400°C 316 Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 123-6328
BrandRS PRO
MYR28.20
Each
units
T 1/0.3mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 824-0694
BrandRS PRO
MYR257.87
Each
units
K 3mm 2m +1200°C Inconel 600, Stainless Steel - Cable 1m RoHS Compliant 2.1 s
RS Stock No. 824-0607
BrandRS PRO
MYR117.39
Each
units
K 1mm 150mm +800°C Inconel 600 - Miniature Plug - RoHS Compliant <2 s
RS Stock No. 334-2638
BrandRS PRO
MYR109.66
Each
units
J 5mm 20mm +600°C 316L Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
RS Stock No. 847-1160
BrandRS PRO
MYR388.42
Each
units
K 6mm 2m +1100°C Stainless Steel - Cable 100mm ANSI -
RS Stock No. 324-1737
BrandRS PRO
MYR154.64
Each
units
J 5mm 20mm +400°C 316 Stainless Steel - Cable 2.5m RoHS Compliant 0.7 s
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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 ...
Mineral insulated type ’K’ thermocouple Highly flexible, sheath ...
Description:
Mineral insulated type ’K’ thermocouple Highly flexible, sheath can be bent/formed to suit many applications and processes 2.0mm diameter fast response probe Insulated hot junction Probe temperature range -40°C to +1100°C M8 x 2.0mm pitch threaded pot seal Colour coded ...
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 ...