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
SGD11.50
Each
units
K 1/0.2mm - +250°C - -75°C Miniature Plug 1m IEC -
RS Stock No. 397-1264
BrandRS PRO
SGD41.00
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 363-0294
BrandRS PRO
SGD16.75
Each
units
K 1/0.2mm 2m +350°C - - Miniature Plug 2m IEC Fast
RS Stock No. 228-7467
BrandRS PRO
SGD30.66
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 290-5036
BrandRS PRO
SGD40.28
Each
units
K 1/0.2mm 40mm +150°C Aluminium Foil Backing, Silicone Rubber - Cable 1m IEC -
RS Stock No. 219-4674
BrandRS PRO
SGD50.90
Each
units
T 1.6mm 100mm +250°C Stainless Steel - Cable 1.5m IEC -
RS Stock No. 219-4545
BrandRS PRO
SGD28.40
Each
units
K - 50mm +100°C - - Miniature Plug 2m IEC -
RS Stock No. 409-4908
BrandRS PRO
SGD14.64
Each
units
K 0.2mm 1m +250°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m RoHS Compliant 0.1 s
RS Stock No. 621-2158
BrandRS PRO
SGD5.66
Each (In a Pack of 5)
units
K 2mm 1m +250°C Teflon PTFE - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 621-2237
BrandRS PRO
SGD28.02
Each
units
J 0.2mm - +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 762-1128
BrandRS PRO
SGD35.71
Each
units
K 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 621-2170
BrandRS PRO
SGD10.86
Each
units
K 0.3mm - +400°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 847-9681
BrandRS PRO
SGD12.92
Each
units
T 1/0.3mm 1m +250°C - - Cable 1m ANSI -
RS Stock No. 621-2209
BrandRS PRO
SGD13.96
Each
units
T 0.3mm 2m +350°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 479-1788
BrandRS PRO
SGD15.37
Each
units
K 1/0.3mm 3m +250°C - - Miniature Plug 3m RoHS Compliant 0.1 s
RS Stock No. 259-334
BrandRS PRO
SGD33.15
Each
units
K 6mm 170mm +400°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 219-4371
BrandRS PRO
SGD35.63
Each
units
K 1.5mm 1m +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 123-6332
BrandRS PRO
SGD13.37
Each
units
T - 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 409-4920
BrandRS PRO
SGD18.69
Each
units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m IEC 0.1 s
RS Stock No. 621-2142
BrandRS PRO
SGD8.30
Each
units
J 2mm - +250°C Teflon PTFE - Cable 1m RoHS Compliant 5 s
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