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. 621-2293
BrandRS PRO
MYR144.14
Each
units
K 13 → 20mm - +1100°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 479-1788
BrandRS PRO
MYR59.21
Each
units
K 1/0.3mm 3m +250°C - - Miniature Plug 3m RoHS Compliant 0.1 s
RS Stock No. 847-1031
BrandRS PRO
MYR125.35
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 621-2372
BrandRS PRO
MYR256.91
Each
units
J 6mm 400mm +700°C 316L Stainless Steel - Connection Head - RoHS Compliant 5 s
RS Stock No. 847-1028
BrandRS PRO
MYR51.90
Each
units
K 1mm 250mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 621-2322
BrandRS PRO
MYR125.08
Each
units
K 40 → 50mm - +1100°C 316 Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2158
BrandRS PRO
MYR30.352
Each (In a Pack of 5)
units
K 2mm - +250°C Teflon PTFE - Cable 1m RoHS Compliant 0.7 s
RS Stock No. 621-2221
BrandRS PRO
MYR142.11
Each
units
K 6mm 175mm +1100°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 158-626
BrandRS PRO
MYR58.73
Each
units
K 7mm 1m +200°C Copper - Cable 1m BS -
RS Stock No. 159-045
BrandRS PRO
MYR105.82
Each
units
K 3mm 500mm +800°C 316 Stainless Steel - Cable 100mm BS -
RS Stock No. 151-271
BrandRS PRO
MYR208.36
Each
units
T 1.6mm 100mm +250°C Constantan, Copper - Cable 1.5m BS -
RS Stock No. 872-2590
BrandRS PRO
MYR175.51
Each
units
K M8 Bolt 25mm +250°C Stainless Steel - Cable 2 m Overbraided Cable IEC -
RS Stock No. 847-1122
BrandRS PRO
MYR64.57
Each
units
K 1mm 150mm +1100°C Stainless Steel - Cable 100mm ANSI -
RS Stock No. 621-2164
BrandRS PRO
MYR48.824
Each (In a Pack of 5)
units
T 2mm - +350°C Teflon PTFE - Cable 1m RoHS Compliant 5 s
RS Stock No. 228-7467
BrandRS PRO
MYR79.02
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 100mm IEC -
RS Stock No. 814-0147
BrandRS PRO
MYR49.39
Each
units
K 1/0.3mm 1m +350°C - - Miniature Plug 1m ANSI -
RS Stock No. 847-1043
BrandRS PRO
MYR119.71
Each
units
K 3mm 500mm +1100°C Stainless Steel - Cable 1m ANSI -
RS Stock No. 409-4920
BrandRS PRO
MYR68.13
Each
units
K 1.2mm - +450°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m IEC 0.1 s
RS Stock No. 787-7822
BrandRS PRO
MYR84.77
Each
units
K 1mm 150mm +750°C Inconel 600, Stainless Steel - Cable 100mm IEC -
RS Stock No. 787-7709
BrandRS PRO
MYR110.34
Each
units
K 1mm 500mm +1100°C Stainless Steel - Cable 1m IEC -
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