Thermocouples

A thermocouple is essentially a temperature sensor (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 the 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 is a wide range of thermocouples available, each with different characteristics, such as temperature range and their robustness. Each thermocouple is defined by a letter such as K-Type. 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 insulates the wires to prolong their life.

Thermocouples are ideal tools for measurement of high temperatures and are a robust yet affordable solution.

What are Thermocouples used for?

  • Thermostats
  • Hospital thermometers
  • Vehicle diagnostics
  • Boiler/heating sensors
  • Oven safety features
  • Food thermometers
  • Industrial probe 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. 259-334
BrandRS PRO
SGD40.61
Each
units
K 6mm 170mm +400°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 611-7817
BrandRS PRO
SGD22.26
Each
units
PT 100 2.8mm 25mm +650°C Platinum - Solder - - 0.4 s
RS Stock No. 891-9139
BrandRS PRO
SGD32.01
Each
units
PT 100 2mm 10mm +250°C Platinum - Lead Wire 1m - -
RS Stock No. 611-8264
BrandRS PRO
SGD80.91
Each
units
PT 100 6mm 100mm +200°C Stainless Steel - Cable 2m - -
RS Stock No. 219-4371
BrandRS PRO
SGD48.49
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
SGD17.85
Each
units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m IEC 0.1 s
RS Stock No. 373-0372
BrandRS PRO
SGD40.43
Each
units
PT 100 6mm 100mm +200°C Stainless Steel - Cable 2m - -
RS Stock No. 237-1613
BrandRS PRO
SGD48.57
Each
units
PT 100 6mm 35mm +250°C Stainless Steel - Lead Wire 1m - -
RS Stock No. 312-2939
BrandRS PRO
SGD274.83
Each
units
RTD - - +40°C - - - - - -
RS Stock No. 237-1663
BrandRS PRO
SGD54.53
Each
units
PT 100 4mm 150mm +250°C Stainless Steel - Lead Wire 1m - -
RS Stock No. 621-2142
BrandRS PRO
SGD8.30
Each
units
J 2mm - +250°C Teflon PTFE - Cable 1m RoHS Compliant 5 s
RS Stock No. 362-9913
BrandRS PRO
SGD4.53
Each
units
PT 1000 2mm 10mm +500°C Platinum - Solder - - 0.1 s
RS Stock No. 787-7734
BrandRS PRO
SGD43.44
Each
units
K 3mm 500mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 621-2259
BrandRS PRO
SGD37.76
Each
units
J 0.2mm 2m +400°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 787-7719
BrandRS PRO
SGD39.82
Each
units
K 1.5mm 500mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 158-626
BrandRS PRO
SGD16.09
Each
units
K 7mm 1m +200°C Copper - Cable 1m BS -
RS Stock No. 290-5070
BrandRS PRO
SGD29.86
1 Bag of 5
Bag(s)
PT 100 2mm 5mm +500°C Platinum - Solder - - 0.1 s
RS Stock No. 123-6320
BrandRS PRO
SGD14.45
Each
units
K 7/0.2mm - +250°C - - Miniature Plug 1m IEC -
RS Stock No. 397-1488
BrandRS PRO
SGD35.50
Each
units
K 3mm 150mm +1100°C Stainless Steel - Miniature Plug - IEC -