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. 363-0250
BrandRS PRO
MYR32.55
Each
units
K 1/0.2mm - +250°C - -75°C Miniature Plug 1m IEC -
RS Stock No. 397-1264
BrandRS PRO
MYR113.27
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 621-2489
BrandRS PRO
MYR347.47
Each
units
K 6mm 625mm +1100°C 310 Stainless Steel - Connection Head - RoHS Compliant 20 s
RS Stock No. 787-7841
BrandRS PRO
MYR134.47
Each
units
K 1.5mm 1.5m +1100°C Inconel 600, Stainless Steel - Cable 100mm IEC -
RS Stock No. 397-1832
BrandRS PRO
MYR205.38
Each
units
PT 100 6mm 150mm +200°C Stainless Steel - Cable 1m - -
RS Stock No. 397-1488
BrandRS PRO
MYR111.53
Each
units
K 3mm 150mm +1100°C Stainless Steel - Miniature Plug - IEC -
RS Stock No. 236-4255
BrandRS PRO
MYR239.60
Each
units
K 6mm - +250°C Stainless Steel - Miniature Plug 1m IEC -
RS Stock No. 397-1270
BrandRS PRO
MYR155.39
Each
units
K 3mm 250mm +1100°C Stainless Steel - Cable 1m IEC -
RS Stock No. 824-0644
BrandRS PRO
MYR190.34
Each
units
K 1mm 150mm +800°C Inconel 600 - Cable 1m RoHS Compliant 7 s
RS Stock No. 621-2170
BrandRS PRO
MYR42.78
Each
units
K 0.3mm - +400°C - - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 621-2271
BrandRS PRO
MYR96.27
Each
units
K 6mm 2m +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 363-0266
BrandRS PRO
MYR38.42
Each
units
T 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -
RS Stock No. 219-4725
BrandRS PRO
MYR112.89
Each
units
J 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC -
RS Stock No. 259-328
BrandRS PRO
MYR126.55
Each
units
J 6mm 170mm +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s
RS Stock No. 373-0372
BrandRS PRO
MYR134.58
Each
units
PT 100 6mm 100mm +200°C Stainless Steel - Cable 2m - -
RS Stock No. 762-1115
BrandRS PRO
MYR304.57
Each
units
K 4.5mm 2m +250°C - - Miniature Plug 2m IEC -
RS Stock No. 236-4283
BrandRS PRO
MYR674.70
Each
units
PT 100 12.7mm 75mm +150°C Stainless Steel - Cable Gland - - -
RS Stock No. 611-7823
BrandRS PRO
MYR68.04
Each
units
PT 100 2.8mm 15mm +650°C Platinum - Solder - - 0.4 s
RS Stock No. 219-4387
BrandRS PRO
MYR110.79
Each
units
K 3mm 500mm +1100°C 316 Stainless Steel - Cable 100mm IEC -
RS Stock No. 363-0323
BrandRS PRO
MYR43.47
Each
units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC -