Thermocouples

A thermocouple is essentially a temperature sensor (a device that 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 that 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 that insulate the wires to prolong their life.Thermocouples are ideal tools for the measurement of high temperatures and are a robust yet affordable solution.What are Thermocouples used for?ThermostatsHospital thermometersVehicle diagnosticsBoiler/heating sensorsOven safety featuresFood thermometersIndustrial 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 Accessory Type
RS Stock No. 363-0250
BrandRS PRO
MYR41.34
Each
units
K 1/0.2mm - +250°C - -75°C Miniature Plug 1m IEC - -
RS Stock No. 397-1264
BrandRS PRO
MYR147.43
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 1m IEC - -
RS Stock No. 621-2489
BrandRS PRO
MYR305.77
Each
units
K 6mm 625mm +1100°C 310 Stainless Steel - Connection Head - RoHS Compliant 20 s -
RS Stock No. 787-7841
BrandRS PRO
MYR121.02
Each
units
K 1.5mm 1.5m +1100°C Inconel 600, Stainless Steel - Cable 100mm IEC - -
RS Stock No. 397-1832
BrandRS PRO
MYR164.30
Each
units
PT 100 6mm 150mm +200°C Stainless Steel - Cable 1m - - -
RS Stock No. 397-1488
BrandRS PRO
MYR120.58
Each
units
K 3mm 150mm +1100°C Stainless Steel - Miniature Plug - IEC - -
RS Stock No. 236-4255
BrandRS PRO
MYR258.94
Each
units
K 6mm - +250°C Stainless Steel - Miniature Plug 1m IEC - -
RS Stock No. 397-1270
BrandRS PRO
MYR158.50
Each
units
K 3mm 250mm +1100°C Stainless Steel - Cable 1m IEC - -
RS Stock No. 824-0644
BrandRS PRO
MYR194.15
Each
units
K 1mm 150mm +800°C Inconel 600 - Cable 1m RoHS Compliant 7 s -
RS Stock No. 621-2170
BrandRS PRO
MYR43.64
Each
units
K 0.3mm - +400°C - - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 621-2271
BrandRS PRO
MYR98.20
Each
units
K 6mm 2m +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 363-0266
BrandRS PRO
MYR41.47
Each
units
T 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC - -
RS Stock No. 259-328
BrandRS PRO
MYR129.08
Each
units
J 6mm 170mm +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 373-0372
BrandRS PRO
MYR166.93
Each
units
PT 100 6mm 100mm +200°C Stainless Steel - Cable 2m - - -
RS Stock No. 219-4725
BrandRS PRO
MYR115.15
Each
units
J 4.5mm 150mm +350°C Stainless Steel - Cable 2m IEC - -
RS Stock No. 762-1115
BrandRS PRO
MYR329.12
Each
units
K 4.5mm 2m +250°C - - Miniature Plug 2m IEC - -
RS Stock No. 236-4283
BrandRS PRO
MYR593.74
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
MYR119.75
Each
units
K 3mm 500mm +1100°C 316 Stainless Steel - Cable 100mm IEC - -
RS Stock No. 896-8395
BrandRS PRO
MYR101.28
Each
units
PT 100 5mm 50mm +100°C Stainless Steel - Cable 1.5m - - -