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 Series Termination Type Cable Length Standards Met Response Time Calibrated
RS Stock No. 362-9935
BrandRS PRO
£37.72
Each
Units
PT 100 3mm 150mm +250°C Stainless Steel - Cable 1m - - -
RS Stock No. 813-834
BrandRS PRO
£25.90
Each
Units
NTC - - +70°C - - - - - - -
RS Stock No. 363-0323
BrandRS PRO
£6.48
Each
Units
K 1/0.2mm 1m +250°C - - Miniature Plug 1m IEC - -
RS Stock No. 158-985
BrandRS PRO
£25.08
Each
Units
PT 100 3mm 100mm +200°C Stainless Steel - Lead Wire 1m - - -
RS Stock No. 611-7801
BrandRS PRO
£2.52
Each
Units
PT 100 2mm 5mm +500°C Platinum - Solder - - 0.1 s -
RS Stock No. 813-862
BrandRS PRO
£30.34
Each
Units
PT 100 - - +70°C - - - - - - -
RS Stock No. 455-4040
BrandRS PRO
£50.61
Each
Units
PT 100 6mm 150mm +450°C Stainless Steel - Connection Head - - - -
RS Stock No. 219-4365
BrandRS PRO
£17.51
Each
Units
K 1.5mm 500mm +1100°C 316 Stainless Steel - Cable 100mm IEC - -
RS Stock No. 219-4545
BrandRS PRO
£18.21
Each
Units
K - 50mm +100°C - - Miniature Plug 2m IEC - -
RS Stock No. 219-4371
BrandRS PRO
£19.04
Each
Units
K 1.5mm 1m +1100°C Stainless Steel - Cable 100mm IEC - -
RS Stock No. 762-1143
BrandRS PRO
£30.90
Each
Units
PT 100 3mm 50mm +200°C Stainless Steel - Lead Wire 1m - - -
RS Stock No. 397-1270
BrandRS PRO
£23.08
Each
Units
K 3mm 250mm +1100°C Stainless Steel - Cable 1m IEC - -
RS Stock No. 397-1286
BrandRS PRO
£25.74
Each
Units
K 6mm 150mm +1100°C Stainless Steel - Cable 1m IEC - -
RS Stock No. 376-1477
BrandRS PRO
£15.36
Each
Units
PT 100 - - +60°C - - - - - - -
RS Stock No. 621-2164
BrandRS PRO
£17.256
Each (In a Pack of 5)
Units
T 2mm 1m +350°C Teflon PTFE - Cable 1m RoHS Compliant 0.5 s -
RS Stock No. 787-7822
BrandRS PRO
£15.82
Each
Units
K 1mm 150mm +750°C Inconel 600, Stainless Steel - Cable 100mm IEC - -
RS Stock No. 621-2215
BrandRS PRO
£19.80
Each
Units
J 6mm 175mm +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 285-649
BrandRS PRO
£68.13
Each
Units
PT 100 6mm 400mm +450°C Stainless Steel - Connection Head - - - -
RS Stock No. 813-828
BrandRS PRO
£18.50
Each
Units
NTC - - +110 °C, +40°C - - - - - - -
RS Stock No. 666-7362
BrandRS PRO
£5.02
Each
Units
PT 100 1.2mm 1.6mm +500°C Platinum - Solder - - 0.1 s -