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. 872-2590
BrandRS PRO
MYR192.54
Each
units
K M8 Bolt 25mm +250°C Stainless Steel - Cable 2m IEC - -
RS Stock No. 813-862
BrandRS PRO
MYR176.84
Each
units
PT 100 - - +70°C - - - - - - -
RS Stock No. 285-633
BrandRS PRO
MYR367.87
Each
units
PT 100 6mm 200mm +450°C Stainless Steel - Connection Head - - - -
RS Stock No. 159-045
BrandRS PRO
MYR108.47
Each
units
K 3mm 500mm +800°C 316 Stainless Steel - Cable 100mm BS - -
RS Stock No. 151-271
BrandRS PRO
MYR227.22
Each
units
T 1.6mm 100mm +250°C Constantan, Copper - Cable 1.5m BS - -
RS Stock No. 621-2322
BrandRS PRO
MYR146.34
Each
units
K 40 → 50mm 2m +1100°C 316 Stainless Steel - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 455-3968
BrandRS PRO
MYR289.22
Each
units
PT 100 6mm 50mm +200°C Stainless Steel - Cable 2m - - -
RS Stock No. 813-828
BrandRS PRO
MYR107.84
Each
units
PT 100 - - +110 °C, +40°C - - - - - - -
RS Stock No. 457-3704
BrandRS PRO
MYR197.75
Each
units
PT 100 6mm 60mm +200°C Stainless Steel - Cable 2.5m - - -
RS Stock No. 621-2164
BrandRS PRO
MYR99.002
Each (In a Pack of 5)
units
T 2mm - +350°C Teflon PTFE - Cable 1m RoHS Compliant 5 s -
RS Stock No. 896-8402
BrandRS PRO
MYR215.36
Each
units
J 6mm 250mm +750°C Stainless Steel - Connection Head - RoHS Compliant <2 s -
RS Stock No. 409-4920
BrandRS PRO
MYR57.28
Each
units
K 1.2mm 1m +450°C Nickel Aluminium, Nickel Chrome - Miniature Plug 1m IEC 0.1 s -
RS Stock No. 787-7709
BrandRS PRO
MYR128.17
Each
units
K 1mm 500mm +1100°C Stainless Steel - Cable 1m IEC - -
RS Stock No. 228-7467
BrandRS PRO
MYR89.81
Each
units
K 3mm 150mm +1100°C Stainless Steel - Cable 100mm IEC - -
RS Stock No. 787-7822
BrandRS PRO
MYR90.53
Each
units
K 1mm 150mm +750°C Inconel 600, Stainless Steel - Cable 100mm IEC - -
RS Stock No. 621-2237
BrandRS PRO
MYR84.76
Each
units
J 0.2mm - +350°C Stainless Steel - Cable 2m RoHS Compliant 0.7 s -
RS Stock No. 847-1132
BrandRS PRO
MYR86.77
Each
units
K 1.5mm 150mm +1100°C Stainless Steel - Cable 100mm ANSI - -
RS Stock No. 237-1613
BrandRS PRO
MYR142.29
Each
units
PT 100 6mm 35mm +250°C Stainless Steel - Lead Wire 1m - - -
RS Stock No. 847-1043
BrandRS PRO
MYR148.52
Each
units
K 3mm 500mm +1100°C Stainless Steel - Cable 1m ANSI - -
RS Stock No. 814-0147
BrandRS PRO
MYR47.72
Each
units
K 1/0.3mm 1m +350°C - - Miniature Plug 1m ANSI - -