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

Read more Read less


Viewing 1 - 5 of 5 products
Results per page
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. 344-1000
Mfr. Part No.330114-506
PT 100 6mm 100mm +450°C Stainless Steel - Cable 2m - - -
RS Stock No. 344-1139
Mfr. Part No.915 461
PT 100 - - +70°C - - Cable Gland - - - -
RS Stock No. 344-1022
Mfr. Part No.330114-511
PT 100 6mm 350mm +450°C Stainless Steel - Cable 2m - - -
RS Stock No. 344-0990
Mfr. Part No.330112-509
PT 100 3mm 250mm +450°C Stainless Steel - Cable 2m - - -
RS Stock No. 344-1016
Mfr. Part No.330114-508
PT 100 6mm 200mm +450°C Stainless Steel - Cable 2m - - -