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 thermocouplesThere 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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RS PRO PT100 RTD Sensor, 4mm Dia, 100mm Long, 4 Wire, Probe, Class B +250°C Max
VND1,404,460.64 -
RS PRO PT100 RTD Sensor, 5mm Dia, 35mm Long, 4 Wire, Probe, Class B +450°C Max
VND984,139.20 -
RS PRO PT100 RTD Sensor, 6mm Dia, 150mm Long, 4 Wire, Probe, Class B +450°C Max
VND2,880,861.28 -
RS PRO PT1000 RTD Sensor, 2mm Dia, Chip, +500°C Max
VND214,477.12 -
RS PRO RTD Sensor, +70°C Max
VND1,216,649.28 -
RS PRO RTD Sensor, +70°C Max
VND865,390.24 -
RS PRO RTD Sensor, 1mm Dia, 152mm Long, +750°C Max
VND602,953.12 -
RS PRO RTD Sensor, 6mm Dia, 150mm Long, G1/4, +850°C Max
VND6,573,973.12 -
RS PRO Temperature Probe
VND1,464,890.24 -
RS PRO Temperature Probe
VND1,464,890.24 -
RS PRO Temperature Probe
VND1,577,884.00 -
RS PRO Temperature Probe
VND1,719,270.08 -
RS PRO Thermocouple
VND315,768.64 -
RS PRO Thermocouple
VND241,910.24 -
RS PRO Type J Platinum Resistance Temperature Sensor 250mm Length, 6mm Diameter → +750°C
VND1,512,658.40 -
RS PRO Type J Thermocouple 0.3mm Diameter → +250°C
VND189,729.76 -
RS PRO Type J Thermocouple 0.3mm Length, 6.35mm Diameter → +200°C
VND783,090.88 -
RS PRO Type J Thermocouple 100mm Length, 4.76mm Diameter → +350°C
VND1,105,765.76 -
RS PRO Type J Thermocouple 10m Length, 1/0.2mm Diameter → +260°C
VND325,552.48 -
RS PRO Type J Thermocouple 13mm Length, 3.18mm Diameter → +350°C
VND845,822.56 -
RS PRO Type J Thermocouple 13mm Length, 4.76mm Diameter → +350°C
VND1,202,069.44 -
RS PRO Type J Thermocouple 13mm Length, 4mm Diameter → +350°C
VND1,194,971.36 -
RS PRO Type J Thermocouple 13mm Length, M8 Bolt Diameter → +250°C
VND1,198,616.32 -
RS PRO Type J Thermocouple 150mm Length, 1.5mm Diameter → +760°C
VND969,175.68