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    What is a Thermocouple?

    A thermocouple is essentially a temperature sensor (a device used for temperature measurement). It is made up of two wires of different metals that, when joined together, create an electrical junction known as a measuring junction.

    When the temperature changes at the junction, it creates a voltage that can be interpreted to read the temperature, also known as the Seebeck effect. You can read more about these tools in our bespoke Thermocouples Guide.

    Types of thermocouples

    There are a wide range of thermocouple types 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 also include:

    • Type J
    • Type K
    • Type L
    • Type T

    The letters refer to the type of materials used which indicates what temperature they are usable at. For example, J-Type 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 popular choice and they are a robust, reliable and affordable solution.

    What are Thermocouples used for?

    They can be used in many applications, both domestic and industrial. Some examples include:

    • Thermostats
    • Hospital
    • Thermometers
    • Vehicle Diagnostics
    • Boiler/Heating
    • Sensors
    • Oven Safety Features
    • Food Thermometers

    Browse the broad range of Thermocouples RS have to offer and order today for next day delivery.

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