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Roller Surface Thermocouple (Type 8)

General Purpose Thermocouples

For temperatures up to 250°C and rotating and linear speeds up to 275 metres per minute, Type 8 Roller Surface thermocouple sensors are suitable for use on calendar rolls, motor shafts and flat sheets of metal, plastic and textile surfaces with low abrasion resistance.

The assemblies are available with a long life, low friction spring loaded detection head incorporating thermocouple conductor types K, T, J, N, or E. They are supplied complete with a built in thermocouple socket, matching plug and mounting bar. Extension leads should be ordered separately. Spare replacement thermocouple cartridges are also available (order code S8). If further information is required please contact the company for our detailed technical bulletin.

Roller Surface Thermocouple Enquiry Form

1. Thermocouple Type
2. Optional Replacement Cartridge

3. Quantity Required

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If your enquiry is for more than one style of sensor, please email us with your requirements or use the box below



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Frequently Asked Questions

  • What is a thermocouple and how does it work?
    A thermocouple is a type of temperature sensor that generates a voltage when two different metals are joined at one end and exposed to a temperature difference between the "hot" junction (where the temperature is measured) and the "cold" junction (the reference point). This voltage is then measured to determine the temperature at the hot junction.
  • How do I choose the right thermocouple for my application?
    The ideal thermocouple depends on factors such as temperature range, accuracy, termination type, mounting requirements and environmental conditions. We offer a variety of thermocouples with different sheath materials, constructions, terminations, and temperature ratings to meet your needs. If you need specific advice, our engineers are happy to assist!
  • What is the maximum temperature rating of your thermocouples?
    Our thermocouples are designed to handle a wide range of temperatures with some mineral insulated thermocouples able to withstand temperatures up to 1400ºC and ceramic sheathed thermocouples going even higher to 1600ºC. Each product listing includes the maximum temperature rating, so you can choose the best thermocouple for your application.
1 Thermocouple Type Temperature Range (continuous) Temperature Range
(short term)
K Nickel Chromium vs
Nickel Aluminium
0°C to +1100°C -180°C to +1350°C
T Copper vs Constantan -185°C to +300°C -250°C to +400°C
J Iron vs Constantan +20°C to +700°C -180°C to +750°C
N Nicrosil vs Nisil 0°C to +1100°C -270°C to +1300°C
E Nickel Chromium vs Constantan 0°C to +800°C -40°C to +900°C
Temperature ranges refer to the thermocouple type.
The temperature range of the sensor may deviate from the above,
please refer to the product description for more details