Type R thermocouple wire, Pt13%Rh-Pt

Type R thermocouples are designed for very high-temperature applications and are often preferred over Type S due to their slightly higher output and improved stability. These thermocouples are also used in lower temperature applications because of their high accuracy and stability.

Like type S, type R thermocouples are suitable for continuous use in oxidizing or inert gas atmospheres, with an operating temperature limit of up to 1600°C. However, users should be cautious of embrittlement due to contamination.

Are you in need of a complete sensor rather than just wire?

Visit our high-temperature thermocouple page. On this page, complete assemblies are explained, and through our brochure, you can directly configure one.

In short about type R wire;

  • available in diameters ranging from 0.10 mm to 1.0 mm
  • provided in IEC 60584 Class 1
  • supplied with a calibration certificate
  • produced in EU with EU sourced materials
  • can be used when high accuracy is required
  • has a higher output and improved stability over a type S thermocouple
  • can be used in continuous oxidizing and inert atmospheres

Our standard type R wire items

Thermocouple wire typeClassOutside Diameter in mmDelivery time
Type R wireClass 10.045 mm12 daysSend inquiry
Type R wireClass 10.20 mm12 daysSend inquiry
Type R wireClass 10.30 mm12 daysSend inquiry
Type R wireClass 10.35 mm12 daysSend inquiry
Type R wireClass 10.40 mm12 daysSend inquiry
Type R wireClass 10.50 mm12 daysSend inquiry
Type R wireClass 10.80 mm12 daysSend inquiry
Delivery times stated are workingsdays with delivery to Kamet’s warehouse

Please contact us if you need different diameters. We can supply more custom made diameters (combinations) than stated above.

Operating temperature 

Please note that these ranges are given as indicative values and vary per diameter.

  • Maximum long term continuous operating temperature: up to 1300°C
  • Short term use: up to 1600°C

Chemical composition

RP ( + )8713
RN (-)100

Physical properties

Density (g/cm3)21.4519.6
Melting point (°C)17711865
Resistivity at 0 °C (μΩ*cm)  9.8119
Tensile strength(Mpa)  156.8343
Coefficient of heat conductivity(W/M*K)  7130

Environmental and industrial usage

These thermocouples are essential in sectors where high-temperature accuracy is crucial. Key industries include aerospace for jet engine control, chemical industries for sensitive technologies, nuclear energy, glass manufacturing for softening processes, pyrometallurgy, automotive industry for safety sensors, military, and various electrical applications.

Furthermore, they are well-suited for vacuum furnaces and recommended for use in oxidizing atmospheres but are prone to contamination, thus requiring protective measures.

These thermocouples are also extensively used in the medical field, as well as in scientific and research equipment, for precise temperature measurement across a range of devices.

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Do you have any further questions? Please let us know and our specialists will be happy to advise you.

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