Type R bare thermocouple wire
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.
High quality type R thermocouple bare wire
- Available in diameters ranging from 0.10 mm to 1.0 mm
- Provided in IEC 60584 Class 1
- Supplied with a calibration certificate
- Supplied with positive and negative leg
- 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
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.
The type R thermocouple wire can also be used in MI thermocouple cable. More about MI cable with type R thermocouple.
Specifications and physical properties
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 ( + ) = 87% Pt 13% Rh
- RN (-) = 100% Pt
Physical properties
| RN | RP | |
|---|---|---|
| Density (g/cm3) | 21.45 | 19.6 |
| Melting point (°C) | 1771 | 1865 |
| Resistivity at 0 °C (μΩ*cm) | 9.81 | 19 |
| Tensile strength(Mpa) | 156.8 | 343 |
| Coefficient of heat conductivity(W/M*K) | 71 | 30 |
Our standard type R wire
Please contact us if you need different diameters. We can supply more custom made diameters (combinations) than stated below.
Maybe a finished high temperature sensor better fits your needs. Discover more about our high temperature thermocouples with type R wire.
| Thermocouple | Class | Outside Diameter in mm | Delivery time | |
|---|---|---|---|---|
| Type R | Class 1 | 0.045 mm | 3 weeks | Send inquiry |
| Type R | Class 1 | 0.20 mm | 3 weeks | Send inquiry |
| Type R | Class 1 | 0.30 mm | 3 weeks | Send inquiry |
| Type R | Class 1 | 0.35 mm | 3 weeks | Send inquiry |
| Type R | Class 1 | 0.40 mm | 3 weeks | Send inquiry |
| Type R | Class 1 | 0.50 mm | 3 weeks | Send inquiry |
| Type R | Class 1 | 0.80 mm | 3 weeks | Send inquiry |
Delivery times stated are workingsdays with delivery to Kamet’s warehouse
How can we help you today?
Request a quotation for the wire and quantity you need for your project.
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