Type R thermocouples are made of Platinum / Rhodium Thermocouple Alloy Pt87 / Rh13 and are used when chemical inertness and stability at high temperatures, up to 1750°C, are required.
The key properties of Platinum / Rhodium Thermocouple Alloy Pt87 / Rh13 are tabulated below.
Table 1. Key properties
|Temperature coefficient ( K-1 )
|Electrical resistivity ( µOhm.cm )
|Elongation at break ( % )
|Tensile strength ( MPa )
|Density ( g.cm-3 )
|Melting point ( °C )
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