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Rare Metal Thermocouple

Generally, precious metal (platinum) thermocouples are most stable with high temperature in comparison with base metal type thermocouples.

Type:  R,S,B.
Element Dia. (in mm):  0.12, 0.15, 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, other size on demand.
Sheath Material:  Recrystallized Alumina Ceramic(C-799), 610, Inconel, Silicon Carbide etc.
Configuration: Simplex / Duplex.

TYPE ‘R’ Thermocouple

Type R thermocouples are recommended for continuous use in Oxidizing or inert atmosphere at temperature up to 1400°C intermittently up to 1600°C. They should not be used in reducing atmosphere. These are available in standard wire diameters of 0.33 or 0.45mm.

TYPE ‘S’ Thermocouple

Recommended for almost the same application as type R.

TYPE ‘B’ Thermocouple

This combination Platinum thermocouples is made from Platinum-Rhodium 30% and Platinum-Rhodium 6%. When they are compared to pure platinum thermocouples they sudder less from the effect of ' Rhodium Migration' and may be used at some what higher temperature, continuous operating temperature 1550°C upto 1800°C intermittently. 


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