The Highest Temperature Thermocouples are Type C (Tungsten Rhenium) and Type B, R or S (Platinum Rodium) with capabilities in the 1832°F (1000°C) to 4200°F (2315°C) Temperature Range.The Highest Temperature Thermocouples are Type C (Tungsten Rhenium) and Type B, R or S (Platinum Rodium) with capabilities in the 1832°F (1000°C) to 4200°F (2315°C) Temperature Range.