Overview

Made from the finest platinum and platinum-rhodium alloy, FLuke 5650 type R thermocouples and type S thermocouples cover a temperature range of 0 °C to 1450 °C with uncertainties as good as 0.15 °C over most of that range.
With four different models for each type, we have the type R thermocouple and type S thermocouple to fit your application. The measuring junction of both the 5649 and the 5650 is encased in a 0.25-inch (6.35 mm) alumina sheath that can be ordered in lengths of 20 or 25 inches (50.8 or 63.5 cm) to fit the specific requirements of your application. A reference, or “cold," junction may also be ordered. The reference junction uses a stainless steel sheath and is 8.25 inches long (21 cm) by 0.188 inches in diameter (4.8 mm). The thin diameter minimizes the immersion depth needed, but the extra length ensures you can get all the immersion you like.