Temperature - TC Type K (NiCr-Ni) Measuring range -50 to +400 °C Accuracy Class 2 ¹? Reaction time 5 s 1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K), Class 2 to -40 to +1200 °C (Type K), Class 3 to -200 to +40 °C (Type K). General technical data Length probe shaft 1,500 mm Diameter probe shaft 1.5 mm