What do the different accuracy classes for platinum temperature sensors mean?

Platinum temperature sensors are designated according to DIN EN 60751 with accuracy classes F 0.1 / F 0.15 / F 0.3, etc. F 0.15 corresponds to the former class A (±(0.15 + 0.002·|t|) °C), F 0.3 to class B (±(0.30 + 0.005·|t|) °C). F 0.1 stands for particularly high accuracy and corresponds approximately to the former 1/3 DIN B. For the end user, these classes indicate how precisely the sensor measures the actual temperature. The formulas can be used to determine the maximum deviation from the actual temperature.