WHY DO A PRT CLIBRATION?
Calibrated sensors have inherently improved accuracy specifications over DIN spec sensors as seen in the graph. The colored graphs depict uncertainty as per accuracy class specification.
At 200 degrees Celsius these range from ±0.5C° to ±2.5C° compared to a calibrated sensor whose accuracy can be as low as ±0.03 to 0.05K°, K=2. This makes a SiGMA K2 sensor more accurate by a factor of 10.