The measurement uncertainty of every digital Si sensor Si-RS485TC-XX is now class A as per IEC 61724-1 as well as every Si-mV-85-Pt100(0) in case an external temperature compensation in the datalogging is done.
Measurement uncertainty of all other Si sensors are class B as per IEC 61724-1.
Due to continuous optimization of our production and especially of the calibration we were able to reduce the measurement uncertainty of our Si sensors significantly.
Please have a look at the attached data sheet with more information about the measurement uncertainty and a documentation regarding the standards.