Calibration of thermoelements
To ensure the accuracy of presenting the temperatures, it is key, that the thermoelements, which we build in our products (calibrated) the accuracy of the review of temperature and the deviation of these.
Measuring is followed by NIST, or to be exact, to natural physical constants, which are suitable according to the ANSI/NCSL z540-1 and MIL-STD 45662A.