New Expressions of Uncertainties for Humidity Calibrations at the NationalInstitute of Standards and Technology

摘要

Beginning January 1, 1994, the National Institute of Standards and Technology(NIST) requires all calibration reports to state the uncertainties according to the new policy. Reference is to be made to some published document. Uncertainties of calibration results are expressed using the method described in the 'Guide to the Expression of Uncertainty in Measurement' (NIST Technical Note 1297). This report explains how each component of the combined standard uncertainty was determined for providing the expanded uncertainties of humidity parameters.