Determination of instability of primary and secondary standards of unit volume and volumetric gas flow

Abstract

The nomenclature of methods of determination of instability of primary and secondary standards of units of volume and volume expense of gas is considered in the paper. It is defined that the evaluation of instability of state standards according to the data of periodic international collations is more effective, than evaluation on the basis of researches of standard in time, as allows seeing the state of exactness of reproducing of unit of physical size by comparison to the national standards of other countries.