Primary Standards for Pressure Measurements

Abstract

The primary standards used for pressure measurements are measuring systems that can be metrologically characterized in a complete and independent way with reference only to the basic units of the S.I. system. When pressure is defined as force per unit area or as the height of a liquid column, pressure is, dimensionally, p = [M L ^{− 1} T ^{− 2} a primary pressure standard will thus involve the measurement of mass, length, and time.