REALISATION OF PRIMARY PRESSURE MEASUREMENT SYSTEM

Wu Jian

Abstract

NMC recently established the primary deadweight pressure standards in the range from 10 kPa to 1 MPa. The primary standard includes two piston-cylinder (PC) units, the diameters of which derive the pressure values. While two other of the PC units serve as the reference in the higher range of 24 kPa to 10 MPa are traceable to the primary PC units through cross-floating measurement method. Together with a primary laser manometer and a hydraulic deadweight pressure standard, NMC realises the pressure measurement system from 1 Pa to 400 MPa. This paper describes the method of realisation of the pressure unit at NMC.

Keywords

pressure, primary standards, uncertainty evaluation

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IMEKO-WC-2012-TC16-O16.pdf

DOI

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IMEKO TC

TC16 - Pressure and Vacuum Measurement

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