Standard Practice for Calibrating U-tube Density Cells over Large Ranges of Temperature and Pressure

Importancia y uso:

5.1 This practice covers a series of methods offered to aid users in calibrating U-tube density meters to provide a measure of density and an associated expanded uncertainty. The reference density, as obtained from either an equation of state (EOS) or CRM has an uncertainty that arises from the uncertainty of the measurements of temperature, pressure, and also the chemical purity of the substance studied (origin) or for that matter of the certified reference material. This uncertainty results in an additional uncertainty for the density of these samples. Because the measurements made with U-tube density meters are not absolute, the uncertainty with which the instrument calibration is determined is directly related to the uncertainty of the density obtained.

Subcomité:

D02.04.0D

Referida por:

D8188-23

Volúmen:

05.04

Número ICS:

17.060 (Measurement of volume, mass, density, viscosity), 75.180.30 (Volumetric equipment and measurements)

Palabras clave:

calibration; vibrating-U-tube density meter;