AIR-SATURATED WATER;
CALIBRATION;
DENSITY OF WATER;
ISOTHERMAL COMPRESSIBILITY;
ITS-90;
VOLUMETRIC STANDARDS;
D O I:
10.6028/jres.097.013
中图分类号:
TH7 [仪器、仪表];
学科分类号:
0804 ;
080401 ;
081102 ;
摘要:
A new formulation of the density of air-saturated water as a function of temperature on the 1990 International Temperature Scale (ITS-90) is presented. Also, a new equation for calculating isothermal compressibility as a function of temperature on ITS-90 was developed. The equations are to be used to calculate the density of water, in the temperature range 5 to 40-degrees-C on ITS-90, used in the gravimetric determination of the volume of volumetric standards.