To process this page used the WSP function "wspR3PTR0": density in IF-97 region 3 [kg/m3] as function of pressure p [Pa], temperature t [K], initial density r0 [kg/m3].
Function used the Newton method with initial estimate for density to calculate the density. Used for unification of the functions in all IF-97 regions. Since at some stages the function use iterations, to speed up calculations you may vary relative precision for internal iterations (functions wspGETTOLERANCE and wspSETTOLERANCE).
WSP is a registered trademark of Konstantin Orlov.
Copyright (c) Konstantin Orlov, 1999-2010.
Copyright (c) Konstantin A. Orlov, 1999-2010.