DIN EN ISO 3993-1995 液化石油气和轻质烃类.密度或相对密度的测定.压力液体比重测定法 (ISO 3993:1984); 德文版本 EN ISO 3993:1995
Liquefied petroleum gas and light hydrocarbons - Determination of density or relative density - Pressure hydrometer method (ISO 3993:1984); German version EN ISO 3993:1995
The document specifies a method for the determination of density or relative density of liquefied petroleum gases and other light hydrocarbons. The prescribed apparatus shall not be used for materials having gauge vapour pressures higher than 1,4 MPa (14 bar) (absolute vapour pressure 1,5 MPa) at the test temperature.