Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

Importancia y uso:

5.1 Accurate determination of the density, relative density (specific gravity), or API gravity of petroleum and its products is necessary for the conversion of measured volumes to volumes or masses, or both, at the standard reference temperatures of 15 °C or 60 °F during custody transfer.

5.2 This procedure is most suitable for determining the density, relative density (specific gravity), or API gravity of low viscosity transparent liquids. This procedure can also be used for viscous liquids by allowing sufficient time for the hydrometer to reach temperature equilibrium, and for opaque liquids by employing a suitable meniscus correction. Additionally for both transparent and opaque fluids the readings shall be corrected for the thermal glass expansion effect and alternative calibration temperature effects before correcting to the reference temperature.

5.3 When used in connection with bulk oil measurements, volume correction errors are minimized by observing the hydrometer reading at a temperature close to that of the bulk oil temperature.

5.4 Density, relative density, or API gravity is a factor governing the quality and pricing of crude petroleum. However, this property of petroleum is an uncertain indication of its quality unless correlated with other properties.

5.5 Density is an important quality indicator for automotive, aviation and marine fuels, where it affects storage, handling and combustion.

Subcomité:

D02.02

Referida por:

D4790-25, D6560-22, D1160-24, D5002-22, D7371-14R22, D1903-08R17, D6560-22, D1160-24, D3227-24, D5002-22, D5372-25, D3227-24, D5599-22, D7666-12R19, D3142_D3142M-17, D0396-24, F0715-07R23, D2880-23, D4629-24, D5599-22, D4800-94R23, F0631-15R20, D6560-22, D4815-22, D7862-21, D8150-22, D7665-22, D7861-24, D6136_D6136M-15R21, D7041-16R21, D6469-24, D3827-92R20, D5453-24, F2084_F2084M-01R24, D0287-22, D7547-23, D5501-20R24E01, D8180-23, D5769-22, D0976-21E01, D6710-21, D1655-24B, D6224-23, D5222-23, D5769-22, D7620-10R20, D5845-21, D5002-22, D4806-25, D8029-23, D4052-22, D6615-22, D3120-08R19, D7806-20, D5845-21, D4054-25, D5501-20R24E01, D0613-25, D8324-21, D8274-24, D0976-21E01, D2140-24, D2779-92R20, D4056-21, D8188-23, D5453-24, D2226-93R22, D0910-24, D0287-22, D4293-22, D4552_D4552M-20R25, D3487-25, D5453-24, D1655-24B, D6227-24A, D4052-22, B0963-24, D4629-24, D6469-24, D7416-24, D7875-24, D5986-23, D4737-21, D8291-25, D4052-22, D5845-21, D4815-22, D7863-22, D0287-22, D3288_D3288M-20, D2501-24, D7223-21, D3343-22, D6074-15R22, D5501-20R24E01, D5453-24, D1655-24B, D0613-25, F2709-19, D4806-25, D6277-07R22, D7797-23, D8147-24, D4652-20, D7777-24, D0976-21E01, D7963-22, D3227-24, D6871-17, D6158-23, D7719-21A, F3350-18R24, D5622-24, D8290-22, D4737-21, D7371-14R22, D4806-25, D6448-24, D1160-24, D8323-24, D0613-25, E0126-19R24, D5599-22, D6823-24, D4737-21, D7861-24, D4629-24, D8434-21, D8240-22E01, D5580-21, D3338_D3338M-20A, D6822-24, D3343-22, D3338_D3338M-20A, D3338_D3338M-20A, D4868-17, D7618-13R21, D7566-24D, D7960-21, D8256-24B, D6304-20, D4815-22, D3338_D3338M-20A, D4868-17, D6201-19A, D6923-23, D7826-25A, D5769-22, D4814-25, D6750-23, D2225-20, D0117-22, D5580-21, D5580-21, D3120-08R19, D6304-20, D8322-20, D6304-20, D5236-25, D6593-18E01, D4529-24, D4529-24, D2892-25

Volúmen:

05.01

Número ICS:

75.040 (Crude petroleum), 75.080 (Petroleum products in general)

Palabras clave:

API gravity; crude petroleum; density; hydrometer; Petroleum Measurement Tables; petroleum products; relative density; specific gravity;