ASTM D7777-13
(Test Method)Standard Test Method for Density, Relative Density, or API Gravity of Liquid Petroleum by Portable Digital Density Meter
Standard Test Method for Density, Relative Density, or API Gravity of Liquid Petroleum by Portable Digital Density Meter
SIGNIFICANCE AND USE
5.1 The density, relative density, or API gravity of petroleum products are important quality indicators and are used in quantity calculations or to satisfy application, transportation, storage, and regulatory requirements.
5.2 This test method should not be used to determine density for custody transfer quantity calculations, particularly where mass or weight is the unit of quantity measurement. Test Method D4052 is appropriate for these applications.
SCOPE
1.1 This test method covers the determination of the density, relative density, or API gravity of liquid petroleum products using portable digital density meters at test temperatures between 0 and 40°C (32 to 104°F). Its application is restricted to samples with a dry vapor pressure equivalent up to 80 kPa (11.6 psi) and a viscosity below 100 mm2/s (cSt) at the test temperature.
1.2 This test method is suitable for determining the density to the nearest 1 kg/m3. To determine the density to the nearest 0.1 kg/m3, use Test Method D4052.
1.3 This test method is easily calibrated and primarily suitable for field applications. It is important for the user to know and understand the electrical classification of the area in which the analyzer is to be used and to select an analyzer appropriate for that classification.
1.4 Test Methods D287, D1298, and D6822 are used in field applications. This test method provides an alternative field method that is easily calibrated and does not pose the hazard of hydrometer glass breakage present in current field methods.
1.5 Portable digital density meters measure the density and temperature of the filled-in sample at the sample temperature. The measured density and temperature are automatically converted into:Density at 15°C / density at 60°FRelative density 15°C/15°C / relative density 60°F/60°F API gravity 15°C / API gravity 60°F
by the instrument using the calculation routines for Generalized Products as defined in Guide D1250.
1.6 If the density meter does not have in-built software to calculate the density at the reference temperature, this is calculated from the observed density at test temperature using the Petroleum Measurement Tables.
1.7 The accepted units of measure for density are kilograms per cubic metre (SI unit) or grams per cubic centimetre. Values in SI units are to be regarded as the standard. Values in parentheses are for information only. Both SI and customary units have been rounded; they may not be exactly equivalent.
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Designation: D7777 − 13
Designation 559/12
Standard Test Method for
Density, Relative Density, or API Gravity of Liquid Petroleum
1
by Portable Digital Density Meter
This standard is issued under the fixed designation D7777; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.6 If the density meter does not have in-built software to
calculate the density at the reference temperature, this is
1.1 Thistestmethodcoversthedeterminationofthedensity,
calculated from the observed density at test temperature using
relative density, or API gravity of liquid petroleum products
the Petroleum Measurement Tables.
using portable digital density meters at test temperatures
1.7 The accepted units of measure for density are kilograms
between 0 and 40°C (32 to 104°F). Its application is restricted
to samples with a dry vapor pressure equivalent up to 80 kPa per cubic metre (SI unit) or grams per cubic centimetre.Values
2
in SI units are to be regarded as the standard. Values in
(11.6 psi) and a viscosity below 100 mm /s (cSt) at the test
parentheses are for information only. Both SI and customary
temperature.
units have been rounded; they may not be exactly equivalent.
1.2 This test method is suitable for determining the density
3
1.8 This standard does not purport to address all of the
to the nearest 1 kg/m . To determine the density to the nearest
3
safety concerns, if any, associated with its use. It is the
0.1 kg/m , use Test Method D4052.
responsibility of the user of this standard to establish appro-
1.3 This test method is easily calibrated and primarily
priate safety and health practices and determine the applica-
suitable for field applications. It is important for the user to
bility of regulatory limitations prior to use.
know and understand the electrical classification of the area in
2. Referenced Documents
which the analyzer is to be used and to select an analyzer
2
appropriate for that classification.
2.1 ASTM Standards:
D287 Test Method for API Gravity of Crude Petroleum and
1.4 TestMethodsD287,D1298,andD6822areusedinfield
Petroleum Products (Hydrometer Method)
applications. This test method provides an alternative field
D1193 Specification for Reagent Water
method that is easily calibrated and does not pose the hazard of
D1250 Guide for Use of the Petroleum Measurement Tables
hydrometer glass breakage present in current field methods.
D1298 Test Method for Density, Relative Density, or API
1.5 Portable digital density meters measure the density and
Gravity of Crude Petroleum and Liquid Petroleum Prod-
temperature of the filled-in sample at the sample temperature.
ucts by Hydrometer Method
The measured density and temperature are automatically con-
D4052 Test Method for Density, Relative Density, and API
verted into:
Gravity of Liquids by Digital Density Meter
Density at 15°C / density at 60°F
D4057 Practice for Manual Sampling of Petroleum and
Relative density 15°C/15°C / relative density 60°F/60°F
Petroleum Products
API gravity 15°C / API gravity 60°F
D4177 Practice for Automatic Sampling of Petroleum and
by the instrument using the calculation routines for Gener-
Petroleum Products
alized Products as defined in Guide D1250.
D6822 Test Method for Density, Relative Density, and API
Gravity of Crude Petroleum and Liquid Petroleum Prod-
ucts by Thermohydrometer Method
1 3
This test method is under the jurisdiction of ASTM Committee D02 on
2.2 Energy Institute Standards:
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
IP 475 Petroleum Liquids – Manual Sampling
D02.04.0D on Physical and Chemical Methods.
Current edition approved May 1, 2013. Published May 2013. Originally
2
approved in 2012. Last previous edition approved in 2012 as D7777 –12. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI:10.1520/D7777–13. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
This standard has been developed through the cooperative effort betweenASTM Standards volume information, refer to the standard’s Document Summary page on
International and the Energy Institute, London. The EI and ASTM International the ASTM website.
3
logos imply that the ASTM International and EI standards are technically Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR,
equivalent, but does not imply that both standards are editorially identical. U.K., http://www.energyinst.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7777 − 12 D7777 − 13
Designation 559/12
Standard Test Method for
Density, Relative Density, or API Gravity of Liquid Petroleum
1
by Portable Digital Density Meter
This standard is issued under the fixed designation D7777; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This test method covers the determination of the density, relative density, or API gravity of liquid petroleum products using
portable digital density meters at test temperatures between 0 and 40°C (32 to 104°F). Its application is restricted to samples with
2
a dry vapor pressure equivalent up to 80 kPa (11.6 psi) and a viscosity below 100 mm /s (cSt) at the test temperature.
3
1.2 This test method is suitable for determining the density to the nearest 1 kg/m . To determine the density to the nearest 0.1
3
kg/m , use Test Method D4052.
1.3 This test method is easily calibrated and primarily suitable for field applications. It is important for the user to know and
understand the electrical classification of the area in which the analyzer is to be used and to select an analyzer appropriate for that
classification.
1.4 Test Methods D287, D1298and, D1298and D6822 are used in field applications. This test method provides an alternative
field method that is easily calibrated and does not pose the hazard and breakage of of hydrometer glass breakage present in current
field methods.
1.5 Portable digital density meters measure the density and temperature of the filled-in sample at the sample temperature. The
measured density and temperature are automatically converted into:
Density at 15°C / density at 60°F
Relative density 15°C/15°C / relative density 60°F/60°F
API gravity 15°C / API gravity 60°F
by the instrument using the calculation routines for Generalized Products as defined in Guide D1250.
1.6 If the density meter does not have in-built software to calculate the density at the reference temperature, this is calculated
from the observed density at test temperature using the Petroleum Measurement Tables.
1.7 The accepted units of measure for density are kilograms per cubic metre (SI unit) or grams per cubic centimetre. Values in
SI units are to be regarded as the standard. Values in parentheses are for information only. Both SI and customary units have been
rounded; they may not be exactly equivalent.
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D287 Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
D1193 Specification for Reagent Water
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.04.0D
on Physical and Chemical Methods.
Current edition approved Jan. 1, 2012May 1, 2013. Published April 2012May 2013. DOI:10.1520/D7777–12.Originally approved in 2012. Last previous edition approved
in 2012 as D7777 –12. DOI:10.1520/D7777–13.
This standard has been developed through the cooperative effort between ASTM International and the Energy Institute, London. The EI and ASTM International logos
imply that the ASTM International and EI standards are technically equivalent, but does not imply that both standards are editorially identical.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7777 − 13
D1250 Guide for Use of the Petroleum Measurement Tables
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4057 Practi
...
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