ASTM-D7042 2011

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D7042-11a Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)

Published By	Publication Date	Number of Pages
ASTM	2011	8

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Description

ASTM D7042-11a

Historical Standard: Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)

ASTM D7042

Scope

1.1 This test method covers and specifies a procedure for the concurrent measurement of both the dynamic viscosity, η, and the density, ρ, of liquid petroleum products and crude oils, both transparent and opaque. The kinematic viscosity, ν, can be obtained by dividing the dynamic viscosity, η, by the density, ρ, obtained at the same test temperature.

1.2 The result obtained from this test method is dependent upon the behavior of the sample and is intended for application to liquids for which primarily the shear stress and shear rate are proportional (Newtonian flow behavior).

1.3 While the precision has only been determined for base oils in the viscosity range from 2.05 to 456 mPa·s at 40°C and from 0.83 to 31.6 mPa·s at 100°C and in the density range from 0.82 to 0.92 g/cm³ at 15°C (see 15.5), the test method can be applied to a wider range of materials, viscosity, density, and temperature. For materials not listed in Precision and Bias (Section 15), the precision and bias may not be applicable.

1.4 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

1.5 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 to determine the applicability of regulatory limitations prior to use.

Keywords

density; dynamic viscosity; kinematic viscosity; Stabinger viscometer; viscosity; viscosity index; Dynamic viscosity; Kinematic viscosity; Liquid density; Stabinger viscometer

ICS Code

ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)

DOI: 10.1520/D7042-11A

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus FIG. 1
3	Reagents and Materials Sampling, Test Specimens, and Test Units Calibration and Verification FIG. 2
4	Adjustment Procedure TABLE 1
5	Cleaning of the Measuring Cells Calculation of Results Report Precision and Bias
6	Keywords A1. CALCULATION OF ACCEPTABLE TOLERANCE ZONE A1.1 A1.2 A1.3 A1.4 TABLE 2 TABLE 3
7	X1.1 X1.2 X2.1 X2.2 TABLE X1.1 TABLE X2.1

Additional information

Standard Title	D7042-11a Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)
Published Code	ASTM
Publication Date	2011
Pages Count	8