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Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity) (Includes all amendments and changes 12/14/2021).Přeložit název
NORMA vydána dne 1.11.2021
Označení normy: ASTM D7042-21a
Datum vydání normy: 1.11.2021
Kód zboží: NS-1044321
Počet stran: 14
Přibližná hmotnost: 42 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
critical viscosity, density, dynamic viscosity, kinematic viscosity, Stabinger viscometer, temperature scanning, viscosity, viscosity index,, ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)
|Significance and Use|
5.1Many petroleum products, and some non-petroleum materials, are used as lubricants and the correct operation of the equipment depends upon the appropriate viscosity of the liquid being used. In addition, the viscosity of many petroleum fuels is important for the estimation of optimum storage, handling, and operational conditions. Thus, the accurate determination of viscosity is essential to many product specifications.
5.2Density is a fundamental physical property that can be used in conjunction with other properties to characterize both the light and heavy fractions of petroleum and petroleum products.
5.3Determination of the density or relative density of petroleum and its products is necessary for the conversion of measured volumes to volumes at the standard temperature of 15C.
1.1This test method covers and specifies a procedure for the concurrent measurement of both the dynamic viscosity, ?, and the density, ?, of liquid petroleum products and crude oils, both transparent and opaque. The kinematic viscosity, ?, can be obtained by dividing the dynamic viscosity, ?, by the density, ?, obtained at the same test temperature.
1.2The 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).
1.3The precision has only been determined for those materials, viscosity ranges, density ranges, and temperatures as indicated in Section 15 on Precision and Bias. The test method can be applied to a wider range of materials, viscosity, density, and temperature. For materials not listed in Section 15 on Precision and Bias, the precision and bias may not be applicable.
1.4The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5This 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, health, and environmental practices and to determine the applicability of regulatory limitations prior to use.
1.6This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
|2. Referenced Documents|
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