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Standard Test Method for Determination of Dynamic Viscosity and Derived Kinematic Viscosity of Liquids by Oscillating Piston ViscometerTranslate name
STANDARD published on 1.1.2021
Designation standards: ASTM D7483-21
Publication date standards: 1.1.2021
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Category: Technical standards ASTM
dynamic viscosity, kinematic viscosity, oscillating piston, oscillating piston viscometer, viscosity,, ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)
|Significance and Use|
5.1?Many petroleum products, as well as non-petroleum materials, are used as lubricants for bearings, gears, compressor cylinders, hydraulic equipment, etc. Proper operation of this equipment depends upon the viscosity of these liquids.
5.2?Oscillating piston viscometers allow viscosity measurement of a broad range of materials including transparent, translucent and opaque liquids. The measurement principle and stainless steel construction makes the Oscillating Piston Viscometer resistant to damage and suitable for portable operations. The measurement itself is automatic and does not require an operator to time the oscillation of the piston. The electromagnetically driven piston mixes the sample while under test. The instrument requires a sample volume of less than 5 mL and typical solvent volume of less than 10 mL which minimizes cleanup effort and waste.
1.1?This test method covers the measurement of dynamic viscosity and derivation of kinematic viscosity of liquids, such as new and in-service lubricating oils, by means of an oscillating piston viscometer.
1.2?This test method is applicable to Newtonian and non-Newtonian liquids; however the precision statement was developed using Newtonian liquids.
1.3?The range of dynamic viscosity covered by this test method is from 0.2 mPa?s to 20 000 mPa?s (which is approximately the kinematic viscosity range of 0.2 mm2/s to 22 000 mm2/s for new oils) in the temperature range between 40 ?C to 190 ?C; however the precision has been determined only for new and used oils in the range of 34 mPa?s to 1150 mPa?s at 40 ?C, 5.7 mPa?s to 131 mPa?s at 100 ?C, and 46.5 mm2/s to 436 mm2/s at 40 ?C.
1.4?The values stated in SI units are to be regarded as 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6?This 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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