FprEN ISO 23581
石油产品及相关产品 运动粘度的测定 采用 Stabinger 型粘度计的方法 (ISO/FDIS 23581:2024)

Petroleum products and related products - Determination of kinematic viscosity - Method by Stabinger type viscometer (ISO/FDIS 23581:2024)

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标准号

FprEN ISO 23581

发布单位

欧洲标准化委员会

 

 

适用范围

This document specifies a procedure for the determination of kinematic viscosity (ν) by calculation from dynamic viscosity (η) and density (ρ) of both transparent and opaque liquid petroleum products and crude oils using the Stabinger type viscometer. The result obtained using the procedure described in this document depends on the rheological behaviour of the sample. This document is predominantly applicable to liquids whose shear stress and shear rate are proportional (Newtonian flow behaviour). If the viscosity changes significantly with the shear rate, comparison with other measuring methods is not possible except at similar shear rates. The precision has been determined only for the materials, density ranges and temperatures described in Clause 13. The test method may be applied to a wider range of viscosity, density, temperature and materials. The precision and bias may not be applicable for materials not listed in Clause 13.

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