![]() Unlike the Saybolt and Redwood scales, the Engler scale is based on comparing the flow of the substance being tested to the flow of another substance - water. Kinematic viscosity in SSU versus dynamic or absolute viscosity can be expressed asī = 4.632 for temperature 100 oF (37.8 oC)ī = 4.664 for temperature 210 oF (98.9 oC) μ = dynamic or absolute viscosity (cP) SG = Specific Gravity ν centiStokes = kinematic viscosity (centiStokes)ĭegree Engler is used in Great Britain as a scale to measure kinematic viscosity. Saybolt Universal Seconds is also called the SSU number (Seconds Saybolt Universal) or SSF number (Saybolt Seconds Furol). This method has largely been replaced by the kinematic viscosity method. The efflux time is Saybolt Universal Seconds ( SUS) required for 60 milliliters of a petroleum product to flow through the calibrated orifice of a Saybolt Universal viscometer - under a carefully controlled temperature and as prescribed by test method ASTM D 88. Saybolt Universal Seconds (or SUS) is an alternative unit for measuring viscosity. Other Viscosity Units Saybolt Universal Seconds (or SUS, SSU) This is a free app that can be used offline on mobile devices. Related Mobile Apps from The Engineering ToolBox for a gas - the kinematic viscosity increases with higher temperature. ![]() for a liquid - the kinematic viscosity decreases with higher temperature.For a distillate fluid the reference temperature is 40 oC. In ISO 8217 the reference temperature for a residual fluid is 100 oC. ![]() The viscosity of a fluid is highly temperature dependent - and for dynamic or kinematic viscosity to be meaningful the reference temperature must be quoted.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |