The sedimentometer-software USSWin is designed for processing measurements with Topas US-Sedimentometer USS 791. The grain size determination of grit is carried out by sedimentation analysis by means of a US-sedimentometer. The measuring principle is based on determining the time necessary for sedimentation of defined sample volumina in a collecting tube. For calculation of theoretical grain diameters Stoke’s law is used.
USSWin is a user-friendly software, able to communicate with one or more Topas-US-sedimentometers. The program incorporates manaegment of device parameters and particle standards, takeover and analysis of raw data from other devices or saved measurement data as well as comfortable print outs of test charts.
For determining of grain size distribution following parameters are evaluated:
- Size of first grain that reaches the bottom (only for P-standards)
- Grain size for that time where 3% of the sample volume are deposited
- Mean grain size for that time where 50% of the sample volume are deposited
- Mean grain size for that time where 95% of the sample volume are deposited