The New Powder Rheometer
The GranuDrum instrument is an automatic powder flow measurement method based on the rotating drum principle.
![](https://altmann.com.br/wp-content/uploads/2021/02/granutools.png)
Granular Material Flow Analyzer
The New Powder Rheometer
The GranuDrum instrument is an automatic powder flow measurement method based on the rotating drum principle.
A horizontal cylinder with transparent side walls called a drum is half filled with the dust sample.
The drum rotates around its axis at an angular speed that varies from 2 rpm to 60 rpm.
A CCD camera takes many snapshots for each speed and the result is surprising and very accurate.