Aero-Flow™ automated powder flowability

Fig. 9 Descriptive drawing of a rotating drum avalanche test device. This device is commercially available as the TSI Aero-Flow automated powder flowability analyzer. The top pictures the device. The progress of powder avalanche shows the position of the powder in the drum as the drum is rotated and the lower voltage output shows the output of the device during each drum rotation. (From Ref. °. )...

Fig. 10 Rotating drum avalanche data from a TSI Aero-Flow automated powder flowability analyzer. The first frame shows the data output for lactose, which passed through a 38-pm screen (less than 38-pm). The output data for the original lactose sample (notscreened) is shown in the middle frame. The last frame shows the flow data for the lactose sample remaining on the 38- j,m screen (greater than 38-pm). (From Ref l)...

API also offers an automated powder flowability analyzer (Fig. 11.8b) which features real time, low pressure, non intrusive powder flow analysis. It is being used both in the laboratory and for process control. The Aero-Flow utilizes the deterministic chaos theory [B.59] to measure the time intervals of a series of catastrophic avalanches. 

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