Hello!
Trying to measure the PSD of a fine powder (0.1-20µm), using Malvern Mastersizer 3000 coupled with Aero S dry dispersion unit, the Feed rate achieved was randomly lower than the Feed rate demand (e.g., 39% instead 45%). The event is repeatable. The flowability of the material appears to be good, however, there was some deposit formed on the venturi tubing.
It never occurs with a coarser non-sticky powder, which would suggest that it could be related to the vacuum. However, the error displayed is related to the Feed Rate.
Have you ever experienced this issue and what would be the explanation?
Thank you!
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