Iii.2 Sample Trough - Brookfield PFT Powder Flow Tester Operating Instructions Manual

Moisture in the sample is one of the primary factors to be aware of when working with powders
because it can have a serious impact in making the powder more cohesive, and therefore
less free-flowing. The potential for the powder to take on moisture (either by adsorption or
absorption) is a factor that can affect test results. The Powder Flow Tester has the optional
capability to accommodate a humidity sensor (Part No. PFT-607Y) which plugs into the back
of the instrument.
Temperature may have some impact, but certainly plays less of a factor compared to humidity.
The Powder Flow Tester has the optional capability to accommodate a temperature sensor (Part
No. DVP-94Y) which also plugs into the back of the instrument.
Consider all environmental issues in your test area before proceeding with your test plan.

III.2 Sample Trough

There are two sizes of Troughs available for use with the PFT: The Standard Trough and the
Small Sample Volume Trough.
Figure III-2 shows the Standard Sample Trough (Part No. PFT-400) which comes with the PFT.
The trough is made of aluminum and is of annular shape for containment of sample. In the
bottom of the trough is a Perforated Screen (Part No. PFT-440) which holds the sample in place
so that the powder particles on the bottom do not slide on the smooth metal surface when the
trough rotates.
When the Standard Trough is filled to level, it holds 230 cc of sample material. When used with
the Standard Vane Lid, the additional volume required for the Lid increases the total sample size
to 263 cc of material.
The Small Sample Volume Trough (Part No. PFT-405) is of the same material as the standard
trough. The Small Trough requires 38 cc of sample material when filled to level. When used
with the Small Vane Lid, the total sample size increases to 43 cc.
AMETEK Brookfield
Figure III-2: Sample Trough
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Perforated
Screen
Manual No. M09-1200-F1016