AMETEK Brookfield Page 22
Manual No. M09-1200-F1016
III.3 Lid Selection
The PFT comes with two types of Lids of annular design as shown in Figure III.3. The bottom
side of the Lid is shown in each case; these surfaces make contact with the powder during the
test.
Vanes
Figure III-3: Bottom side of Vane Lid and Wall Friction Lid
The Standard Vane Lid (Part No. PFT-500) has 18 small compartments which trap the powder
particles and cause them to shear against the powder particles in the Trough. The Vane Lid is
made of 304 s/s and has a 15.25 cm (6-inch) outer diameter. The Small Vane Lid (Part No.
PFT-515) is similar in design and construction with a 12.7 cm (5-inch) outer diameter.
The Standard Wall Friction Lid (Part No. PFT-507) has a smooth bottom surface made of 304
s/s with 2B finish, which slides over the powder particles in the Trough during the test, thereby
measuring the friction of powder against the surface material of the Lid. The surface can be
made of other materials, depending on your preference; Mild steel (Part No. PFT-512) and Tivar
88 (Part No. PFT-513) are two other common options. The choice typically depends on the
material of construction that will be used in the storage bin, hopper or containment vessel that
stores the powder in your processing plant. Contact Brookfield or your authorized dealer for
alternative choices on the surface material of construction for the Wall Friction Lid. The Small
Wall Friction Lid (Part No PFT-516) is also available in Mild steel (Part No. PFT-522) and Tivar
88 (Part No. PFT-520).
The top sides of the Lids have two pins which engage with the Compression Plate on the
instrument during the attachment process. Align the pins with the holes on the compression
plate and press up to attach. Two release buttons must be pressed in order to remove the Lid
from the Compression Plate.
Engagement Pin
Engagement Pin
Figure III-4a: Top Side of Lid Showing Engagement Pins
