Brookfield PFT Powder Flow Tester - III.3 Lid Selection

AMETEK Brookeld 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nish,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Brookeld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