• Counterbalanced drive for smooth, quiet operation.

• Integral hopper for easy sample handling.

• Fully enclosed to minimize dust.

• Built-in digital timer for maximum test repeatability.

The redesigned Test-Master® Testing Screen now
features an easily controlled, integrated hopper
for easier introduction of sample material and
vertically-hinged front panel doors for improved
access and clearance. The 1.6ft³ (45.3L) hopper
is hinged at the rear and allows the sample to
be introduced incrementally as the machine is
running. When the hopper is closed, a panel blocks
dust from escaping through the opening. The
narrower panel doors require less space to open
and fold flat across the front of the unit. The doors
also feature a safety interlock switch that disables
the Test-Master® when open.

TM-5 with six-screen tray capacity, and seven-tray
TM-6 units feature the same reliable counterbalanced
drive assembly, fully enclosed operation
and electronic digital controller as our previous
models. Sample vibration characteristics are
identical to our TS-1 and TS-2 models and the
Screen Trays are interchangeable. Internal rotating
counterweights of the Test-Master® drive system
equalize the vertical screening action to assure
smooth, quiet operation and prevent transfer of
vibrations to other lab instruments.

The Test-Master® may be placed anywhere in the
lab and does not require permanent installation. A built-in, UL approved electronic controller has LED
display of time remaining and produces an audible
tone at the end of the test cycle. Test cycles lasting
up to 99 minutes, 59 seconds may be programmed
and cycles may be interrupted without loss of test
time. An ergonomically operated foot-pedal easily
operates the hydraulic clamping and pressure
release system for the screen trays.

Screen Trays and Dust Pans for Test-Master units are ordered separately. The Dustpan may
optionally be placed on the bottom shelf of the
unit, freeing up a slot for an additional screen
tray. Independently removable screen trays are
shared by both the Testing Screen and Test-
Master® models and are available in a wide
range of opening sizes with ASTM E 11, ISO
565 specification cloth or punched steel plate.
Screen cloth is replaceable, insuring long life
and inexpensive maintenance of trays. Each tray
features a generous 14.75×22.75in (375x578mm),
2.33ft² (0.22m²) clear screen area. Available
Screen Trays, Dustpans and Replacement Mesh
sizes are listed in the accompanying selection
guide. Optional Dustpan configurations can be
ordered for increased capacity. For samples with
larger particle sizes, the wider tray spacing of the
TM-5 allows more efficient agitation. Both operate
with powerful, capacitor-start 1/3hp motor. Overall
Dimensions: 28x35x50 in (711x889x1,270mm).

Test-Master® accessories and options allow
greater versatility for processing a wider range of
materials. Standard vibration characteristics are
designed for coarse materials of mid-range density
such as limestone or gravel. Separation of fine,
sensitive or low density materials such as wood
chips, coal or coke can be improved by adding
the TSA-153 Speed Variation accessory and/
or the factory-installed TSA-201 Low-Amplitude
Drive Shaft. These options reduce break-down
of material during screening and allow the user
to match screening characteristics to the specific
material. Customers with special materials should
contact a Gilson technical service representative.
Other accessories such as Clean-N-Weigh and
Tray Racks interchange with Testing Screen
models, making the Test-Master® a good choice
for an efficient upgrade in the modern lab.