Gilson Test-Master® Testing Screens deliver accurate particle size separations for large samples and are ideal for coal, coke, ore, and many other dry, granular materials. Standard vibration characteristics are designed for coarse materials of mid-range density, such as limestone or gravel aggregates.
This testing screen series features a counter-balanced drive assembly with internal rotating counterweights to equalize the vertical screening action and assure smooth, quiet operation. The Test-Master® can be placed anywhere with no need for permanent bolting to the floor. Sample vibration characteristics are identical to our TS-1 and TS-2 Gilson Testing Screens.
The Test-Master® has a fully enclosed design that ensures a safer operation and helps confine and control the airborne respirable quartz, silica, or crystalline particles in the breathing zone of personnel. It features a hopper that has a 1.6ft³ (45.3L) sample volume and is hinged at the rear to allow the sample to be introduced incrementally as the machine is running. A panel blocks dust from escaping through the opening when the hopper is closed.
The narrower panel doors require less space to open and fold flat across the front of the unit. The vertically hinged front panel doors offer improved access and clearance and can be placed anywhere in the lab with no need for permanent installation. The doors also feature a safety interlock switch that disables the Test-Master® when open.
A built-in electronic digital controller has an LED display of time remaining and produces an audible tone at the end of the test cycle. Test cycles lasting up to 99 minutes and 59 seconds can be programmed, and cycles may be interrupted without loss of test time. Operates with a powerful, capacitor-start 1/3hp motor.
An ergonomic foot pedal easily operates the hydraulic clamping and pressure release system for the screen trays. Removable, independent 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 E11, ISO 565 specification cloth, or ASTM E323/D4749 punched steel plate. Screen cloth is replaceable, ensuring long life and inexpensive maintenance of trays.
TM-5 Models accommodate up to six screen trays plus one pan slot.
TM-6 Models accommodate up to seven screen trays plus one pan slot.
- The fully-enclosed structure reduces sound and controls dust
- No bolting or installation is required via a counter-balanced drive
- The integral hopper evenly disperses samples
- Increased operator safety with an interlock switch that shuts down the machine when doors are open
- Hydraulic foot pedal easily tightens or releases screen trays
- Integral, digital timer enables repeatable tests
- Gilson Test-Master® Testing Screen, with 6 or 7-tray capacity