AGGREGATE SCREEN SHAKER UNITS
DESCRIPTION
Porta-Screen The Porta-Screen has long been the accepted standard portable screen for quality control of construction aggregates at asphalt and ready-mix plants. Porta-Screen models are designed for performance durability, yet are light enough to be portable.
Testing Screen Vibration and amplitude characteristics are fixed at optimum for mineral aggregates in the 4in (100mm) to No.4 (4.75mm) size range. Options and accessories are available to optimize machine performance when testing finer samples or special materials.
Test-Master The Test-Master Testing Screen is fully enclosed to minimize dust, and 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.
TECHNICAL DETAILS
| Model | Measuring range | Screen Trays | Maximum Sample Size |
| Porta-Screen | 38µm (400 mesh) to 50mm (2’’) | 5 or 7 trays 14’’’x14’’ 356x356mm | Up to 60 lb. (30kg) |
| Testing Screen | 38µm (400 mesh) to 125mm (5’’) | 5 trays 14.75’’x22.75’’ 375x578mm | Up to 100 lb. (50kg) |
| Test master | 38µm (400 mesh) to 125mm (5’’) | 6 or 7 trays 14.75’’x22.75’’ 375x578mm | Up to 100 lb. (50kg) |
ASTM Screen: from ASTM 5’’ (125mm) to ASTM No. 400 (38µm)
ISO Screens: from 125mm to 38µm
Round-hole Screens: ASTM 4’’ (101.6mm) to ASTM 1/8’’ (3.2mm)
WHY INVEST IN THIS PRODUCT
● Large sample size up to 50kg
● Generous clear screen area
● ASTM, ISO and round-hole screens
