The Quantum Asphalt Drum Mix Control System is a PC-based control system designed to provide the user with complete control and an immediate picture of a hot mix asphalt plant's operation, including material flow, mix percentages, deviations from targets, and other dynamics. Featuring a fully graphic operator interface, the Windows-based system uses point-and-click technology to provide plant status at a glance.

Advanced Automation For Asphalt Drum Mix Plants

Full graphics operator interface
• Eliminates confusing text-based displays
• Animaton shows plant status at-a-glance
• Intuitive operator interaction

Real-time trends
• "Live" graphs of key process parameters
• Aids problem detection and quick response

Automatic calibration

Instantaneous production rate changes

Configures to meet plant requirements

Windows®-based with on-line help


Tracks equipment maintenance and re-calibration schedules

Historical data

• Displays production totals, ingredient totals, and mix history for any date range
• Allows analysis and management of plant productivity and efficiency

"Off the shelf" components

Password protected security levels

Facilitates future expansion


Libra Systems' Quantum System

"Here's How It Works..." is presented by the Asphalt Contractor magazine to introduce innovative products available to the industry. The publication chose Libra's Quantum Drum Mix Control
System for it's unique blend of graphics, control dynamics, and productivity analysis tools
(article shown below).

Quantum, by Libra Systems, Harleysville, PA , is an automatic control system designed to provide the user with complete control and an immediate picture of a hot mix asphalt plant's operation, including material flow, mix percentages, deviations from targets, and other dynamics. Featuring a fully graphic operator interface, the Windows based system uses point-and-click technology to provide plant status at a glance. Color graphics display a picture of an actual plant, including different plant functions. Animation, a beeper, screen colors, and flashing messages provide the operator with information to make decisions. Real-time trends are graphically depicted for key process parameters to provide immediate problem detection and diagnosis, says the manufacturer. Productivity and Event Summary screens provide the quantity of each product produced, raw ingredient used, and each event which occurs during the production day. This historic data helps determine faulty equipment and other conditions which can cause low production. A production status report, required by most state authorities, is printed at an interval selected by the operator. The report can be configured to meet state requirements. Other information is available in printed report form. An internal calculator and notepad/telephone book are also included. The system features plant setup and recipe screens to configure the system to exact requirements. On the calibration screen, the user selects a bin or device in the plant and the computer calculates and inserts calibration values. A maintenance screen tracks actual hours of running for each piece of equipment, and shows the time remaining before scheduled service or calibration. A "help" button is included on every screen, and all components in the system are off-the-shelf.