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Paver System Five SAS Smoothtrac Theory of Operation

Learn the theory of operation for Smoothtrac in Paver System Five SAS. Understand how to position the Smoothtrac beam on the tow arm and how the control box averages the trackers' measurements. Discover optimal positioning and height for trackers and SAS beams.

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Paver System Five SAS Smoothtrac Theory of Operation

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  1. Paver System Five SAS Smoothtrac Theory of Operation

  2. Lesson Objectives • Understand the theory of Smoothtrac function • Know where to position the Smoothtrac beam on the tow arm

  3. Smoothtrac Installation • Smoothtrac has brackets that weld directly to the tow arm • Swing arms attach to the welded tow arm brackets • Beam can be moved in and out • Beam can be moved forward and rearward

  4. Smoothtrac Theory of Operation Each Sonic Trackermeasures and averages individually ... …and then the System Five Control Box averages all of the Trackers

  5. Smoothtrac Theory of Operation • The control box averages the 4 Tracker’s measurements • The Control Box has additional electronic averaging • Adjustable in the Performance Menu

  6. Smoothtrac Theory of Operation For a 1” grade deviation at one Tracker…

  7. SAS Placement on the Tow Arm • The center of the beam is the averaging balance point, or pivot point • Position the center of the beam where you would a single Tracker ¼” For a 1” grade deviation at one Tracker…

  8. SAS Placement on the Tow Arm • For best results, position the center of the SAS beam using the same analogy as any grade sensor • For Smoothness control, typical placement would be near the center of the tow arm

  9. Tracker Height • Recommended working height of Trackers for paving still applies • Commonly closer to 24” with SAS beams – OK! • OK to have trackers at different heights

  10. Tracker Height Position • When the screed is raised, the front Tracker will lower • Consider height of SAS beam • Swing up front tracker if needed

  11. Smoothtrac Position • Absolute mathematical analogy would not recommend any averaging device to sense the freshly laid mat • Practical application proves that this is an acceptable practice

  12. Smoothtrac Position • Third Tracker may end up positioned over the pile in front of the screed • Just move the Tracker forward as needed • Drill a new hold in the SAS beam

  13. SAS Smoothtrac Theory of Operation Paver System Five SAS Smoothtrac Theory of Operation

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