The Smoothtrac upgrade to Topcon’s sonic averaging system (SAS) for asphalt paving is designed to facilitate installation, adjustability and expandability.
The system now uses tow arm brackets that fit the predrilled hole-patterns on the tow arms for most new pavers from the factory. The bolt-on brackets eliminate the need for welding on the tow arms, which speeds installation, the company says. Also new to the sonic tracker system is height adjustability. Additional features include an optional extension kit to adjust the total length of the SAS beam to 30 feet. The new SAS kit is fully compatible with the ST-3 sonic tracker.