Legacy measurement techniques for multilayer products cannot measure materials that are not transparent.  Due to its long wavelength, a terahertz pulse can easily penetrate opaque materials, while being a totally safe alternative to nuclear gauges.

Single-sided scanning of smooth or textured TPO can provide multilayer thickness measurements to allow tight process control.

In a rubber product, like EPDM, the T-Gauge Sensor can measure the thickness of both white and black layers with a single scanner.

The T-Gauge can easily integrate with any Quality Control System, and even detect delamination of the multiple layers.  

Large roll

Typical Product Configuration: