AlpSDDS-H: Products with surface temperatures greater than 750 °C. The instrumentation is housed inside reinforced, liquid-cooled protective enclosures. The emissivity of the high-temperature material is exploited as a natural light source, making the use of illuminators unnecessary. Perpendicularity between the camera and the product surface is required as far as possible. Recommended is the use of a pyrometer or thermal imaging camera to detect the actual surface temperature of the material and dynamically manage the exposure time in image acquisition.

AlpSDDS-C: Products with surface temperatures less than 750 °C. The instrumentation is installed inside a protective enclosure where two cameras and two illuminators are located in order to ensure acquisition under controlled and repeatable conditions. It is installed in an elevated position at a transit point of the handling system on which the material is housed.