This equipment is used to determine the bitumen percentage in bituminous paving mixtures. It has a removable, precision machined, aluminum rotor bowl, mounted on a vertical shaft.
A filter paper disc is pressed in between the rotor bowl and cover plate by tightening a knurled nut. The bowl assembly is enclosed in a housing mounted on a cast body. In the electrical operating model, the rotor bowl is coupled to a motor. The solvent may be introduced during test through a cup on the housing cover.
This equipment is electrically operated with an in-built dimmerstat for speed variation from 0-3600rpm. Each unit is supplied with a set of 25 filter paper discs.
Applicable Standards: ASTM D 2172, AASHTO T-58, T-164, EN 12697-1.