ASTM D2172
ISIRI 1689
The Centrifuges are used for the determination
of the bitumen percentage in bituminous
mixtures. All models comprise a removable
precision-machined rotor bowl housed in a cylindrical
aluminum box. They are driven by an
electric motor fit with AC drive (inverter) with
the double function of speed control up to 3600
rpm. regardless of the frequency (50 or 60 Hz)
and electrical braking. The centrifuge can be
set for the automatic speed ramp up to 3600
rpm. or to any intermediate speed by the front
knob. A digital display monitors the frequency,
which is proportional to the speed.