Compared to the ATM-01 rig, ATM-02 is a smaller-scale setup with lower maximum oil flow rate, temperature, and pressure. It does not include a vacuum system. Heating is provided via an oil bath in the oil tank. Compressed air is supplied by a screw compressor equipped with a dryer and filters, enabling flow rates of up to 110 g/s. The rig also features a 20,000 rpm electric motor mounted on a pulley system to drive the test equipment.
A laser diffraction system is available for studying sprays and droplets. It includes two lenses capable of measuring droplet sizes ranging from 0.5 µm to 1750 µm.