AbstractData acquisition, control, and automation in equipment for mechanical separation of liquids.Mass‐ and energy flow in a production process are accompanied by a flow of information. While data processing has reached a high standard, there is a lack of suitable sensors for acquisition of measured data in solid/liquid separation processes. Methods used for acquisition of data relevant to separation engineering are presented for selected separation equipment, possibilities of control with changing product properties are discussed, and unsolved problems of sensor technology are considere