Abstract: A device for automatic control of pressure filters comprises a control assembly connected by a filtrate pipe (2) to at least one pressure filter (1 ), which is essentially a vertically arranged pipe (4) communicated with the filtrate pipe (2) and limited, at the lower end thereof, by a baffle (7) having a calibrated opening (7') and provided with a sensor (3) which is an electro-capacitive element connected via a converter (14) and a switch (15) to a timer unit (8) coupled to a frequency coincidence unit (17) which is connected to a frequency generator (19), and to control units (9) and to the pressure filter control consoles (11). The control unit (9) and the control console (11) of each pressure filter (1) are joined together, while the control output of each control console (11) is connected to an actuating device of a respective pressure filter (1).