Method and device for the automatic adjustment of multichannel dispensers

摘要

Multi-channel dosing system with automatic calibration where each dispensing channel (1) includes a micro valve (4) feeding a nozzle (2) with an outlet opening (3). The distribution system (8, 13, 15) is connected to the microvalves via a flow sensor (10) at its inlet, which is fed in turn, by a reservoir (9, 14, 17). Equal flow resistance is presented by the paths between the inlet, and the outlets of the distribution system. Multi-channel dosing system with automatic calibration where each dispensing channel (1) includes a micro valve (4) feeding a nozzle (2) with an outlet opening (3). The distribution system (8, 13, 15) is connected to the microvalves via a flow sensor (10) at its inlet, which is fed in turn, by a reservoir (9, 14, 17). Equal flow resistance is presented by the paths between the inlet, and the outlets of the distribution system. A source (19) exerts pressure in the vessels and a controller (16) is connected to the flow sensor and the microvalves. This generates individual control signals from the flow sensor signals.