The pump is suitable for transferring and dispensing large amount of fluid in industry. One channel flow range: 0.01-13L/min; speed range: 0.1-600 rpm. It can cascade two pump heads. It adopts the brushless servo motor drive with large torque, free maintenance, high rotating accuracy. Having basic functions: such as reversible direction, start/stop, full speed (fast cleaning) and speed-variable. The pump has three types of distributing mode: time dispensing mode; volume dispensing mode; copy dispensing mode, meets all kinds of complex dispensing requirements. RS485 interface, as adopting the MODBUS communication protocol, the pump is easier to be connected with other equipments, such as computer, human machine interface and PLC.