The pulse control instrument is the main control device of spraying and cleaning dust of pulse bag filter. Its output signal controls the electromagnetic pulse valve to carry on the circulation clean dust to the filter bag, guarantees the dust collector's processing ability and the dust collection efficiency. The pulse interval, pulse width, output digit and pulse cycle interval can be adjusted, the data can be displayed by digital display tube, and the output digit can be expanded according to the requirements. The pulse controller can be divided into online pulse controller, programmable pulse controller and contactless pulse controller.