... Brand and Manufacturer1,Name Three-phase full-wave ac/dc fluorescent magnetic powder flaw detection machine2,Model CZQ-4000B,Design ... Solid-state relay controlled and Phase shifting trigger circuit stepless.5,Electric control system6,Spraying, agitation, filtration and recycling system ... setDC, 0--20000AT, RMS three-phase full-wave dc,Timely set5,Circular and longitudinal can switch6,Sensitivity6.1, ...