... all the magnetic particle inspection technical requirements in Standard JB/T8290-1998.C,Inspection areas Can meet the ... control system6,Spraying, agitation, filtration and recycling system of magnetizing suspending liquid7,Longitudinal magnetization coil7.1, ... diameter 400mm.8,The human-machine interface control system 11,Automatic demagnetization systemAttenuation type automatic demagnetization.12 ...