... Automatic Hysteresigraph SystemGeneral Introduction 1, Our automatic hysteresigraph system (DMT-4) conforms to the standard permanent magnet test ... system (GB3217-92). 2, It is used to measure the major and minor hysteresis loops, demagnetization curves, recoil hysteresis loops and initial ... graph and form. There are Chinese or English character, system of unit, single picture or multi-picture to be ...