... 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 ... , zero adjust automatically, zero resetting and so onSuitable for the great sample test from powder material, Φ3 small stick of ...