DC Hysteresisgraph Test System within 0 ~ 2.4T range error can be ... second quadrant: Br, HcB, HcJ, Hk(H90) and (BH)max.Test sample shapes: circular ring, round cake, square, tile and other ... , testing and demagnetization of general permanent magnetic sample completed at one time, time set up 20 seconds ~ 60 seconds.Rare ... for direct measurement on magnetic shoe. DC Hysteresis graph Test System