Calibration & Demag.
Model 990A/990C - Magnetic Instrumentation Inc. (MI)
The Model 990 Series Magnetreaters® are highly accurate, pulse type, ringing demagnetizers (also called treaters) for the controlled stabilization of permanent magnets and permanent magnet assemblies. Regardless of line voltage stability, they provide a controlled output through continuous pulse amplitude regulation. Treating voltage is variable from 0 to 600 VDC. Additional energy can be added to the Model 990 Series by interconnecting a Model 992 Energy Booster. The energy level is increased from 18 to 36 watt-seconds. With this option, treating coils will produce higher demagnetizing fields and lower ringing frequencies, which can provide greater field penetration in some applications.