• Put in operation on November 2007.

• AC closed magnetic flux permeameter.
• Developed by the Service following international IEC 60404-3 to characterize magnetic steel strips. Calibrated by an accredited laboratory.
• Designed for the measurement of amplitude permeability, hysteresis loop and magnetic losses in W/kg.
• Operation:
  • It integrates a primary and a secondary windings around a hollow support where the sample is introduced. A sinusoidal voltage source circulates a primary current that produces a magnetic field at the sample.
  • The magnetic field at the center of the winding, just below the sample, is measured using a hall sensor.
• Performance:
  • Rango de funcionamiento:
    • Frequencies: 1 — 400 Hz .
    • Magnetic field: ≈30A/m — 10000 A/m.
  • The measurement error is less than 10% at 50 Hz.
• Sample characteristics:
  • It has been designed to measure strips with the following dimensions:
    • Length ≥ 17 cm
    • Width ≤ 5 cm
    • Thickness ≤ 0.25 cm