With both the List-Magnetik FerroPro FP-5 and Ferropro Compact, the relative magnetic permeability µr of materials and construction parts can be determined in the range between 1.000 and 5.000.
The FP-5 laboratory device can statistically evaluate measured values and has an interface via USB to the Windows PC.
Areas of application are the quality control of stainless steels, the non-destructive material testing of structural parts, material selection for apparatus in the field of electron / ion physics and for nuclear resonance devices or the detection of material changes in highly stressed parts. FerroPro FP-5 can be used to perform permeability measurements in accordance with ASTM A342 Test Method 4 and EN 60404-15 Procedure 6.
The probe contains a permanent magnet that magnetizes the sample near the probe tip. Two sensitive magnetic field sensors in differential circuit measure the field distortions caused by the magnetization of the sample. The device is calibrated to precisely calibrated reference standards of the Physikalisch-Technische Bundesanstalt PTB (German National Metrology Institute, Braunschweig). A recalibration is easily possible. A calibration standard is included with every device.
Similar to the FP-5 in a handheld instrument, the FerroPro Compact has additional functions such as scan measurement and analog display. In addition to the Windows interface, the FerroPro Compact offers an interface to mobile devices.