AC/DC magnetic permeameter
AMH-xxx-S Laboratorio Elettrofisico

The model PFMM (Permeameter for Feebly Magnetic Materials) is
an instrument to verify that a non magnetic material (for example
austenitic stainless steel) is really “non-magnetic”.
The permeameter PFMM quantifies the magnetic “weakness” of
the material by measuring its magnetization curve, relative
permeability ìr and susceptibility χ
When a non-magnetic material is used in an application where the
interaction with magnetic fields must be very low, the control of its
magnetization and permeability is fundamental.
The permeameter PFMM measures the relative permeability in the
range between 1.001 and 4, with a typical total accuracy less than
±2%.
When low values of permeability and susceptibility are required, the
Laboratorio Elettrofisico PFMM is necessary tool. The sensitivity of
the coil must be very high: for example, the PFMM can accurately
measure the susceptibility of good stainless up to 108 times lower
than the susceptibility of a typical Fe-Ni, that can be measured with
a permeameter for ferromagnetic materials.
The permeameter PFMM meets the ASTM A342 Standard.