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Unique automated Quality/Control instrument for determination of σs for ferromagnetic compounds

The sigmameter is designed to measure the specific saturation magnetization (σs) of a material. This parameter characterizes a ferromagnetic phase and is, in principle, independent of the structure and shape of the sample. When a ferromagnetic compound is placed in a magnetic field it becomes magnetized. Magnetization increases with field strength until it reaches a maximum.
The specific saturation magnetization (σs) is the ratio of the maximum magnetic moment to the mass of the material (the magnetic moment being determined by driving a sample out of the magnetic field and measuring the e.m.f. induced in a coil). The integral is proportional to the σs value for the sample, provided that the sample was saturated in the field. The reading unit microprocessor integrates the e.m.f., calculates either the σs value or the content of the ferromagnetic phase, and indicates the value on a digital display.

Max. recommended sample dimensions Ø 30 x 20 mm
Air-gap Ø 60 x 25 mm
Air-gap field 800kA.m-1/10000 Oe
Ejector Electro-pneumatic jack
Sensitivity approx. 1mg cobalt
Accuracy ±1% on full scale
Measuring time about 10 sec (weighting excluded)
Ambient temperature range +10°C to + 40°C
Electrical Supply 230 V – 50/60 Hz – 50 VA
Air supply 4 bars
Weight 400 kg


This an extract of our documentation, please register to have access to all documentation.

Specific Saturation Magnetization : Sigmameter par SETARAM