Hysteresisgraph for Hard Magnetic Materials
15Pages

LABORATORIO ELETTROFISICO AMH-500 - HYSTERESISGRAPH HARD MAGNETIC MATERIALS Hysteresisgraph AMH-500 BH-Tracer AMH-500 Hysteresisgraph is a DC automatic measuring system for characterization of hard magnetic materials, such as Alnico, Ferrite, NdFeB, SmCo and bonded magnets. The AMH-500 meets International Standard IEC 60404-5 and ASTM A977. Measurements are performed at temperature ranging from ambient up to 220°C. Optional temperature pole caps (LPT) enable measurements above 220 °C that meets International Standard IEC/TR 61807. KEY BENEFITS • Remanence Br, coercivity HcB, HcJ, max energy product BHmax, Hknee, recoil permeability (µrecoil), etc. • Automatic measurement of 1st and 2nd quadrant, complete hysteresis loop, recoil line • Temperature measurements from ambient up to 220 °C • Wide range of accessories for any sample shape or size LATEST IMPROVEMENTS ê With the NEW additional Iron Cobalt Pole pieces the peak of magnetic field density increases considerably: up to 3.2 T with a 2.5 mm fixed gap STANDARD CONFIGURATION • Measuring coil • Reference sample, for day-to-day control • Dedicated software Xe-1.0 • PC and printer • Cabinet containing: Fluxmeters, Power supply, Heating unit and Polarity switch • Electr

Measurable materials Measurable quantities Sample shape Sample size Max H field Testing time Alnico, Ferrite, NdFeB, SmCo5, Sm2Co17, bonded magnets IMPORTANT NOTE: rare earth magnets need to be saturated externally (for ex. with a pulse magnetizer) Br, HcB, Hcr BHmax, Hknee, HA, BA, precoil, Jsat, Hsat, temperature coefficients aBr aHcJ, load line, working point, squareness, etc. Br ± 1% Cylinder, parallelogram, ring, any prism with parallel bases Diameter or diagonal from 3 mm to 82 mm, height from 0.5 to 50 mm Up to 3.2 T (2.560 kA/m) with 40 mm poles at 2.5 mm gap Less than 30 seconds...

MAGNETIC YOKE LEP/100-4S (see page 7) Poles diameter Maximum air gap Max field intensity Movement operating Poles pieces setting Dimensions (excluded upper poles adjustment) Weight 120 mm - 4.72" 80 mm - 3.14" see related diagrams, pages 8-9-10 Manual Micrometric 330 x 410 x 491 mm - 12.9" x 16.1" x 19.3" 350 kg (approx.) - 780 lb 60 V, 25 A 220 V single-phase, 50-60 Hz 1.5 kVA Rack width 482 mm (19"), h 1U RS232 POWER SUPPLY LKW-4-L Max Volt-Amp Power supply Average consumption Dimensions Communication PC AND SOFTWARE PC, monitor, printer with all connection cables Operating system...

LJ Compensated coils To improve accuracy and resolution, our standard LE Compensated coils measure the J-components with less dependency on the H field measurement. A second set of windings are used to measure the H components. Total B field is derived by the software (B=H+J). Available models: Model LJX-XX with thickness of 0.5 mm, only for room temperature [R.T] measurements Model LJA-XX with thickness of 1 mm, only for R.T. measurements Model LJT-XX with thickness of 2.5 mm. for measurements up to 220 °C THICKNESS 0,5 mm, TEMPERATURE RANGE 10 * 40 °C TYPE DIAMETER USABLE POLES THICKNESS...

LP Iron poles - see diagrams at page 8-9 Several models of interchangeable pole pieces are available to ensure the best measurement accuracy. Pure iron pole caps guarantees an uniform field in the gap with a negligible residual field. Pole cap diameters smaller than 120 mm are tapered to concentrate the field produced by the electromagnet. For example (up to 2.8 T in 2.5 mm gap with LP-60 Pole caps): See the Electromagnet part page 7. LPC Iron Cobalt poles - see diagrams at page 10 In order to increase the magnetic field within the gap we have the option to substitute the LP Iron pole...

Shaped poles for ferrite arc magnets Shaped pole pieces enable the non-destructive quality control of arc-shaped ferrite magnets. This eliminates the difficult task of cutting a regular-size sample from a fragile arc. The B measurement is performed by the coils wound around the pole piece, while the H measurement is performed by the sensor LPH-200. The curvature of arc magnets can vary depending on the application, Laboratorio Elettrofisico can provide custom pole pieces to conform your arc shapes. The measurement is processed within a fixed gap without using a closed circuit set up. This...

The Laboratorio Elettrofisico electromagnet model LEP/100-4S is used in all AMH Hysteresisgraphs, for the measurement of hard magnetic materials and cemented carbides. The model LEP/100-4S is a vertically oriented electromagnet fitted with a 120 mm diameter precision pole piece and with a continuously adjustable upper pole. This allows variation of the air gap from zero to 80 mm for maximum versatility. The pole piece is locked in place by a socket head screw located on the top portion of the yoke frame. Its special design enables to use the electromagnet without any cooling for a moderate...

FIELD DIAGRAMS - IRON POLES (LP)1/2 POLES LP-40 Diameter Gap adjustment POLES LP-60 Diameter Gap adjustment POLES LP-80 Diameter Gap adjustment Current 25 A: H @ 5 mm H @ 10 mm H @ 20 mm

FIELD DIAGRAMS - IRON POLES (LP) 2/2

FIELD DIAGRAMS - IRON COBALT POLES (LPC) Diameter Gap adjustment Current 25 A: H @ 2.5 mm H @ 5 mm H @ 15 mm Diameter Gap adjustment Current 25 A: H @ 5 mm H @ 10 mm H @ 20 mm Diameter Gap adjustment Current 25 A: H @ 5 mm H @ 10 mm H @ 20 mm

FIELD DIAGRAMS - HEATING POLES (LPT)

Xe-1.0 is a powerful software to manage automatically the measurement and to provide additional help to overcome several physical limitations; extrapolation of the curve at higher or lower temperatures, interpolation of the curve when incomplete or irregular, curve’s completion for high-coercivity magnets, etc. This operating software maintains the overall accuracy controlling all the parameters to ensure the measurement is precise and to prevent operating errors. Set of curves at different temperature and thermal coefficient evaluation Parameters set, results and graph Curve extrapolation at...