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General description

LDA5 – Laboratory Demagnetizer using Alternating field serves for a laboratory demagnetization of rock or soil samples. This advanced demagnetizer allows to use AF demagnetization fields from 1 to 200 mT, four rates of AF field decrease and three different courses of alternating field decrease to tailor demagnetization process with respect to user needs. All these parameters are controlled by user friendly control software LDA5.

Sample is fixed in special 2-axis tumbler, which provides semi-random rotation of the sample during demagnetization process or setting one of the 18 position for demagnetization in desired direction. Advanced control electronics gives very well defined amplitude and pure sinusoidal shape of alternating field. Triple mu-metal shielding serves for elimination of local magnetic fields, so it is not necessary to use such demagnetizer in low-field cage.

Optional attachment PAM1 allows to perform anhysteretic magnetization, partial anhysteretic magnetization and pulse magnetization.

Main features

■	Alternating field up to 200mT (peak)
■	Pure sinusoidal shape of alternating field
■	18 directions set by 2-axis tumbler
■	Tumbling specimen demagnetization
■	Triple permalloy shielding for local magnetic field elimination
■	User friendly software
■	Four rates of alternating field decrease
■	Three course of alternating field decrease

Technical specifications

Alternating field amplitude	1 -200 mT (peak)
THD of alternating field	< 0.1%
Accuracy of set field	±1 %
Power requirements	120 and 230 V, 50/60 Hz, 1600 VA

Specimens to be demagnetized

Cylinder (regularly shaped specimens)
Diameter	25.4 ± 1 mm
Length	22.0 ± 1 mm
Cube	23x23x23 mm
	20x20x20 mm