FE-2100MQ Mini Magnetic Moment Measuring Instrument

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FE-2100MQ Mini Magnetic Moment Measuring Instrument

FE-2100MQ miniature magnetic moment measuring instrument belongs to the FE-2100MQ rare earth permanent magnet material quality testing device plus miniature Helmholtz coil. At present, rare earth material manufacturers measure the quality of rare earth materials by using fluxmeters and Helmholtz coils to measure the magnetic moment, remanence, coercivity and maximum energy product of rare earth and permanent magnets. It can greatly save the measurement time of the quality data of magnetic materials, and is completely suitable for the rough classification and screening of a variety of magnetic materials.

Product Details

technical parameter

Test case

Principle　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

　　FE-2100MQ miniature magnetic moment measuring instrument belongs to FE-2100MQ rare earth permanent magnet material quality testing device plus miniature Helmholtz coil. Currently rare earth material manufacturers measure the quality of rare earth materials by using fluxmeters and Helmholtz coils to measure the magnetic moment, remanence, coercivity and maximum energy product of rare earth and permanent magnets. It can greatly save the measurement time of the quality data of magnetic materials, and is completely suitable for the rough classification and screening of a variety of magnetic materials.

Introduction　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

　　The FE-2100MQ miniature magnetic moment measuring instrument adopts a flux meter with a miniature Helmholtz coil. It is mainly used to measure the magnetic flux of a permanent magnet device under the condition of the coil. Multiply the coil constant to obtain the magnetic moment of the device. The size of the sample can be calculated material Br, Hcb and BHmax. Experiments have verified that the use of one-dimensional coils to test axially magnetized cylindrical, toroidal, and square-type rare earth permanent magnet samples can accurately test the total magnetic moment M (to be precise, Mz) of the material, and the material BH demagnetization curve is close to The straight line can accurately calculate the three important parameters of the magnetic properties of the material, Br, Hcb, and BHmax, so as to judge the quality of the material. It is well used for the transfer of the quality of rare earth permanent magnet materials between material companies and material users. Among them, the accuracy and repeatability of the magnetic moment test are far superior to the use of BH test equipment to test standard samples to transmit data. The high test efficiency can achieve full inspection of all magnetized samples, and timely discover device defects, while ensuring that the materials Judgement of magnetic energy product level.

1. SmCo28H sample size: L20mm× W10mm× 5mm, the test data using FE-2100H permanent magnet material measuring device is as follows: Br=10.83kGs, Hcb=10.26kOe, Hcj≥30kOe, BHmax=27.78MGOe.

Using FE-2100MQ rare earth permanent magnet material quality test device with one-dimensional Helmholtz coil (urec is calculated at 1.05):

Number	M(uWbm)	Ø(mWb)	Br(T)	Hcb(kOe)	BHmax(MGOe)
1	1.059	2.659	1.088	10.08	27.42
2	1.059	2.659	1.088	10.08	27.41
3	1.059	2.66	1.088	10.09	27.43
4	1.06	2.663	1.089	10.1	27.49
5	1.059	2.661	1.088	10.09	27.45
6	1.059	2.661	1.088	10.09	27.45
7	1.06	2.663	1.089	10.1	27.49
8	1.059	2.661	1.088	10.09	27.44
9	1.059	2.66	1.088	10.09	27.43
10	1.06	2.662	1.089	10.09	27.47
Average	1.0593	2.6609	1.0883	10.09	27.448
Maximum value	1.06	2.663	1.089	10.1	27.49
Minimum	1.059	2.659	1.088	10.08	27.41
Positive deviation%	0.066	0.0789	0.0643	0.0991	0.1530
Negative deviation%	-0.028	-0.0714	-0.0276	-0.0991	-0.1384

The test repeatability is excellent. The difference between Br test accuracy and the BH test device is controlled within 0.6%. The permeability coefficient is calculated at 1.05 (accurate optimization can be performed), the Hcb deviation is within 1.56%, and the BH deviation is 1.04%.

2. N30M sample size: D13.08mm× H6.35mm, the test data using FE-2100H permanent magnet material measuring device are as follows: Br=11.06kGs, Hcb=10.68kOe, BHmax=29.53MGOe.

Using FE-2100MQ rare earth permanent magnet material quality test device with one-dimensional Helmholtz coil (urec is calculated at 1.05):

Number	M(uWbm)	Ø(mWb)	Br(T)	Hcb(kOe)	BHmax(MGOe)
1	0.9232	2.319	1.105	10.52	29.06
2	0.923	2.318	1.105	10.52	29.05
3	0.9227	2.318	1.104	10.52	29.03
4	0.9226	2.317	1.104	10.52	29.02
5	0.9227	2.318	1.104	10.52	29.03
6	0.9226	2.317	1.104	10.52	29.02
7	0.9223	2.317	1.104	10.51	29.01
8	0.9221	2.316	1.104	10.51	28.99
9	0.9216	2.315	1.103	10.5	28.96
10	0.9216	2.315	1.103	10.5	28.96
Average	0.92244	2.317	1.104	10.514	29.013
Maximum value	0.9232	2.319	1.105	10.52	29.06
Minimum	0.9216	2.315	1.103	10.5	28.96
Positive deviation%	0.0824	0.08632	0.09058	0.0572	0.1620
Negative deviation%	-0.0914	-0.0863	-0.09058	-0.1332	-0.1827

The test repeatability is excellent, the Br test accuracy is 0.2% compared with the BH test device, and the permeability coefficient is calculated at 1.05 (accurate optimization), the Hcb deviation is within 1.55%, and the BH deviation is 1.75%.

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