Hysteresis Graph Test System

The DX-2012H DC Hysteresis Graph Test System conforms to China National Standards GB/T 3217-92, GB 11209-89 and international standard IEC 404-5.

Adopt ATS structure, users can customize different configurations as required: According to the intrinsic and size of the measured sample to decide the electromagnetic size and corresponding testing power supply; Select different measuring coils and probes according to the option of measuring method. Decide to whether choose a fixture in accordance with the sample shape. Decide to whether select heating installation or not according to the test requirement.


General Features of DX-2012H DC Hysteresis Graph Test System

1. Automatic measurement on saturation hysteresis loop and magnetic characteristic parameters of generally permanent-magnet material such as Ferrite, Rubber & Plastic Magnet and AlNiCo, etc.: Js, Br, HcB, HcJ, (BH)max and µrec.

2. Automatic measurement on demagnetization curve and magnetic characteristic parameters of rare earth permanent-magnet materials such as NdFeB and SmCo, etc. at the second quadrant: Br, HcB, HcJ, Hk(H90) and (BH)max.

3. Test sample shapes: circular ring, round cake, square, tile and other irregular shapes.

4. Adopt B coil + fluxmeter to measure magnetic induction, zero shift of integrator can be self-corrected through software.

5. Adopt J coil + fluxmeter to measure magnetical polarization, the remnant coil area of J coil can be automatically compensated through software.

6. Magnetic field intensity can be measured with a Hall magnetometer, and nonlinear error of the Hall probe can be corrected through software, within the 0 ~ 2.4T range, nonlinear error can be controlled within±0.2%.

7. Adopt H coil + fluxmeter to measure magnetic field intensity, Hall magnetometer is only used to indicate the zero point of the magnetic field so as to thoroughly eliminate the nonlinear error of the hall probe.

8. The optimal range of field voltage, fluxmeter and magnetometer can be automatically set up.

9. Magnetization, testing and demagnetization of the general permanent magnetic sample completed at one time, time set up 20 seconds ~ 60 seconds.

10. Rare earth permanent magnetic samples need saturation magnetizing before testing, testing time of 60 seconds ~ 120 seconds.

11. The sample after testing is in demagnetization or magnetizing status, freely selected by users.

12. Select the heating head and temperature controller to detect magnetic characteristics of Ferrite, AlNiCo and rare earth material under high temperature (maximal 220°C).

13. Select a shoe jig for direct measurement on the magnetic shoe.


Software Features of DX-2012H bh loop tracer

1. Operate under Windows XP, 7, 8, 10 operating systems, Chinese/ English or pure English interface optional, conform to Windows software specification, visual and simple operation.

2. Full automatic control, intelligent identification, and minimize manual operation.

3. Sampling waveform and instrument status under real-time monitoring, and can be stopped at any time.

4. Automatic completion of data calculation, and temperature conversion of test results.

5. The file system adopts database format, and can directly print or output test results in Excel form.

6. Powerful file management functions: data saving, deletion and removal.

7. Data files contain complete sampled data, sample parameters, instrument parameters and testing schemes, adopt text format, can be conveniently typed into other software.

8. Display magnetic energy-product curves such as B( H) and J( H) magnetic hysteresis cycle or demagnetization curve and B (BH) magnetic energy-product curve, etc. and display the coordinate message at every data point on the curve.

9. Simultaneous display of multiple test data curve diagrams, for example, demagnetization curve or magnetic hysteresis cycle of the same sample under different temperatures, demagnetization curve or magnetic hysteresis cycle of different samples, etc.

10. Support various models of printers, test reports accurately match printer sheets.

11. Print preview function, can conveniently regulate the size and edge distance of the test report.

12. The test report can be directly printed or generated JPG image file. JPG image files can be sent directly through E-mail, or saved into disk.

13. Test reports contain complete curve diagrams, test results, test conditions and sample parameters. To facilitate adding user mark and enterprise name.


Software Screen of DX-2012H bh curve tracer


Technical Data of DX-2012H bh curve tracer


System Specifications

Test AlNiCo standard sample, measuring error on entire magnetic hysteresis cycle estimated: B: 1%, H: 1%

Parameters measured Br(%) HcB(%) HcJ (%) (BH)max(%)
Uncertainty (k=2) 1 1 1 2
Repeatability (constant temperature) ± 0.3 ± 0.3 ± 0.3 ±1


Instrument Specifications

DX-2000H Test Power Supply   DXT150 Electromagnet
Output Voltage: 0 ~±100V
Output Current:±20A (maximum value)
Stability: superior to 0.05%
Stability: superior to 0.05%
Head Diameter: 150mm shrink to 80mm
Head Spacing: 0 ~ 50mm (continual adjustable)
Maximal Magnetic Field: 2.4T (head spacing 10mm, coil current 30A)
DX-210B Fluxmeter DXT200 Electromagnet
Range: 2.5, 5, 10, 20mWb
Full Range Precision: 0.5%
Zero Shift: 2µWb /30 seconds (2.5mWb)
Head Diameter: 200mm shrink to 120mm
Head Spacing: 0 ~ 50mm (continual adjustable)
Maximal Magnetic Field: 2.4T (head spacing 10mm, coil current 40A)
DX-210H Magnetometer DXT250 Electromagnet
Range: 0.5, 1, 1.5, 3T
Full Range Precision: 0.5%
Non-Linearity:±0.2% (software correction)
Head Diameter: 250mm shrink to 150mm
Head Spacing: 0 ~ 50mm (continual adjustable)
Maximal Magnetic Field: 2.7T (head spacing 10mm, coil current 80A)
DXT130 Electromagnet PC6616 A/D D/A card
Head Diameter: 130mm
Head Spacing: 0 ~ 50mm (continual adjustable)
Maximal Magnetic Field: 1.5T (head spacing 10mm, coil current 20A)
A/D Conversion: 16 bits,16 channels
Conversion Time: < 10µs
Conversion Accuracy: 0.02% (full range)
D/A Conversion: 12 bits, 2 channels
Conversion Accuracy: 0.1% (full range)


Product Family of DC Hysteresis Graph (DX-2012H)

Serial No. Product Model DX-2012H130 DX-2012H150 DX-2012H200 DX-2012H250
1 Electromagnet Model DXT130 DXT150 DXT200 DXT250
2 Test Power Supply 2kW 3kW 4kW 8kW
3 Fluxmeter Configuration One DX-210B Two DX-210B
4 Magnetometer DX-210H
5 Data Acquisition Card PC6616
6 Measurement Software HMTest partial functions HMTest all functions
7 Computer and printer Dell Dimension E-520n computer+ HP1020 laser printer
8 Standard Specimen One AlNiCo standard sample
9 Fixed Coil One B coil One J coil J coil + H coil J coil + H coil
10 Test Specimen Category AlNiCo
11 Specimen Size
(with the round sample as an example)
Diameter 3 ~ 100mm
Thickness 3 ~ 50mm
< 130 - 1.2H
General permanent magnetic:
3 ~ 60mm
H3 ~ 50mm
Rare earth permanent magnetic:
5 ~ 20mm
H5 ~ 15mm

General permanent magnetic:
3 ~ 90mm
H3 ~ 50mm
Rare earth permanent magnetic:
5 ~ 30mm
H5 ~ 20mm

General permanent magnetic:
3 ~ 120mm
H3 ~ 50mm
Rare earth permanent magnetic:
5 ~ 50mm
H5 ~ 30mm



Serial No. Options Name Functional Description Remark
1 B Coil Direct measurement on sample magnetic induction density, winding unnecessary Customized, and adaptable to the measurement of general permanent-magnet material
2 J Coil Direct measurement on sample magnetical polarization, winding unnecessary Customized, and adaptable to the measurement of all permanent-magnet materials
3 Common Head Work with an electromagnet to generate a uniform magnetic field DCT130 standard configuration, other models optional
4 Horn Head Generate a larger uniform magnetic field All models of electromagnet optional
5 Shrinkage Head Applies to improve the maximal magnetic field of an electromagnet DCT130 optional, other models with standard configuration
6 Iron Cobalt Head Can improve the maximal magnetic field for about 0.3T Only DCT200 and DCT250 optional
7 Heat Head This applies to measuring high-temperature properties of permanent-magnet material All models of electromagnet optional
8 TCS-200 Temperature Controller Applies to control temperature of heat head, control range: 50 ~ 250°C Optional, can match with various heat heads
9 Tile Jig This applies to measuring magnetic shoe Optional parts, customize according to magnetic shoe size, to match electromagnet with corresponding size


DX-2012H DC Hysteresis Graph Test System is a BH Loop tracer to measure the remanence Br, coercive force Hcb, internal magnetism of various ferrites, alnico, neodymium iron boron and samarium cobalt and other permanent magnetic materials. Magnetic performance parameters such as coercive force Hcj and maximum magnetic energy product BHmax, and display BH hysteresis loop and demagnetization curve.
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