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The AMT-4A Automatic Permanent Magnet Tester is designed for precise measurement of key magnetic properties of permanent magnet materials, supporting tests on NdFeB, AlNiCo, SmCo, Ferrite, FeCrCo, and more . It features high accuracy, intelligent control, and multi-scenario adaptability, including optional high-temperature testing up to 300°C. Compliant with national standard and international standard for magnetic material testing accuracy, it provides reliable data for quality control, R&D, and certification of permanent magnet products
The Automatic Permanent Magnet Tester is a high-precision instrument engineered for comprehensive evaluation of magnetic materials and permanent magnets. Designed for laboratory, production line, and quality assurance applications, this system provides fast, accurate, and automated measurement of magnet properties, including magnetic flux density (B), coercivity (Hc), remanence (Br), maximum energy product ((BH)max), and magnetic polarization (J).
By integrating advanced sensors, precision motion control, and intelligent software, the automatic permanent magnet tester enables full characterization of magnets such as NdFeB, SmCo, AlNiCo, Ferrite, and FeCrCo, ensuring that every batch of materials meets exact performance specifications.
In industries ranging from automotive and electronics to energy and aerospace, permanent magnets are essential components. Their performance directly affects the efficiency, reliability, and safety of electric motors, sensors, and generators.
The permanent magnet tester ensures each magnet delivers the required magnetic properties before integration into a final system. Accurate testing guarantees:
Stable product quality and consistency
Reliable data for R&D and production control
Reduced risk of motor failure or performance drift
Full compliance with ISO, IEC, and GB magnetic measurement standards
With Mag Spring®’s automated testing technology, manufacturers and research institutions can quickly evaluate both raw magnetic materials and finished magnet assemblies.
The automatic permanent magnet tester adopts a servo-controlled measuring system. Once the sample is loaded, all test steps — magnetization, demagnetization, flux detection, and B–H curve plotting — are completed automatically. This reduces manual errors and improves repeatability.
The permanent magnet property tester supports a wide range of magnet types and shapes — from cylindrical and rectangular samples to complex molded components. The system can test materials such as NdFeB (neodymium-iron-boron), SmCo, AlNiCo, and ferrite magnets with precision accuracy.
Equipped with precision Hall sensors and digital data acquisition, the tester measures magnetic field strength and induction with exceptional resolution. The BH curve tester generates real-time magnetic hysteresis loops, offering a complete visualization of magnetic behavior.
The testing software automatically calculates and displays all critical parameters: Br, HcB, HcJ, (BH)max, J, and permeability coefficients. Users can easily export test reports and data files for documentation or quality tracking.
Built with industrial-grade components, the magnetic material testing equipment offers stable operation over long hours. Overheat protection, current limiting, and smart interlock systems ensure operator safety during magnetization and demagnetization cycles.
For temperature-dependent testing, the system can be equipped with an environmental chamber, enabling magnetic property measurement under various temperature conditions (from -40 °C up to 180 °C). This is critical for rare earth permanent magnet testers used in automotive or aerospace applications.
The NdFeB permanent magnet tester provides accurate magnetic characterization for neodymium magnets widely used in high-performance motors and precision instruments. Thanks to its advanced magnetizing power supply and flux measurement coil, the system can fully saturate even high-coercivity NdFeB samples.
For SmCo and rare earth magnets, the system’s enhanced field strength and thermal stability enable precise magnetic property testing under real-world operating conditions. Researchers can easily observe temperature coefficients and flux loss through programmable temperature cycles.
Every permanent magnet BH curve tester is equipped with an integrated measurement coil and fluxmeter to generate full hysteresis loops. The software automatically computes key parameters, allowing engineers to analyze magnetic performance trends and optimize manufacturing processes.
This makes the automated magnetic property measurement system an essential tool for both laboratory research and industrial process control.
Over 20 years of expertise in magnetizing and magnetic testing equipment
Modular design supporting different test standards and magnet sizes
Quick calibration and zero-drift design for long-term accuracy
Worldwide technical support and remote diagnostics
Customizable interfaces for integration into automatic production lines
Mag Spring® continues to innovate in magnetic material testing equipment, providing dependable solutions for global users in the magnet industry.
1. What is a permanent magnet tester used for?
It measures key parameters like Br, Hc, and (BH)max for magnets such as NdFeB, SmCo, AlNiCo, and ferrite to ensure quality and consistency.
2. How does the automatic permanent magnet tester work?
It magnetizes and demagnetizes the sample while measuring the B–H curve through Hall sensors and automated software.
3. Can it test NdFeB and SmCo magnets?
Yes, the system supports high-coercivity rare-earth magnets including NdFeB and SmCo.
4. Can it perform temperature testing?
An optional temperature chamber allows testing from -40°C to 180°C to simulate real-world conditions.
5. Is customization available?
Yes, Mag Spring® offers custom field ranges, fixtures, and automation levels.
6. What is the difference between manual and automatic testers?
Automatic testers eliminate human error and produce repeatable, accurate results faster than manual systems.
7. Which industries use this equipment?
It’s used in automotive, motor manufacturing, electronics, aerospace, and research sectors.
8. How is the test data exported?
Reports can be exported automatically as PDF or Excel files for analysis and documentation.
9. Does Mag Spring® offer support?
Yes, the company provides global after-sales service, calibration, and remote support.
Enhance your testing workflow with the following Mag Spring® solutions:
Flux Density Meter (Gauss Meter) – Handheld tool for quick and precise magnetic field measurement.
Automatic Magnetizing Machine – High-energy system for NdFeB and SmCo magnet magnetization.
Magnetizing Coil & Fixture – Custom-designed coils for precise magnetizing and demagnetizing.
Magnetic Flux Leakage Tester – Detects flaws or cracks in magnetic materials.
Magnetic Separator & Filter Series – For ferrous contamination removal in powders, granules, and liquids.
20+ years of magnetic system innovation
Proven reliability in global magnet industries
Custom-engineered testing and magnetizing solutions
Comprehensive after-sales support
Mag Spring® — your trusted partner in magnetic testing, measurement, and magnetizing technology.
