Measuring the magnetic properties of products is of immense importance in many different industries, primarily to ensure operational performance, product safety, and compliance with technical standards.
This importance is demonstrated through the following key aspects:
1. Ensure Product Performance and Functionality
Electromagnetic compatibility (EMC): In electronics, unwanted magnetic fields can interfere with signals, distorting measurements from sensitive sensors (e.g., in medical devices, aerospace, or computer hard drives). Magnetic measurement helps identify sources of interference and apply appropriate shielding measures.
Sound quality: In the production of loudspeakers or headphones, the precise magnetic field strength of the magnet is a crucial factor determining the quality and loudness of the sound.
Precision mechanical operations: Residual magnetism on machine parts can jam the movement of small components or disrupt the operation of relays and solenoid valves.
2. Material Quality Control and Production Process Control
Material properties: Magnetic testing helps verify whether input materials are of the correct type and meet technical specifications (for example, stainless steel requires non-magnetic properties in many applications).
Control the machining process: Processes such as welding, laser cutting, or heat treatment can alter the magnetic properties of metals. Measurement helps detect defects in the manufacturing process.
3. Ensuring Safety for Consumers and Equipment
Food and pharmaceutical packaging: Measuring and controlling metal contaminants (based on magnetic principles) is mandatory to ensure food safety and hygiene, preventing consumers from ingesting dangerous metal fragments.
Medical devices: In medical settings (e.g., MRI rooms), controlling the magnetic properties of equipment and auxiliary materials is extremely important to ensure absolute patient safety and prevent damage to expensive machinery.
4. Compliance with Shipping Standards and Legal Regulations
Air freight: Shipments with strong magnetic properties can interfere with aircraft compasses or navigation systems. Measurement is necessary to comply with IATA (International Air Transport Association) dangerous goods regulations.
Industry Standards: Many industries have strict standards regarding the permissible levels of magnetism in their products.
Kanetec TM-901EXP Magnetic Tester (3,000 mT / 30,000 Gauss)
Magnetic measurement is performed using various methods and equipment, depending on the purpose of the measurement (measuring magnetic field strength, measuring residual magnetism, or measuring material properties).
MAGNA Tesla meter MG-901 magnetic meter 0 ~ 3,000.0 mT
Here are some common measurement methods:
1. Measuring Magnetic Field Strength
This is the most common method for measuring the strength of a magnetic field at a specific point.
Equipment used:Magnetic field meter (Gaussmeter / Teslameter) or Magnetometer.
Unit of measurement: Tesla (T), Gauss (G), Ampere-meter (A/m), or Oersted (Oe).
Main operating principle (most common): Hall Effect.
A Hall sensor is a thin sheet of semiconductor material. When this sensor is placed perpendicular to a magnetic field line, a small voltage is generated (Hall voltage), which is proportional to the magnetic field strength.
Users simply place the Gaussmeter probe at the location where they want to measure the magnetic field (for example, near a magnet, motor, or operating electronic device) and read the result on the screen.
2. Measurement of Remanence
This is a method for measuring the amount of residual magnetism on metal parts (such as screws and steel components) after machining, which is crucial in the electronics and precision engineering industries.
Equipment used:Fluxgate Magnetometer or specialized residual magnetometers.
How to measure: The device is placed in contact with or very close to the material surface. It measures the amount of remaining magnetic flux. The result helps determine whether the product needs to undergo demagnetization.
3. Measurement of Material Magnetization Characteristics (VSM)
This is a laboratory measurement method used to determine core material properties such as permeability, coercivity, and saturation magnetization (hysteresis loop).
Equipment used:Vibrating Sample Magnetometer (VSM) or Magnetic Measurement Systems (MPMS).
How to measure: The material sample is placed in a standard magnetic field generated by the device. The sample is vibrated at a specific frequency. The change in magnetic flux generated by the sample is captured by a sensor and analyzed using specialized software.
Semiki Semiki is one of the reputable suppliers of industrial measuring equipment in the Vietnamese market. You should contact Semiki to purchase magnetic measuring equipment (magnetic field meters, gaussmeters, teslameters) for the following reasons:
Specialization in measuring equipment: Semiki specializes in providing precision measurement solutions for a wide range of industries, including equipment used in electronic and mechanical quality control.
Product variety: They typically distribute products from many well-known international brands, giving you a wide range of options to suit your specific needs (for example, measuring residual magnetism on steel products or measuring the magnetic field strength of magnets).
Professional technical consulting: Semiki's team can help you determine which type of magnetometer is best suited for your application, ensuring you purchase the right equipment.
After-sales support: Buying from an official distributor ensures warranty coverage, regular equipment calibration, and technical support when needed.
Contact Semiki directly: You can find Semiki's contact information (via website or phone number) to request a quote and specific advice.
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