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Handheld Weak Magnetic Gaussmeter

Handheld Weak Magnetic Gaussmeter

FE-102 handheld weak magnetic gauss meter is equipped with a weak magnetic probe, the application of digital signal processing technology, can detect DC magnetic field, geomagnetic field and so on. There are many functions such as measurement/peak hold, MT/GS unit conversion, key-type automatic zero adjustment 0-3Gs-30Gs-300GsT three-gear range conversion, etc.

15

2022

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06

Measurement method of magnetic permeability

Measurement method of magnetic permeability

The permeability μ is one of the basic macroscopic physical quantities describing the magnetism of a substance. According to the nature of the applied magnetic field, the magnetic permeability is divided into static magnetic permeability, complex magnetic permeability and tensor magnetic permeability. The measurement methods of the three permeability are also different.

09

2022

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05

MEASUREMENT OF MAGNETIC MOMENT OF MINIATURE MAGNETIC STEEL

MEASUREMENT OF MAGNETIC MOMENT OF MINIATURE MAGNETIC STEEL

Through continuous efforts in the past two months, Hunan Yongyi Technology Co., Ltd. has extended the magnetic moment and magnetic declination measurement capability of micro magnetic steel to the measurement of NdFeB samples with a volume of 1mm (see photo). The reproducibility of the measured magnetic declination and magnetic moment meets the requirements of users (the repeatability of the test angle meets 1.0), and successfully supplies relevant inspection equipment for users.

26

2022

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04

Comparison of two methods for testing the magnetic properties of NdFeB (brand N42UH)

Comparison of two methods for testing the magnetic properties of NdFeB (brand N42UH)

Recently, some enterprises have proposed to measure the magnetization curve of rare earth permanent magnet materials. As we all know, with reference to the existing international or national standards, there is no requirement to test the magnetization curve of permanent magnetic materials (soft magnetic materials need to test the magnetization curve). Most of the permanent magnetic materials use saturation magnetization, especially rare earth permanent magnets, which mostly use solenoid pulse magnetization. Comparison of the magnetic properties of NdFeB tested by two methods (grade N42UH) The original data obtained from the test are plotted as follows:

22

2022

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04

The working principle and performance of electromagnet

The working principle and performance of electromagnet

Electromagnet is an active part that converts electrical energy into magnetic energy and further into mechanical energy. When using an electromagnet, the temperature rise of the coil will lead to a decrease in the output capacity, so the heat factor must be considered. The heat dissipation capacity of the electromagnet is related to the volume and structure

20

2022

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04

Precautions for using Gaussmeter

Precautions for using Gaussmeter

Gaussmeter is a special instrument for detecting the magnetic induction intensity of magnets, which can measure the surface magnetism of permanent magnet materials, the magnetic circuit gap magnetic field and the space magnetic field generated by the magnetic field generation device. Gaussiometer as a more precise instrument, in the use of the process should pay attention to the following matters

10

2022

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01

Temperature Test and Assessment of DC Magnetic Properties of Several Kinds of Metal Soft Magnetic Materials

Temperature Test and Assessment of DC Magnetic Properties of Several Kinds of Metal Soft Magnetic Materials

The following is a comparison and assessment of DC magnetic properties of several kinds of metal soft magnetic materials: soft magnetic alloy 1J79 material, soft magnetic alloy 1J50 material, soft magnetic alloy 1J22 material, soft magnetic alloy DT4E, iron silicon alloy FeSi material

06

2022

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01

Measurement of DC Magnetic Properties of Permalloy 1J85 at Different Temperatures

Measurement of DC Magnetic Properties of Permalloy 1J85 at Different Temperatures

When permalloy materials (e.g. 1J76, 1J79, 1J85) are used as shielding materials, the key assessment is the initial permeability ui(H = 0.08A/m) and the maximum permeability um of the materials. to test the initial permeability of accurate materials, two conditions are required: 1. Demagnetization is required to reach the Rayleigh area; 2. The DC curve of the material is obtained by impact measurement to ensure the accuracy and current nature of the test results. The DC magnetic performance device for FE-2100SD soft magnetic materials meets the requirements of the above two conditions in terms of hardware resolution and test method. The demagnetization control meets the minimum current zero uncertainty of 2uA (demagnetization frequency of 2Hz), and the minimum controllable effective value of H during the test reaches 0.0002A/m. At the same time, the technology "Closed Circuit DC Magnetic Performance Measurement Method for Soft Magnetic Materials" (2020112300784240) invented by our company is adopted, very good to meet the needs of permalloy testing.

27

2021

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12

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