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Flux density3/22/2023 ![]() The purchaser needs to pay attention to the fact that the flux meter is often prone to errors when measuring small-sized magnets. This type of coil has an open nature and can easily put the measured magnet in or out, and it can also be directly observed. In recent years, many permanent magnet manufacturers have widely adopted Helmholtz coils for testing batch products. The Helmholtz coil is a device that produces a uniform magnetic field in a small area. They are mainly calibrated and traceable through mutual inductance or volt-second methods. There are three commonly used types: magnetoelectric, electronic, and digital integral. Magnetic Flux ( Φ) Measurementįluxmeter is a kind of magnetic measuring instrument for measuring magnetic flux. The larger the value of B, the greater the magnetic flux in the same area. The stronger the magnetic field, the denser the magnetic field lines. Magnetic flux density (B) represents the number of lines of magnetic force passing through a unit area perpendicularly. The magnetic flux density quantitatively reflects the density of the magnetic field lines. The Relationship between Magnetic Flux Density and Magnetic Flux When there is an angle θ between the vertical plane of S and B, Φ=B Magnetic flux is a physical quantity that represents the distribution of a magnetic field and is a scalar quantity. If there are two magnetic fluxes in opposite directions across a plane, then the magnetic flux in the plane is the algebraic sum of the magnetic fluxes in the opposite direction. The symbol of the magnetic flux is “Φ” and the unit is Weber (Wb). The product of the magnetic flux density B and the area S is called the magnetic flux passing through this plane, or magnetic flux for short. Suppose that in a uniform magnetic field with a magnetic flux density of B, there is a plane with an area S and perpendicular to the direction of the magnetic field. What is Magnetic Flux (Φ)? The Concept of Magnetic Flux (Φ) So what is Magnetic Flux (Φ)? In this article, we will try to answer this question. In the application of magnets, Magnetic Flux (Φ) is an important index to measure the performance of magnets, especially in the fields of motors, audio speakers, and so on. ![]()
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