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Precise measurement method for density of antimagnetic material

An accurate measurement and diamagnetic technology, applied in the field of detection, to achieve the effect of easy automation, low cost and high measurement accuracy

Active Publication Date: 2017-04-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problems of the existing methods for measuring density, and based on the magnetic levitation theory, proposes an accurate measurement method for the density of diamagnetic substances based on the magnetic-Archimedes principle

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  • Precise measurement method for density of antimagnetic material
  • Precise measurement method for density of antimagnetic material

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Embodiment Construction

[0029] In order to make the present invention more clearly understood, the present invention will be further described below according to specific examples and accompanying drawings of the present invention.

[0030] like figure 1 Shown is the principle diagram of the magnetic levitation device of the present invention, including a magnet 1, a magnet 4, a medium solution 2, a sample 3, and a medium solution container 5. The container 5 is required to be transparent and easy to measure the height of the internal sample. The distance between magnet 1 and magnet 4 is d. The suspension height of the tested sample 3 in the solution is Z.

[0031] Both magnet 1 and magnet 4 are square magnets of 50mm*50mm*25mm, magnets with a magnetic induction intensity of 0.425T on the center surface, and are formed with opposite poles at a distance of 60mm.

[0032] Among them, the measurement method is as follows:

[0033] A method for accurately measuring the density of a diamagnetic substa...

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Abstract

The invention discloses a precise measurement method for the density of an antimagnetic material. The precise measurement method comprises: (1) determining a medium solution according to a sample material; (2) placing the sample in the medium solution; (3) placing the medium solution in an electromagnetic levitation detection device, ie., placing between two square magnets, wherein the same magnetic poles of the two square magnets are oppositely placed, the sizes of the two square magnets are 50 mm*50 mm*25 mm, and the distance between the two square magnets is 60 mm; (4) measuring the floating height of the measured sample; and (5) calculating the sample density. Compared to the method in the prior art, the method of the present invention has the following advantages that the operation of the required device is simple, the cost is low, the measurement result is easy to observe, the measurement precision is high, and the automation is easily achieved.

Description

technical field [0001] The invention relates to a detection method, in particular to an accurate measurement method for the density of a diamagnetic substance. Background technique [0002] Density is one of the most basic and important physical characteristics of matter, and the density of different substances is generally different. At the same time, different internal microstructures and material compositions will also be reflected in changes in density at the macro level. The measurement of density is of great significance in scientific research, production process and life. The buoyancy principle discovered by Archimedes 2,200 years ago is the most widely used method for density detection, and its derivative methods include: dipping method, pycnometer method, floating-sinking method, density gradient column method and density meter method. In recent years, based on new technologies, the gas pressure difference method, ultrasonic method, ideal gas state equation method...

Claims

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Application Information

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IPC IPC(8): G01N9/14
CPCG01N9/14
Inventor 赵朋颉俊张承谦傅建中
Owner ZHEJIANG UNIV
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