Density measuring method based on magnetic Archimedes principle

Abstract

The invention discloses a density measuring method based on magnetic Archimedes principle, comprising the following steps: (1) a medium solution is determined according to the material of a sample, and the medium solution is a paramagnetic medium aqueous-solution; (2) the sample is placed into the medium solution; (3) the medium solution is placed into a magnetic suspension detector, which has two homopolar opposite square magnets; (4) suspension height of the detected sample is measured; and (5) density of the sample is calculated. In comparison with the prior art, the invention has the following beneficial effects: the device in demand is simple to operate; cost is low; measurement results are easy to observe; measurement accuracy is high; and automation is easy to realize.

Description

technical field [0001] The invention relates to a density detection method, in particular to a density measurement method based on the magnetic Archimedes principle. 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. [0003] Density is defined as the amount of matter per unit volume. The buoyancy principle discovered by Archimedes 2200 years ago is the basic principle of most existing density measurements. Different density measurement methods are based on the basic calculation formula of density: ρ=M / V. [0004] Commonly used measurement methods are buoyancy method, pycnometer method, density meter me...

AI Technical Summary

Problems solved by technology

[0007] For the Archimedes principle and its derivative methods, it is usually difficult to measure the density to achieve higher precision. The existing density detection method, to achieve high-precision measurement, usually requires the use of expensive measuring equipment

Moreover, the measurement method based on Archimedes' principle is usually not sensitive to small-sized samples, which is likely to cause large measurement errors

While other density measurement methods are applied to newer technical methods, the measurement equipment is more expensive, and the operation and calculation methods are cumbersome, and the application development of density measurement for small-sized samples is relatively limited.

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