CN201327530Y - Magnetic susceptibility measuring device based on enhanced Moses effect - Google Patents

Abstract

A magnetic susceptibility measuring device based on the enhanced Moses effect belongs to the field of measurement technology, and the device includes a magnetic field generating device, a temperature regulating device, an altimeter, a measuring container and a remote observation and recording system; the measuring container is located in the effective magnetic field generated by the magnetic field generating device In the space, the height measuring instrument is assembled on the plane transparent window of the measuring container. The magnetic susceptibility measuring device of the utility model can measure liquid magnetic susceptibility, solid magnetic susceptibility and gas magnetic susceptibility, has a wider magnetic susceptibility measurement range, and can measure the magnetic susceptibility of substances at different temperatures.

Description

A Magnetic Susceptibility Measuring Device Based on Enhanced Moses Effect

technical field

The utility model belongs to the technical field of measurement, in particular to a magnetic susceptibility measuring device based on enhanced Moses effect.

Background technique

Magnetic susceptibility is an important physical quantity that describes the magnetization properties of a substance. According to the electronic theory of matter structure, it can be proved that the magnetic susceptibility of matter has a very close relationship with its microstructure. By measuring the magnetic susceptibility of these substances, a lot of information about their microstructure can be obtained. Magnetic susceptibility has important applications in judging whether there are unpaired electrons in the substance molecule and the structure type of the complex. Calculating the number of unpaired electrons in a molecule by measuring the magnetic susceptibility of a substance is an effective method for studying the bonding situation in a molecule. In environmental systems, natural substances such as soil, rocks, sediments, atmospheric dust, and secondary substances produced by human activities often exhibit different magnetic characteristics, which are related to the magnetic type of minerals contained in the substance, the content of ferromagnetic grains, It is related to the size, composition and proportion combination, which to a certain extent reflects the comprehensive information of its parent material, generation environment, transportation process and deposition. Utilizing the differences and connections in the magnetic characteristics of substances in the environmental system and the environmental connotations indicated, it is possible to study the environmental processes, environmental effects and environmental problems at different time and space scales, and then reveal the history and mechanism of environmental evolution. Magnetic susceptibility measuring instruments are used in the determination of the electronic structure of substances, the measurement of the magnetic response of natural substances such as soil, sediment and rocks in environmental magnetism and the substances produced by human activities in artificial magnetic fields, the extraction of geological and geographical environmental information, and the magnetic The application in fields such as fluid magnetism, stability measurement and industrial gas analysis is of great significance. Therefore, magnetic susceptibility measuring instruments and equipment have attracted great attention of many scientific and technological workers.

At present, the methods for measuring the magnetic susceptibility of materials mainly include: magnetic balance method and AC mutual inductance method using electromagnetic principle. Measuring the magnetic susceptibility with the magnetic balance method is a routine physical measurement method. At present, there is no finalized product in my country, and most of the users are self-assembled by a precision microanalytical balance with a sensitivity of 0.1 mg, an electromagnet and a DC power supply. According to the different properties of the object to be measured, the magnetic balance method is divided into Gouy method, Quincke method and Faraday method. The Gouy method is suitable for measuring the magnetic susceptibility of paramagnetic or diamagnetic substances. It has the characteristics of simple equipment and easy operation, but it requires a large amount of samples and poor accuracy, so it is not suitable for measuring magnetic and superparamagnetic samples. The Quincke method does not need to measure the density of the sample separately, but it is only suitable for measuring the magnetic susceptibility of liquids and gases, and the required sample volume is also large. The above two methods are inconvenient to study the relationship between the magnetic susceptibility of the sample and the temperature change. The experimental steps of the Faraday method are cumbersome and the operation process is relatively complicated, which brings inconvenience to scientific research and engineering applications. The AC mutual inductance measurement method is mainly suitable for the measurement of metal magnetic susceptibility, which is highly targeted and the measurement object is relatively single. In recent years, new methods such as laser pendulum method and NMR bispectrometer method have been proposed to measure the magnetic susceptibility. However, these methods are more suitable for measuring the magnetic susceptibility of transition element ion compounds, and the scope of application is relatively narrow.

Utility model content

In view of the above existing technical problems, the utility model provides a magnetic susceptibility measurement device based on the enhanced Moses effect.

The magnetic susceptibility measuring device based on the enhanced Moses effect of the utility model includes a magnetic field generating device, a temperature regulating device, a height measuring instrument, a measuring container and a remote observation and recording system, the measuring container is located in the effective magnetic field space generated by the magnetic field generating device, and the measuring container is located in On the temperature adjustment device or inside the temperature adjustment device; the measuring container is a container with at least one flat transparent window, and the remote observation and recording system is a computer with a camera; the height measuring instrument is assembled on the flat transparent window of the measuring container, And the position can be adjusted on the plane transparent window as required.

When the bottom heating method is adopted, the measuring container is located on the temperature regulating device; when the temperature regulating device adopted is a cylindrical structure and is heated simultaneously from around the container, the measuring container is located inside the temperature regulating device.

The magnetic field generating device is a magnetic field generating device capable of generating a gradient magnetic field, the generated magnetic induction is 0 to 15T, and the magnetic field distribution of the magnetic field generating device is known.

The height measuring instrument selected by the utility model is a scale scale, and the selection standard of the video camera is the scale that can distinguish the scale scale from the image recorded by the computer.

The working principle of the utility model is:

The enhanced Moses effect means that the standard fluid B is placed on the fluid A to be tested, and the interface between the two fluids will produce very obvious deformation under certain magnetic field conditions. The expression of the deformation height of the interface is:

$\mathrm{<span\; class="notranslate">\; h</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\frac{<span\; class="notranslate">\; |</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="1"\; label="B"\; filenames="Y20082021918400101.png,Y20082021918400102.png"\; state="\{\{state\}\}">B</figure-callout></span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="2"\; label="B"\; filenames="Y20082021918400101.png,Y20082021918400102.png"\; state="\{\{state\}\}">B</figure-callout></span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; |</span><span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}{{\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; \&mu;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; \&rho;</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&rho;</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

In the formula, h is the height difference between two different deformation points of the interface, μ ₀ is the vacuum magnetic permeability, X ₁ is the volume magnetic susceptibility of the fluid to be measured, X ₂ is the volume magnetic susceptibility of the standard fluid, B ₁ and B ₂ are the magnetic induction intensity at two different deformation points of the interface, _ρ1 is the density of the fluid to be measured, _ρ2 is the density of the standard fluid, g is the local gravitational acceleration, _K1 is the correction coefficient calibrated according to the actual measurement conditions, is a dimensionless quantity.

By using a standard fluid with known magnetic susceptibility and density to form a mixed fluid with a fluid to be tested with a certain density, measure the height difference at two different deformation points of the interface between the two fluids under certain experimental conditions, and transform the formula (1) have to

${\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; \&mu;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; <figure-callout\; id="1"\; label="hg\; K"\; filenames="Y20082021918400101.png,Y20082021918400102.png"\; state="\{\{state\}\}">hg</figure-callout></span><figure-callout\; id="1"\; label="hg\; K"\; filenames="Y20082021918400101.png,Y20082021918400102.png"\; state="\{\{state\}\}">\; </figure-callout>}}{{\mathrm{<span\; class="notranslate">\; </span>}}_{}}{\mathrm{<span\; class="notranslate">\; \&rho;</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; -</span>\frac{{\mathrm{<span\; class="notranslate">\; \&mu;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; <figure-callout\; id="1"\; label="hg\; K"\; filenames="Y20082021918400101.png,Y20082021918400102.png"\; state="\{\{state\}\}">hg</figure-callout></span><figure-callout\; id="1"\; label="hg\; K"\; filenames="Y20082021918400101.png,Y20082021918400102.png"\; state="\{\{state\}\}">\; </figure-callout>}}{{\mathrm{<span\; class="notranslate">\; </span>}}_{}}{\mathrm{<span\; class="notranslate">\; \&rho;</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>$

From this formula, the magnetic susceptibility value of the fluid to be measured can be calculated. By observing the ups and downs of the interface, the magnetic properties of the fluid to be tested can be determined.

For the measurement of solid magnetic susceptibility, the solid to be measured can be prepared into a liquid (solution or colloid) with a certain volume, and the magnetic susceptibility of the liquid can be measured according to the principle of enhanced Moses effect. The relationship between the magnetic susceptibility of the same substance and different volumes is:

${\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}{\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\mathrm{<span\; class="notranslate">\; m</span>}}{\mathrm{<span\; class="notranslate">\; m</span>}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}{\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}\mathrm{<span\; class="notranslate">\; m</span>}}{\mathrm{<span\; class="notranslate">\; m</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; m</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; )</span>$

In the formula, X ₃ is the volume magnetic susceptibility of the corresponding liquid, X ₄ is the volume magnetic susceptibility of the solid to be measured, V ₁ is the volume of the corresponding liquid, V ₂ is the volume of the solid to be measured, m is the mass of the solid to be measured, and M is the mole of the solid to be measured Mass, X _M is the molar magnetic susceptibility of the solid to be measured, its value is a function of temperature, K ₂ is the correction coefficient for the deviation, which is a dimensionless quantity. After transforming the formula (3), we can get

${\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}\frac{{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}{{\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; )</span>$

Then the magnetic susceptibility of the solid to be measured can be obtained.

The magnetic susceptibility measurement method designed based on the enhanced Moses effect of the present utility model is:

The specific steps for measuring fluid magnetic susceptibility or solid magnetic susceptibility using the above magnetic susceptibility measuring device are as follows:

The fluid with known density and magnetic susceptibility is used as the standard fluid to determine the density of the fluid to be tested. When measuring the magnetic susceptibility of the solid, the solid to be tested is prepared into a solution or colloid as the fluid to be tested, and then the fluid to be tested and the standard fluid Put it in the measuring container, apply a magnetic field to the measuring container through the magnetic field generating device, set the temperature condition through the temperature regulating device, obtain the height difference between the two measuring points on the interface between the standard fluid and the fluid to be measured through the height measuring instrument, and then calculate The magnetic susceptibility of the fluid to be tested is obtained under the set temperature condition; the magnetic susceptibility of the fluid to be tested is calculated according to the formula (2).

When measuring the magnetic susceptibility of a solid, determine the volume of the solid to be measured, prepare the solid into a solution or colloid as the fluid to be tested, determine its volume and density, calculate the magnetic susceptibility of the solution or colloid to be tested according to the aforementioned method, and then use the formula (4) Calculate the magnetic susceptibility of the solid to be measured.

When the standard fluid and the fluid to be tested are not miscible, put the two fluids directly into the measuring container; A film should be added between the fluid to be measured, and the added film is required to be located between the standard fluid and the fluid to be tested, and there is no gas between the film and the two fluids.

The method for the height measuring instrument to measure the height difference between two measuring points on the interface is: measure the height of a measuring point on the interface of a plane transparent window relative to the bottom of the measuring container, which is the height of the first measuring point, and then change the position of the height measuring instrument to measure The height of another interface measurement point relative to the bottom of the measurement container is the height of the second measurement point; the first measurement point and the second measurement point are required to be under different magnetic induction intensities, and the difference between the first measurement height and the second measurement height is is the height difference h to be measured, and the magnetic induction intensities at the positions of the first measurement point and the second measurement point are B ₁ and B ₂ respectively.

The change in the height of the interface is collected by a camera and recorded in a computer. The selection standard of the camera is that the scale of the scale can be distinguished from the recorded image.

When it is necessary to measure the magnetic susceptibility of the substance at different temperatures, the temperature of the fluid to be measured in the measurement container is adjusted by the temperature adjustment device, and the magnetic susceptibility of the substance to be measured at different temperatures can be obtained according to the above method.

When the fluid to be measured is gas, the measuring container needs to be sealed; when measuring the magnetic susceptibility of the gas at temperature T ₀ , determine the density of the gas at temperature T ₀ and adjust the amount of gas added.

Standard fluid According to the positive and negative magnetic susceptibility of the fluid to be tested, two fluids, diamagnetic and paramagnetic, with known density and magnetic susceptibility can be selected respectively; or magnetic fluids with other densities with known magnetic susceptibility can be selected as the standard fluid.

The magnetic field generating device in the embodiment of the utility model is a superconducting strong magnetic field generating device, a commercially available permanent magnet or an electromagnet. The effective magnetic field space generated by the magnetic field generating device is the magnetic field intensity space at each point described in the product manual.

The standard fluid used in the utility model, depending on the positive and negative magnetic susceptibility of the fluid to be tested, can respectively select two fluids of diamagnetic and paramagnetic fluids with known density and magnetic susceptibility. In the actual measurement, in order to observe the phenomenon easily, the magnetic fluid of other densities with known magnetic susceptibility can also be selected as the standard fluid according to the needs.

The main advantage of the magnetic susceptibility measuring device of the utility model is: it can measure the magnetic susceptibility of liquid, solid magnetic susceptibility and gas magnetic susceptibility, which is different from the magnetic susceptibility measurement of ore, etc., and can measure the magnetic susceptibility of weak magnetic substances and magnetic fluids. Wide range of magnetic susceptibility measurement, and can measure the magnetic susceptibility of substances at different temperatures. The usage method of the magnetic susceptibility measuring device of the utility model is convenient to operate and has high accuracy.

Description of drawings

Fig. 1 is the schematic diagram of the front structure of the magnetic susceptibility measuring device in the implementation of the utility model;

Fig. 2 is the schematic diagram of the side structure of the magnetic susceptibility measuring device in the implementation of the utility model;

In the figure, 1. Magnetic field generating device, 2. Measuring container, 3. Camera, 4. Scale scale, 5. Standard fluid, 6. Fluid to be tested, 7. Temperature regulating device, 8. First measuring point, 9. Second measuring point.

Detailed ways

The height measuring instrument selected by the utility model is a scale scale with an accuracy of 0.001mm.

The measurement container in the embodiment of the utility model is a transparent cuboid container, and a side wall of the measurement container is used as a plane transparent window; at the same time, the volume ratio of the standard fluid and the fluid to be measured, the placement position of the measurement container and the selection of the magnetic induction intensity can ensure the interface. The highest deformation point is located on one side of the plane transparent window, the lowest deformation point of the interface is located on the other side of the plane transparent window, the highest deformation point is used as the first measurement point or the second measurement point, and the lowest deformation point is used as the second measurement point or The first measurement point for easy observation and calculation.

In the embodiment of the utility model, the temperature regulating device selects a resistance heater.

In the embodiment of the utility model, equal-volume standard fluid and fluid to be measured are used to facilitate observation and calculation, and the actual application is not limited to the use of equal-volume mixing.

Example 1

The magnetic susceptibility measurement device based on the enhanced Moses effect is shown in Figures 1 and 2. The magnetic field generator 1 is a JMTD-6T300 superconducting strong magnetic field generator, which is placed horizontally. A temperature regulating device 7 is placed in the cavity of the magnetic field generating device, and a measuring container 2 with a scale scale 4 is placed on the temperature regulating device 7. The measuring container 2 size (length * width * height) is 80mm * 30mm * 80mm. The height change of the interface between the standard fluid 5 and the fluid to be measured 6 injected into the container can be observed by the camera 3, and the camera 3 transmits the image to the computer for recording at any time, and collects the image data. The scale scale 4 measures the height difference between the first measurement point 8 and the second measurement point 9 of the interface, and the height change data of the interface between the two fluids can be obtained.

The organic substance benzene with known density and magnetic susceptibility is used as a standard fluid. The density of benzene is 0.8213g/cm ³ and the magnetic susceptibility is -8.900×10 ^-6 . Through accurate configuration, a copper sulfate solution with a density of 1.1328g/cm ³ is obtained, and its magnetic susceptibility literature value is 8.584×10 ^-6 .

Pour the prepared copper sulfate solution and equal volume of benzene (benzene is an organic substance with low density, in the upper layer of the copper sulfate solution, the two liquids are immiscible) into the measuring container, and apply a magnetic field to the measuring container through the magnetic field generating device, the magnetic field generating device The maximum magnetic induction intensity in the center of the interface is adjusted to 4.000T, the magnetic induction intensity at the position of the first measurement point of the interface is B ₁ , the magnetic induction intensity at the position of the second measurement point of the interface is B ₂ , and the value of B ₁ is 2.984T at this time, B The value of ₂ is 1.951T; the scale ruler is placed on the first measuring point of the interface and the second measuring point of the interface respectively, and the height of the two points is measured; after calibration, the correction coefficient K ₁ is 1 under the experimental conditions. Point the camera connected to the computer at the interface of the two liquids. After the liquid in the measuring container is stable, observe the changes of the interface of the two liquids through the camera, and obtain corresponding pictures by capturing pictures. The temperature condition is 20°C.

Through data collection and processing of the obtained pictures, it is found that the height difference between the first measurement point and the second measurement point of the mixed fluid interface is 11.607mm, and the magnetic susceptibility of the copper sulfate solution to be tested can be calculated by formula (2). After calculation, the magnetic susceptibility of copper sulfate solution with a density of 1.1328g/cm ³ is 8.568×10 ^-6 , which is a paramagnetic substance. The relative error between the measured value and the literature value is 0.19%, and the measurement accuracy is high, which meets the measurement requirements.

Example 2

The magnetic field generating device of the magnetic susceptibility measuring device based on the enhanced Moses effect is a JMTD-12T100 superconducting strong magnetic field generating device, which is placed horizontally, and the measuring container is a transparent container with high temperature resistance, and the container size (length×width×height) is 250mm × 30mm × 80mm, other parts of the measuring device are the same as in Embodiment 1.

Argon with known density and magnetic susceptibility is used as the standard fluid, and the magnetic susceptibility of argon at 670°C is -0.06053×10 ^-6 . The density of the liquid metal aluminum to be measured is 2.702g/cm ³ , and the document value of the magnetic susceptibility when the aluminum melts is 1.090×10 ^-6 . Put a certain amount of aluminum into a high-temperature-resistant transparent container, and its melted volume accounts for about 30% of the volume of the measuring container. Half, according to the standard that the density of argon gas at 670°C is 0.5170kg/m ³ , fill the container with quantitative argon gas, and then seal the container. The measuring container is heated by a temperature regulating device so that the internal temperature of the measuring container is 670°C, a magnetic field is applied to the measuring container by a magnetic field generating device, and the maximum magnetic induction intensity in the center of the magnetic field generating device is adjusted to 12.0000T, and the magnetic induction at the position of the first measuring point of the interface The intensity is B ₁ , and the magnetic induction intensity at the second measurement point of the interface is B ₂ . At this time, the value of B ₁ is 12.0000T, and the value of B ₂ is 1.8382T. The second measurement point on the interface is to measure the height of two points; after calibration, the correction coefficient K1 value is ₁ under the experimental conditions. The temperature condition during the measurement was 670° C., and other experimental operations were as in Example 1.

Through the data collection and processing of the obtained pictures, it is found that the height difference between the first measurement point and the second measurement point of the mixed fluid interface is 2.199mm, and the magnetic susceptibility of the liquid aluminum to be tested can be calculated from the formula (2). The calculation results show that the magnetic susceptibility of liquid aluminum is 1.101×10 ^-6 , which is a paramagnetic substance. The relative error between the measured value and the literature value is 1.0%, and the measurement accuracy is high, which meets the measurement requirements.

Example 3

The magnetic susceptibility measurement device based on the enhanced Moses effect is the same as that in Embodiment 1.

The organic substance benzene with known density and magnetic susceptibility is used as a standard fluid. The density of benzene is 0.8213g/cm ³ and the magnetic susceptibility is -8.900×10 ^-6 . Take copper sulfate powder with a mass of 13.25g, its volume is 3.6775cm ³ , and its magnetic susceptibility literature value is 3.760×10 ^-4 . Through accurate disposition, can obtain the volume and be the copper sulfate solution of ^100cm , experiment condition and experiment operation are the same as embodiment 1, the correction factor K value under this experiment condition _K is 1.61. After obtaining the magnetic susceptibility of the copper sulfate solution, the magnetic susceptibility of the copper sulfate solid powder can be obtained according to formula (4) to be 3.751×10 ^-4 , which is a paramagnetic substance, and the relative error with the literature value is 0.2%, and the measurement accuracy is relatively high. Meet the measurement requirements.

Example 4

The magnetic susceptibility measuring device based on the enhanced Moses effect selects a transparent container whose size (length×width×height) is 280mm×30mm×80mm as the measuring container, and the other parts of the measuring device are the same as in Embodiment 1.

Measurement of gas magnetic susceptibility. The organic substance benzene with known density and magnetic susceptibility is used as a standard fluid. The density of benzene is 0.8213g/cm ³ and the magnetic susceptibility is -8.900×10 ^-6 . The air density to be measured is 1.237kg/m ³ , inject benzene into the transparent container, its volume accounts for half of the volume of the transparent container, and then seal the transparent container. Apply a magnetic field to the transparent container through the magnetic field generator, adjust the maximum magnetic induction intensity at the center of the magnetic field generator to 6.000T, the magnetic induction intensity at the position of the first measurement point of the interface is B ₁ , and the magnetic induction intensity at the position of the second measurement point of the interface is B ₂ , at this time, the value of B ₁ is 6.000T, and the value of B ₂ is 2.166T. Place the scale ruler on the first measurement point of the interface and the second measurement point of the interface, and measure the height of the two points. After calibration, the correction coefficient K1 value is ₁ under the experimental conditions. The temperature condition is 20° C., and other experimental operations are as in Example 1.

Through data collection and processing of the obtained pictures, it is found that the height difference between the first measurement point and the second measurement point of the mixed fluid interface is -14.340mm, and the magnetic susceptibility of the air to be measured can be calculated by formula (2). The calculation results show that the magnetic susceptibility of air is 3.51×10 ^-7 , which is a paramagnetic substance and meets the measurement requirements.

Example 5

The magnetic susceptibility measurement device based on the enhanced Moses effect is the same as that in Embodiment 1.

Copper sulfate solution with known density and magnetic susceptibility is used as the standard fluid. The density of the copper sulfate solution is 1.1328g/cm ³ and the magnetic susceptibility is 8.584×10 ^-6 . The density of the magnetic fluid to be tested is 1.000g/cm ³ , and the magnetic fluid and the copper sulfate solution are mixed in equal volumes (the density of the magnetic fluid is small, and the two liquids are in the upper layer of the copper sulfate solution, and the two liquids are immiscible) and then injected into the measuring container. Apply a magnetic field to the measuring container through the magnetic field generating device, and adjust the maximum magnetic induction intensity in the center of the magnetic field generating device to 0.030T; the magnetic induction intensity at the position of the first measurement point of the interface is B ₁ , and the magnetic induction intensity at the position of the second measurement point of the interface is B ₂ , at this time, the value of B ₁ is 0.0224T, and the value of B ₂ is 0.0115T. Place the scale ruler on the first measurement point of the interface and the second measurement point of the interface respectively, and measure the height of the two points. After calibration, the correction coefficient K1 value is ₁ under the experimental conditions. The temperature condition is 20° C., and other experimental operations are as in Example 1.

Through the data collection and processing of the obtained pictures, it is found that the height difference between the first measurement point and the second measurement point of the mixed fluid interface is -10.670mm, and the magnetic susceptibility of the magnetic fluid to be tested can be calculated by formula (2). The calculation results show that the magnetic susceptibility of the magnetic fluid is 9.445×10 ^-2 , and the relative error with the product magnetic susceptibility value of 9.375×10 ^-2 provided by the manufacturer under the same conditions is 0.7%. The measurement accuracy is high and meets the measurement requirements.

Example 6

The magnetic susceptibility measurement device based on the enhanced Moses effect is the same as that in Embodiment 1.

Benzene with known density and magnetic susceptibility is used as a standard fluid. The density of benzene is 0.8213g/cm ³ and the magnetic susceptibility is -8.900×10 ^-6 . The density of the magnetic fluid to be measured is 1.000g/cm ³ . First inject a certain volume of magnetic fluid into the measurement container, add a film on the magnetic fluid, and fix the film on the container, and then inject an equal volume of benzene into the measurement container. Apply a magnetic field to the measuring container through the magnetic field generating device, and adjust the maximum magnetic induction intensity in the center of the magnetic field generating device to 0.060T; the magnetic induction intensity at the position of the first measurement point of the interface is B ₁ , and the magnetic induction intensity at the position of the second measurement point of the interface is B ₂ , at this time, the value of B ₁ is 0.045T, and the value of B ₂ is 0.029T. Place the scale ruler on the first measurement point of the interface and the second measurement point of the interface respectively, and measure the height of the two points. After calibration, the correction coefficient _K1 under the experimental conditions is 0.8. The temperature condition is 20° C., and other experimental operations are as in Example 1.

Through the data collection and processing of the obtained pictures, it is found that the height difference between the first measurement point and the second measurement point of the mixed fluid interface is 20.356mm, and the magnetic susceptibility of the magnetic fluid to be tested can be calculated by formula (2). The calculation results show that the magnetic susceptibility of the magnetic fluid is 9.459×10 ^-2 , and the relative error with the product magnetic susceptibility value of 9.375×10 ^-2 provided by the manufacturer under the same conditions is 0.9%. The measurement accuracy is high and meets the measurement requirements.

Claims (3)

1. A magnetic susceptibility measuring device based on the enhanced Moses effect, characterized in that: the device includes a magnetic field generator, a temperature regulating device, an altimeter, a measuring container and a remote observation and recording system, and the measuring container is located on the temperature regulating device or Inside the temperature regulating device and placed in the effective magnetic field space generated by the magnetic field generating device, the measuring container is a container with at least one plane transparent window; the remote observation and recording system is a computer with a camera; the height measuring instrument is assembled in the measuring on the flat transparent window of the container. 2. A magnetic susceptibility measuring device based on enhanced Moses effect according to claim 1, characterized in that the magnetic field generating device is required to be able to generate a gradient magnetic field, and the generated magnetic induction is 0 to 15T. 3. A magnetic susceptibility measuring device based on enhanced Moses effect according to claim 1, characterized in that said height measuring instrument is a scale.

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