Specific susceptibility tester

Abstract

The invention discloses a specific susceptibility tester. Existing related devices for testing specific susceptibilities are small in type and number, and similar instruments with related functions have the defects that testing periods are long, a great deal of labor is needed, the price is high or measurement accuracy is low. The specific susceptibility tester comprises an electromagnetism exciting system, a measurement support device, a digital measurement mechanism, a digital magnetic field measurement mechanism, an electrical control device and an automatic measurement software system. The specific susceptibility tester is simple in structure and convenient to use, and can automatically test the specific susceptibility of a substance. The specific susceptibility tester is stable in performance, can automatically adjust the magnetic field environment, collects and processes digital information of a transmission end, and synchronously displays testing data and plane rectangular coordinate images. The specific susceptibility tester is short in testing period, low in power consumption, high in measurement accuracy and capable of automatically generating testing reports.

Description

technical field [0001] The invention relates to a device for measuring the specific magnetic susceptibility of a substance, in particular for measuring the specific magnetic susceptibility of a weakly magnetic substance. The instrument automatically adjusts the magnetic field strength, automatically controls the measurement mechanism, automatically collects measurement data, automatically calculates and processes, automatically displays the measurement results, automatically generates measurement coordinate images and complete measurement reports. Background technique [0002] The specific magnetic susceptibility coefficient is the magnetic moment produced by a unit mass of ore particles in an external magnetic field of unit strength. It more accurately represents the magnetism of an object. The magnetic susceptibility coefficient has important applications in judging whether there are unpaired electrons in the substance molecule and the structure type of the complex. The d...

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Problems solved by technology

[0003] The magnetic balance and the simple specific susceptibility measuring instrument are instruments that directly measure the specific magnetic susceptibility of the material by the mass-dynamic method. Although they can measure the specific magnetic susceptibility of the material, there are problems such as small material test range, large mechanical test error, long test period, and The disadvantage of low precision

The VSM series developed in the United States and the BHV series vibrating sample magnetometer developed in Japan measure the magnetization coefficient of the material indirectly according to the magnetic effect of the sample in the magnetic field space. And the overall stability is damaged to a certain extent, which reduces the accuracy of the test; at the same time, the ultra-high vibration frequency required by the vibration device is not easy to control, which affects the control of the measurement and the accuracy of data acquisition, and the magnetic field of the vibrating sample The test results of the magnetometer directly include the material specific susceptibility parameters, and cannot directly generate magnetic field strength-specific magnetic susceptibility, magnetic field strength-specific magnetization coordinate images; the vibrating sample magnetometer needs an additional cooling system when testing in a high magnetic field strength environment. On the one hand, it will increase the equipment footprint, on the other hand, it will increase energy consumption and maintenance costs; the vibrating sample magnetometer, as an imported equipment, has a serious problem of high price, and the limitation of application limits the progress of domestic specific magnetic susceptibility research work

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