Laser Particle Size Analyzer

In the propagation of light, the wavefront is limited by apertures or particles that are equivalent to the wavelength scale, and diffraction and scattering of the energy of the diffraction and scattering are generated in the space by the emission of the source waves of the confined wavefront as the source. The (angle) distribution is related to the wavelength of the light wave and the dimensions of the pores or particles. With a laser as the light source, the spatial (angle) distribution of the diffracted and scattered light energy is related only to the particle size after the light has a monochromatic light with a certain wavelength. The diffraction of the particle group determines how much each particle level corresponds to the light energy obtained at each particular angle. The proportion of each specific light energy in the total light energy should reflect the abundance of each particle level. According to this idea, a mathematics and physical model that characterizes the abundance of the particle size class and the light energy obtained at each specific angle can be established, and then the instrument can be developed to measure the light energy. The comparison of the light energy measured at a specific angle with the total light energy can be used to derive the particle group. The abundance ratio of the corresponding particle size class.

The laser particle size analyzer adopts the wet dispersion technology. The mechanical agitation makes the sample evenly dispersed. The ultrasonic high-frequency oscillation makes the agglomerated particles fully dispersed. The electromagnetic circulating pump makes the size particles evenly distributed in the entire circulation system, thus fundamentally ensuring the wideness. Accurate repetition of distributed sample tests.

The test operation is simple and quick: put the dispersion medium and the sample to be tested, start the ultrasonic generator to fully disperse the sample, and then start the circulation pump. The actual test process is only a few seconds. The test results are displayed, printed and recorded in the form of a particle size distribution data table, distribution curve, specific surface area, D10, D50, D90, and the like.

The output data is rich and intuitive: The software of this instrument can run on various computer windows platforms. It has the characteristics of simple and intuitive operation. It not only dynamically detects the sample, but also has powerful data processing and output functions. Users can choose and design the ideal Table and graphics output.

Laser Particle Size Analyzer Laser Particle Size Analyzer According to the dispersion system, the laser particle size analyzer can be divided into wet test equipment, dry test equipment, wet and dry test equipment, and special-purpose instruments such as spray laser particle size analyzer and online laser particle size analyzer. The domestic technology development of the analyzer has started since 1982, when the National Project No. 7 National Science and Technology Research Project “Cement Grain Gradation Online Analyzer” [1] started, and China has been researching this technology for nearly 30 years. Currently, Jinan Micron Particles Technology Co., Ltd. [2] has the most technological research in the country. Currently, its research and development of wet and dry laser particle size analyzer is the only one in the country and reaches the world's advanced level. The research of the nano-laser particle size analyzer using dynamic light scattering principle is The only one in China at present is to fill the gap in domestic technology; the online laser particle size analyzer it researches is also the only company in the country that can do this project at present, and is certified by the country as the international advanced technology level in the 1990s.

The main indicators of the laser particle size analyzer: Test range, accuracy, repeatability, lasers, dispersion systems, optical systems.