Application of Telecentric Lens in Dynamic Particle Size Analyzer

The particle size analyzer is an instrument for measuring the size and distribution of solid particles by physical methods. It is widely used in cement, ceramics, pharmaceuticals, emulsions, coatings, dyes, pigments, fillers, chemical products, catalysts, drilling mud, abrasives, and lubrication Agents, coal powder, mud, sand, dust, cells, bacteria, food, additives, pesticides, explosives, graphite, photosensitive materials, fuels, inks, metal and non-metal powders, calcium carbonate, kaolin, coal water slurry and other powdery materials .

According to different measurement principles, particle size analyzers are divided into laser particle sizers and particle imagers. Their measurement principles are different, so each has its own advantages and disadvantages. The particle imager has two static and dynamic test methods. The static method uses a modified microscope system and a high-definition camera to intuitively reflect the image of the particle sample on the computer screen. With related computer software, it can calculate the particle size, shape, overall distribution and other attributes, and can test results. The output is a report. The dynamic method has the dual analysis capabilities of morphology and particle size distribution, reconstructed the dispersion system and software data processing module, and solved the disadvantages of tedious sample preparation, poor sampling representativeness, and particle adhesion of the static particle imager. In both particle imagers, high-resolution industrial cameras are required. The latter uses a high-precision optical lens, a telecentric lens. This article will mainly introduce you to its structure and working principle.

Particle size analyzer

The particle size analyzer of a certain brand in the above picture is taken as an example. It uses a 500W progressive scan CCD industrial camera, which can provide a high resolution of 2456 * 2048, and adopts the current popular gigabit network interface. This camera ensures that the particle size analyzer can obtain high quality. Live image. At the same time, the most important thing is that in order to meet the detection requirements of different fields of view, this particle size analyzer is equipped with four telecentric lenses with different magnifications. The field of view has a minimum field of view of 6.4 * 4.8mm and a maximum of 64 * 48mm. The particle size measurement accuracy is from 20um- 150um varies. With the combination of these cameras and lenses, the particle size analyzer can obtain real-time images of the measured objects in different measurement ranges and send them to the particle size measurement software for processing. The measurement results are obtained in real time and incorporated into the database management software to achieve the customer's final requirements.

Telecentric lens

There are fewer manufacturers that can provide such high-precision particle size analyzers with telecentric lenses. BTOS is one of the best. BTOS has independent and dual-sided telecentric lens product lines with independent intellectual property rights. It has strong production research and development capabilities, product accuracy and stability. It has high performance and guarantees the measurement accuracy of the particle size analyzer from the root. It is a better choice for the lens of the particle size analyzer. Welcome to contact iJUNCO.