BeVision D2

1) Why Image Analysis Method?

• Easy
  Capture an image of particles, identify particles, then measure their size and shape. Every step of image analysis is easy and clear.

• Shape analysis
  Based on a direct view of particles, it is possible to analyze not only the size of particles, but also their shape. 

• Seeing is believing
  The image analysis method determines the size and shape of every individual particle and then sums it up to form a statistic. Details of particle size or shape distribution can be accurately provided.

2) Why Dynamic Image Analysis Method?

• Efficiency
  A continuous particle flow passing through the measurement zone helps achieve a higher efficiency of the measurement.

• Oversized particle sensitivity
  The dynamic image analysis method is sensitive to oversized particles; it is even possible to estimate the size of oversized particles.

• Reliable results
  The maximized number of measured particles ensures the statistical significance of measurement results.

3) BeVision D2 Hardware: Guaranteed Accuracy and Efficiency for You

To measure the size and shape of particles over a great variety of applications, the BeVision D2 has equipped with a comprehensive range of hardware. Corresponding to the sample material properties, selecting the best hardware can help measure the size and shape of particles with optimum accuracy and efficiency.

4) Particle Size and Shape Parameters：

• Size parameters
  Equivalent diameters: area-equivalent diameter、perimeter-equivalent diameter;
  Feret diameters: maximum and minimum Feret diameters,  XLF ("length") 
  Martin diameters: maximum and minimum Martin diameters;
  Legendre ellipse: major and minor axes

• Shape parameters
  Size difference in 2 directions: aspect ratio、L/W ratio、ellipse ratio;
  Round-likeness and rectangle-likeness: Circularity、irregularity、compactness、extent、box ratio
  Contour concavity: Concavity、convexity、solidity;
  For elongated particles: Elongation、straightness

5) BeVision Software: Visualized Insights for You：

6) Typical Applications:

Dry dispersion provided by BeVision D2 particle size analyser makes it suitable for a diverse range of applications.

1) Accuracy Calibration

Use the scale to verify accuracy and convert the pixel to actual size during the test and analysis. Ensure the results are accurate and reliable.

2) Recognize Connected Paticles

The main purpose of the function is to filter agglomerate or adhesive particles, in order to avoid that test result is affected. Connected particles refer to agglomerate particles forming by two or more than two adhesive particles. The feature of connected particles is that there is sunken area in particle image. Through judging the size, depth and angle of the sunken area, connected particles can be recognized.

3) Automatic Circulation and Dispersion System

The dry system adopts electromagnetic vibration feeding, gravity-driven dispersion, which ensures sampling is uniform and continuous.

4) Application of BeVision D2 particle size analyzer

Dry method: Applies to analyze granular samples between 30 um to 10 mm, such as salt, sugar, plastic products, catalyst, abrasive, carbon products, sand, coal, coffee, refractory, food, polystyrene, glass, ceramics, fertilizer, medicine, ore, etc.

5) Imaging Theory of Free Falling Particles

Adopts high-speed CCD camera-120 images per second, microsecond exposure time, avoid trailing phenomenon in moving particle. More than 10 thousand particles could be analyzed per minute by the special image processing software of these dynamic image particle analyzers. During the process of free falling of particles, shoot particle images which pass the lens randomly. Meanwhile, software quickly recognizes and processes particles, and screen displays images, particle size and particle shape data for each particle in real time. As it adopts high-speed CCD that can reach 100frame/min, thousands of particles can be shot and processed per minute, and image process software can recognize and extract adhesive particles automatically. These technologies improve analysis speed, precision and accuracy of particle image greatly. As one of the professional particle size analyzer suppliers in China, Bettersize has been striving to provide our customers with high quality particle size analyzer.

Image Analysis

The term “image analysis” is describing the mechanism: the image analyzer will capture an image of a 3-D particle first, then do the analysis based on the 2-D particle projection image. Depending on the movement state of particles during the measurement, the image analysis method is divided into 2 kinds: one is the dynamic image analysis method (DIA), and another is the static image analysis method (SIA).