Introduction of BeVision D1
BeVision D1 dry image particle size and shape analysis system mainly applies to the analysis fields of particle size and particle shape of coarse and granular material. It adopts advanced hardware technology including electromagnetic vibration feeding system, high light LED array light source, imported high speed CCD, little phrase difference telecentric lens, etc. 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 100 frame/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.
Application of BeVision D1
-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.
-The conditions and fields which BeVision D1 is not applicable: a) Fine powders, generally refer to the samples that D50 is less than 30 um, such as metal ore powders, cement etc. b)Slurry, paste and strong adhesive granular materials such as ion exchange resin and wet sand. c) Products that can physically or chemically react with the air. d) Samples which contain particles that particle size is more than 10 millimeter or less than 30 micron.
Repeatability
Excellent repeatability is achieved thanks to:
- Stable and effective feeding system.
- Stable and reliable CCD image transmission system.
- Intelligent software can identify over 10000 particles per minute, automatic reorganization of
agglomerated powder to achieve accurate results.
Repeatability verification:
a) Repeatability of continuous tests for same sample
About Repeatability
Repeatability is primary index of particle size analyzer. It is worthless for particle size analyzer if repeatability is not good. Repeatability is related to the instrument, also, related to the operator, voltage, water quality and interference. It is a reflection of integrated factors.
b) Repeatability of re-sampling test
Accuracy
Excellent accuracy is achieved thanks to:
- Adopts high speed CCD, it can shoot 100 images per second, and more than 10 thousand particles could be analyzed per minute.
- Through the scale to calibrate the accuracy of the system, so analysis result is accurate and reliable
- Complete sample preparation system, including functions of electromagnetic vibration feeding, “particle waterfall” formed by scattering mode of particle free falling, etc.
- To filter agglomerate or adhesive particles through the function of recognizing connected particles, in order to avoid that the test result is affected.
Verifications of accuracy:
a) Accuracy which approved by China National Accreditation: Satisfactory
b) Test results compare with overseas advanced image analysis analyzer: Good consistency.