GB/T 21649.2-2025Particle size analysis—Image analysis methods—Part 2:Dynamic image analysis methods (English PDF)

Foreword

The following parts have been issued for GB/T 21649, Particle size analysis - Image analysis methods:

-- Part 1: Static image analysis method;

-- Part 2: Dynamic image analysis methods.

This Part is Part 2 of GB/T 21649.

This Part is drafted in accordance with the rules given in GB/T 1.1-2009.

This Part is identical to ISO 13322-2:2006 Particle size analysis - Image analysis methods - Part 2: Dynamic image analysis methods by the translation method.

The documents of our country that have a consistent correspondence with the international documents referenced in this Part are as follows:

-- GB/T 21649.1-2008, Particle size analysis - Image analysis methods - Part 1:

Static image analysis method (ISO 13322-1:2004, MOD) this Part makes the following editorial changes:

-- Correct "methods" in Clause 1 Scope of the international standard to "method", and "these methods" to "the method".

This Part is put forward by and shall be under the jurisdiction of National Technical Committee 168 on Screening and Particles Screen Analysis of Standardization Administration of China (SAC/TC 168).

Drafting organization of this Part: Beijing Society for Powder Technology, Beijing Physical and Chemical Analysis and Testing Center, Dandong Bettersize Instruments Ltd., National Center for Quality Supervision and Inspection of Non-metallic Mineral Deep Processing Products, China Productivity Center for Machinery, Beijing Hai'an Hongmeng Standard Substance Technology Co., Ltd., Chizhou Daheng Biochemical Co., Ltd., National Institute of Metrology, Spectris Instrumentation and Systems Shanghai Ltd., National Center for Nanoscience and Technology, Shanghai Anlikang Science Instrument Co., Ltd.

Main drafters of this Part: Zhou Suhong, Zhang Tao, Zhang Lixin, Dong Qingyun, Gao Yuan, Yu Fang, Pan Junjie, Song Zhengqi, Hou Changge, Zhang Wenge, Qin Heyi, Liu Junjie, Fang Qin, Li Zhaojun, Wang Hai, Fang Rong, Ma Jiang, Li Li, Hou Zhiyun, Gao Jie, Qi Xiaoying, Zhang Chaoyi, Wang Xiaobing.

Particle size analysis - Image analysis methods - Part 2:

Dynamic image analysis methods

1 Scope

This Part of GB/T 21649 describe a method for controlling the position of moving particles in a liquid or gas and on a conveyor, as well as the image capture and image analysis of the particles. The method is used to measure the particle sizes and their distributions, the particles being appropriately dispersed in the liquid or gas medium or on the conveyor.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 13322-1:2004 [Translator's note: should be ISO 13322-2:2004], Particle size analysis - Image analysis methods - Part 2: Dynamic image analysis methods

3 Terms, definitions and symbols