標準號：ISO 20998-2-2013
中文標準名稱：利用聲學法測量和表征粒子特性.第2部分:線性理論指南
英文標準名稱：Measurement and characterization of particles by acoustic methods.Part 2: Guidelines for linear theory
標準類型：A42
發布日期：2013/8/15 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：A42
國際標準分類號：19.120
引用標準：ISO 14488-2007;ISO 20998-1-2006
適用范圍：This part of ISO 20998 describes ultrasonic attenuation spectroscopy methods for determining the size distributions of a particulate phase dispersed in a liquid at dilute concentrations, where the ultrasonic attenuation spectrum is a linear function of the particle volume fraction. In this regime, particle–particle interactions are negligible. Colloids, dilute dispersions, and emulsions are within the scope of this part of ISO 20998. The typical particle size for such analysis ranges from 10 nm to 3 mm, although particles outside this range have also been successfully measured. For solid particles in suspension,size measurements can be made at concentrations typically ranging from 0,1 % volume fraction up to 5 % volume fraction, depending on the density contrast between the solid and liquid phases,the particle size,and the frequency range.