污染度、颗粒度、清洁度

The "pollution level" we often refer to refers to the solid particle pollution level, which is the content of solid pollutants of different particle sizes in a unit volume of liquid; Particle size is the abbreviation for the particle size distribution of all particulate matter, which includes powder particle size, gas particle size, liquid particle size, etc. Pollution level and particle size are both mathematical representations of particle swarm, but they are different in engineering applications. The main differences are as follows:

1) Particle size endows metrology concepts, while pollution level is an engineering measurement characteristic that characterizes fluid quality;

2) The particle distribution characterized by particle size may be monodisperse or polydisperse; The particle distribution characterized by pollution degree must be polydisperse;

3) The pollution level of the same particle size may not be the same for different grade standards; The specific particle size values of liquid samples with the same pollution level may also vary;

4) The particle size expressed by the particle metric value can be a defined diameter, while the particle size expressed by the pollution metric value is characterized by the projected equivalent circle diameter or projected maximum chord length of the particle according to different pollution level standards;

5) Particle size is analyzed by the distribution of particle groups, while pollution level is expressed by the particle size, number, weight, or corresponding level specified by standards per unit volume.

With the continuous improvement of pollution control technology in fluid systems, the value of solid pollution level has been widely recognized and popularized. The international standard of "fluid pollution level classification" has been formulated, and China has also designated national standards and national military standards accordingly. These standards divide the pollution level into several levels based on the number of particles in each size range. With these classification standards, people can accurately guide the testing, analysis, and evaluation of the pollution level of working fluids according to regulations.

在线表单

A Brief Discussion on the Relationship between Pollution Level and Particle Size