The oil particle counter is specifically designed to detect particulate contaminants in oil. Using the principle of light scattering or light blockage, when oil flows through the detection area, the particles in it scatter or block light, and the instrument precisely calculates the number of particles of different particle sizes by analyzing changes in the light signal. The outer shell is mostly made of high - strength, oil - corrosion - resistant materials, and the internal optical and electronic components are specially treated to adapt to the oil environment. Its advantage lies in its high detection accuracy, capable of detecting tiny particles; fast detection speed, enabling real - time online detection; and little impact on oil performance. It is widely used in fields such as hydraulic systems, lubrication systems, and power transmission systems to ensure the normal operation of equipment and extend the service life of equipment.