An oil particle counter is a precision condition monitoring instrument used to measure and classify solid contaminants in hydraulic oil, lubrication oil, and other industrial fluids. It helps identify abnormal wear, dirt ingress, filter performance issues, and contamination-related risks before they lead to component damage or system failure.

Regular oil cleanliness testing supports predictive maintenance for hydraulic power units, gearboxes, turbines, compressors, pumps, and other critical machinery. Portable analysis makes it easier to take reliable readings at the machine location and maintain fluid cleanliness according to operating requirements.