Particle Counting and Shape Recognition for In-Service Oils
Particle counting is done mainly as a cleanliness check to in-service hydraulic oils, steam turbine oils and other applications in which wear is minimal. The particles counted in these relatively clean oils are usually assumed to be contaminant particles, not wear particles. In-service lubricating oils from other applications such as gears, transmissions and engines are typically not subjected to particle counting. The LaserNet Fines (LNF) was developed primarily to detect abnormal wear in samples containing high particle concentrations and samples that may be black from diesel engine soot. These are samples that are not conveniently monitored by conventional automatic particle counters.