Metal particle detector system for e.g. piston engine, has set of electromagnetic metal particle detectors connected with control circuit and electrically switched together in parallel, where detectors have different electrical resistances

摘要

The system has a set of electromagnetic metal particle detectors (1-3), whose electrical resistances are changed during the presence of metal particles. The electromagnetic metal particle detectors are connected with a control circuit (4), and are electrically switched together in parallel. The individual metal particle detectors have different electrical resistances.