How does oil mist detector work?
The oil mist detector uses a photoelectric cell to measure small increases in oil density. A motor driven fan continuously draws samples of crankcase oil mist through a measuring tube. An increased meter reading and an alarm will result if any crack case sample contains excessive mist when compared to either clean air or to the other crankcase compartments. The rotary valve which draces the samples then stops to indicated the suspect crankcase compartment.
The alarm will cause an engine slowdown or shut down.
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