A fast and accurate response - this can only
be achieved with a detector mounted on
each crankcase to detect the level of oil mist
at the source of the problem. This elimi
nates unnecessary pipe-work where oil mist
can condense and take time to travel to the
monitor.
b No false alarms - to make this possible
absorption must be replaced with light scatter
so that there can be no mistake between
oil mist and dirty lenses. Detailed explanation
of these terms is given later.