Level monitor for light liquid flowing as a layer on a bath of heavy liquid

摘要

The monitoring of an outflow of leakage oil in a leakage oil tank (1) exposed to the access of rainwater is effected by a heavy main float (11) which can float only in water and supports a switch float (13) which can also float in oil. The switch float (13) actuates the warning display irrespectively of its position relative to the main float (11). <IMAGE>