This alarm system consists of level alarm sensor, I.S barrier and
alarm panel. When the liquid level reaches a set point, the reed switch
in the alarm sensor is actuated by magnetic float. This signal is
connected to alarm annunciator through safety barrier. At the same
time, we can get audible and visible alarm on the main alarm panel
as well as external alarm on the bridge top. The 95% of volume is
normally for high alarm and 98% of volume is normally for overfill
alarm.