OILSPY detects floating hydrocarbons thanks to a polymer
membrane that is held in tension between an upper moving
axis and a lower fixed axis.
When in contact with hydrocarbons, the membrane
dissolves, releasing the upper moving axis. This axis activates
a contact relay mounted on the electronic board inside the
OILSPY.
The "all or nothing" contact (dry contact) is opened, the
current loop passing through the detector is opened and this
triggers an alarm. This alarm is then transmitted by electric
cable or radio to either a standard OILSPY Alarm Station
(see sheet n° 09) or directly to the end user's control system.