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Waterproofing


The waterproofing of the sensors

Because water is conductive, the branches of each metal sensor should not be indirect contact with water.

To seal the device sensors, we have introduced pieces of PVC pipes of diameter 10mm and then we put a cap on each side of the tube (on the caps, we made a hole forthe wire connected to the buoy), then we all drowned in the marine glue to preventinfiltration.


This device, installed at 2 m, 10 m and 20 m deep, was finally chosen after extensive testing of different adhesives and assembly systems unsuccessful.


Inside the buoy

We also conducted tests to find solutions to fill the empty space in the ring.
We Solicitating completed a plastic ball (previously closed using glue: see photo) withexpanded foam.



The problem is that the foam has been liquefied.



Tests directly on the buoy were also carried out in a garbage can and we should testsoon buoy the leisure Etampes and late May in La Rochelle.



In order to close the buoy and to isolate it from the water with certainty, we also testeddifferent glues on balls in plastic, prefilled with copper sulphate.



Home Video project | History projectThe Gulf Stream | Experiences Ocean |
|Structure of the buoy  | Sensors | Hera case | PCB| Argos system | Waterproofing| Results collected |
| Supporting Doc  |  Photos  |  Contests | Links |