Deep-sea resistance
PenetrometerThis penetrometer is used for soil analysys
in the deep sea. A carrying cable connects
it to the ship. The penetrometer is provided
with its own battery, which allows automatic
working up to 6,000 metres of sea
depth. For the geotechnical research, a
tube with a measuring unit at its end is
driven with rotational movements up to
50 metres into the sediment. An energy
cable inside the tube provides the
measuring unit with energy, also data
cables are inserted there. The designers
used a twisterband e-chain® from igus®
and robust chainflex® cables that are
corrosion-resistant as well, so that the
cables cant screw in or break.
IFREMER, Paul Jégou, Plouzane, France
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