13.540 - Manual for Gravity corer
5
Piston corer option:
8
Requires the extension 13.560 (optional), see item
9 for details.
The principle for operating the piston corer
function:
An AISI 316 stainless steel heavy-duty releaser
(pos. 1), based on the Kullenberg principle, is
mounted at the top. The corer supports a
maximum of 10 lead weights (pos. 4) each 28 kg.
The upper part of the corer is made of AISI 316
stainless steel.
The corer tube (pos. 9) is made either of AISI 316
stainless steel (Ø104/Ø99 mm), or transparent
PVC plastic (Ø110/Ø99 mm). At the end of the
releaser hook (pos. 1); the 30 kg release weight
(pos. 7) is mounted.
A piston with a leather seal, (pos. 8) is positioned
at the bottom of the corer tube. The piston is
connected to the releaser (pos. 1) by an Ø8 mm
stainless steel AISI 316 wire. During the
deployment the corer tube (pos. 9) is released 1,7
m above the sediment as the releaser weight
reaches the sediment surface.
The wire (pos. 8), which has a slack of about 1 m,
allows the corer tube to fall free until the piston
(pos. 7) is activated just before the corer tube
enters the sediment. The total weight load can
regulate the depth of penetration. (pos. 4).
1 - Kullenberg releaser
2 - Wire (Ø8 mm) for piston
3 – Steering fins
4 – Lead weight
5 – Lock for corer tube
6 – Wire (Ø5 mm) for Kullenberg releaser and 30
kg weight station
7 – 30 kg weight station
8 – Piston
9 – Corer tube
14 – Safety split
