KC piston corer Application: The Piston corer takes up to 2 meters deep undisturbed samples from soft sediment and up to 4 meters deep samples from muddy sediment. Description: Position numbers refer to the schematic at the left. An AISI 316 stainless steel heavy duty releaser (pos. 1), based on the Kullenberg principle, is mounted at the top. Up to 10 lead weights (pos. 4) of 28 kg each can be mounted. The upper part of the corer is made of AISI 316 stainless steel The corer tube (pos. 9) is either made of AISI 316 stainless steel  (ø104/99mm) or transparent PVC plastic (ø110/99 mm). At the end of the releaser hook (pos. 1) the 30 kg release weight (pos. 7) is mounted. At the bottom of the corer tube a piston (pos. 8) with a leather seal is positioned. The piston is connected to the releaser (pos. 1) by a ø8 mm AISI 316 stainless steel wire. During operation the corer tube (pos. 9) is released 1.7 meter above the sediment as the releaser weight reaches the sediment surface. The wire (pos. 8), which has a slack of about 1 meter, allows the corer tube to fall free until the piston (pos. 7) is activated just before the corer tube enters the sediment. The penetration depth can be regulated by the total weight load (pos. 4). When the sample is to be retrieved, the tube is positioned at two trestles and a piston rod (pos. 12), operated by an AISI 316 stainless steel ratchet, presses out the sediment sample for slicing.
Schematic of the piston corer, operating at the sea bed
Technical data:     Description Dimensions Ordering No. (4) Piston corer complete, only five lead weights. Consisting of 1 - 8. Total weight of main rack 270 kg. Please note: Corer tube(s) (9) are not included. Please order separately. Can be delivered as AISI 304/AISI316 stainless steel or transparent PVC. Length excl. tube 1.7 m 13.600 (9) Tube AISI 304 stainless steel  (O.D./I.D. x L) 104 / 99 mm x 2.2 m.  Weight 12 kg. 104 / 99 mm x 4.2 m.  Weight 23 kg. 13.702 13.704 (9) Tube transparent PVC (O.D./I.D. x L) 110 / 99 mm x 2.2 m. Weight 6 kg. 110 / 99 mm x 4.2 m. Weight 11 kg 13.802 13.804 (10) Tube detacher, weight 3 kg. 13.901 (11) Drum with ratchet device and wire, weight 6 kg. 13.902 (12) Piston rod for ejecting the sample, weight 10 kg. 13.903 Two trestles made of stainless steel. 13.904 (4) Extra weights, 28 kg each 13.905 Description:   Main rack (pos. 3) AISI 316 stainless steel Kullenberg releaser (pos. 1) AISI 316 stainless steel Corer tube (pos. 9) Optional: ø104/ø99 mm AISI 316 stainless steel or ø110/ø99 mm, transparent PVC Piston (pos. 8) Brass Piston seal Leather Wires (pos. 2 and pos. 6) AISI 316 stainless steel Weights (pos. 4) Lead 4-12 Trestles for corer tube  Stainless steel
Manual for Piston Corer: Click here (PDF file 255 kb) or right-click, save destination.
Piston inside corer tube	Safety lock for Kullenberg releaser
Working with the corer tube on the two trestles. Tube detacher and ratchet device are mounted on the tube. Picture Gallery: Main rack of the Piston-Corer. (pos. 3) 13.905 Lead weight for the main rack. (pos. 4) 13.902  Drum with ratchet device and wire Kullenberg releaser arm (pos. 1 on annex A) with safety lock Detail: Safety lock for Kullenberg releaser arm. Corer tubes comes in different lengths: 2,2 or 4,2 meters. (pos. 9). 13.903 Piston rod. (pos 12).            Piston and swivel The piston 13.901 Tube detacher          On location: Photo: Kenneth Christensen     Partial reference list for KC piston corer Prof. Dr. Sergio R. Dillenburg Dr. Elirio E. Toldo Jr. Centro de Estudos de Geologia Costeira e Oceânica - CECO Instituto de Geociências - IG Universidade Federal de Rio Grande do Sul - UFRGS Brazil toldo@vortex.ufrgs.br Torben Vang Marine Geologisk Surveyor Damhaven 12 7100-Vejle Denmark tov@vejleamt.dk Dr. Francesco Grosso IDROMAR Via Volturno, 22R 16129 Genova Italia idromar@tin.it Mr. R. Massrour BESCO Co. Ltd P.O.Box 15115-573 Teheran - Iran Tel.: +021 87 10 720 Fax: +021 87 16 707 info@besco.vrservers.com

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Last rev. of this page: December 14, 2006