FT512 Jumbo Piston Corer

The FT512 Jumbo Piston Corer combines operational safety with survey efficiency. Using proven designs and trusted technologies, the system has the advantage of using both manual and hydrostatic safety release systems.

This Jumbo Piston Corer delivers a longer, and less-disturbed sample than a typical gravity corer, thanks to the piston creating a vacuum, preventing blockages in the sample route.

An extremely flexible piece of equipment, this system is fitted with removable weights which can be configured from 2 to 10 tonnes. This means that optimal penetration can always be realised, and arranged to match any ground type and your specific survey needs.

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Product Highlights

  • Modular cores in 3m lengths from 3m – 30m long
  • Type B barrel as standard – OD 127mm, sample – 106mm
  • Up to 7” core diameter on special request
  • Hydrostatic safety release system
  • Manual or automatic release trigger
  • Full ocean depth rating
  • Configurable weights from 600-2600kg
  • Consumables in stock
  • Various LARS options available
  • Compatible with FT580 Heat Flow System
  • Integration with Feritech HUB software

How does the Jumbo Piston Corer work?

A jumbo piston corer has a wider diameter barrel and can be as much as 30m long where as a standard piston corer is typically up to 9m long. The trigger mechanism is based around the Kullenberg design.

On the way down through the water column the Feritech hydrostatic safety release arms at the set depth, this allows the piston corer to release when it reaches the sea floor.

The piston corer is released when a weight (or small gravity corer)  on the end of a messenger wire touches the seabed and allows the tripping arm to open.

Once released the main piston corer free falls into the sea floor under its own mass (anywhere between 500kg to 4000kg).

As the piston corer penetrate the seafloor, the piston inside stops at the sea floor. As the corer penetrates the action of the piston creates a pressure differential at the top of the sediment column that encourages marine soil to enter the core liner in an undisturbed state.

At the same time the Feritech trigger arm and mechanism slackens its hold on the lifting wire and drops down to be on top of the corer once again ready for simple recovery.

After a few seconds the coring process is complete and the system is recovered back on to the vessel so that the core can be processed.