VibeCore-DD4 takes a 4” diameter core sample

Operating water depth – The VibeCore DD4 is effective from virtually no water depth to approximately 70 metres depth.

Core sample length – up to 9 metres ( 1 m length supplied with rental ) - couplers and extension lengths available upon request

Core compression – Another factor in core sampling is “core compression” This “core compression” term is a bit of a misnomer. Water is virtually incompressible and usually even less compressible when dealing with water saturated sediments. The core material does not compress. A more accurate description is that the material fails to enter the core tube.

SDI VibeCore DD4 uses a lightweight, high energy vibrating motor. All Vibracore units are sealed and potted inside a rigid aluminum light frame. SDI added the necessary weight by casting a ring weight that sits on rubber bumpers. The bumpers are about 99% efficient springs. The result is that the DD4 gets the necessary downloading without losing energy accelerating the weight up and down. Most of the energy used to compress the bumpers is returned.

We calculate that other vibracore machines get about 12% of their energy into the core tube. However, the Vibecore-DD4 achieves closer to 60% of the energy into the core tube. The increased efficiency allows us to run our VibeCore from a pair of 12 V car batteries. Since the VibeCore-DD4 is on for less than a minute for each core, even a small set of car batteries can supply all the energy needed to take core samples for several days without recharging.

Unique near zero “core compression” for accurate true depth of sample recovery
Out-performs non-vibratory coring devices, such as box cores, gravity cores and pistons cores, equal or better the performance of heavier vibracores.
Operates from two simple, safe low-voltage car batteries and carries enough charge for a full day of operation, no generator or compressor needed.
Lightweight body (only 75 lbs.) and portability of VibeCore D makes it suitable for one-man operation on small vessels.

Additional information

Input Voltage - 22-28 VDC

Normal Active Time per core sample - 30 sec. to 1 minute typical

Active time per 80 AH Battery - 120 minutes

Estimated Cores per battery Charge - >75

Operating Frequency Working Water Depth - 70m ( 230 ft) (cable length - 79m)

Core Head Dimensions (in.) 10.25" Long x 14" Wide x 23" High

Core Tube Material - Aluminum

Core Tube Diameter OD-100mm (4”)

Core tube wall thickness - 0.050”

Air Weight (core head) 77 lbs.

Visit Specialty Devices Incorporated (SDI) for further information - SDI