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Wiertsema & Partners SoniDens

  • Wiertsema & Partners SoniDens
Wiertsema & Partners
Feithspark 6
9356BZ Tolbert
Netherlands

Specifications

  • Width [mm]
    260
  • Length [mm]
    440
  • Height [mm]
    80
  • Weight in air [kg]
    19
  • Housing material
    Stainless steel
  • Min. external power [Voltage]
    110
  • Max. external power [Voltage]
    220
  • Max. power consumption [W]
    35
  • Battery
    N
  • Max. operating depth [m]
    25
  • Max. operating temperature [°C]
    40
  • Operating temperature: min. [°C]
    0
  • Minimum range [gr / l]
    1000
  • Maximum range [gr / l]
    1800
  • Resolution [gr / l]
    1
  • Accuracy [%]
    1
  • Temperature sensor
    Y
  • Temperature resolution [°C]
    0.1
  • Temperature measurement accuracy [%]
    1
  • Depth sensor
    Y
  • Depth resolution [m]
    0.01
  • Depth measurement accuracy [%]
    0.5
  • GPS sensor
    N
  • Internal memory
    N
  • Main applications
    Insitu density of fluid mud layers for determination of the nautical depth.
  • Distinguishable features
    The SoniDens is very light-weight, whichmakes it easy to handle. Deployment ofthe SoniDens can be done from a vesselwith a small deck crane and small winch.
  • Sampling Method
    Siltation occurs in many ports and navigation channels around the world. Without dredging and other mitigating measures this results in draft restrictions for vessels entering the ports. The necessity to remove sediments can be reduced by changing the current nautical depth defined by 210 kHz survey towards a nautical depth based on a defined density. Within the fluid mud layer the physical properties such as density and apparent viscosity increase with depth. At a certain depth a transition between the liquid and the solid state can be observed. This transition, associated with specific critical density, could be considered as the nautical depth according to the PIANC definition. For obtaining the actual nautical depth, mud density is the easiest and most accurate parameter to measure.
  • Accessories
    The standard data cable length is 25 metre, but can be extended to increase the measuring depth. Tidal, echosounder and GPS data (if available) from the vessel will be simultanously read, included and presented for absolute depth values. The software runs on Windows 7.

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