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Submersed profiler 'Salla'

Flydog Solutions LLC
Energia 6a
11316 Tallinn


  • Year of initial development
  • Year of latest version
  • Area of Application
    Oceanography, environmental monitoring
  • Field of Use
    Vertical profiling, hub for integrating various sensors
  • Languages Supported
  • Serial interface
  • Ethernet interface
  • Analogue interface
  • Other interfaces
  • Weight in air [kg]
  • Weight in water [kg]
  • Width [m]
  • Length [m]
  • Height [m]
  • Housing material
    Stainless steel AISI-316L
  • Power supply (internal/external with specs)
    Internal rechargeable battery pack: 60 Ah, 12 V, LiFePO4 External power supply over a seabed cable
  • Max. operating depth [m]
  • maximum recovery depth {m}
  • Operating temperature: min. [°C]
  • Operating temperature: max. [°C]
  • Telemetry
    Salla is connected to the mainland via a seabed cable. Communication over copper wires (up to 3 km cable length) or optical wires (longer distances).
  • Data Logger
    Flydog's datalogger takes care of logging the readings from the sensors, communicating with server, controlling the profiler's winch, charging the batteries and managing of power.
  • Sensors
    For profiling various sensors and probes from different manufacturers can be integrated (YSI, SeaBird, Idronaut etc). The profiler works as a central hub and can also power external sensors such as ADCPs and forward their data to the mainland.
  • Power unit
    Internal rechargeable battery pack: 60 Ah, 12 V, LiFePO4 External power supply over a seabed cable
  • More information
    Deploying the profiler: The profiler can be deployed with a ship that is equipped with a crane with lifting capacity of 1 ton. The profiler has positive buoyancy. It is fixed to the bottom of the sea with a concrete anchor and will stay floating a meter above the anchor. Retrieving the profiler: The profiler can be surfaced by releasing an accoustic releaser that keeps the profiler attached to the anchor. The profiler will then slowly raise to the surface and can be lifted to the ship. Power and data: The measured data is sent to Flydog’s computing backend system over a seabed cable. The seabed cable also provides the system with power. Servicing: Sensors can be surfaced for maintenance and cleaning. This can be carried out by a small boat without lifting the profiler out from the sea.

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