While NexSens provides turnkey systems, the XB-200 Data Buoy is easily customized with user-preferred power supplies, electronics, sensors, accessories and mounting hardware.
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Dimensional drawings and wiring diagrams are available online. |
Power Supply
The tower has three solar panels placed around the buoy. This design ensures that at least one panel gets sunlight as the buoy turns in the water. The panels are reverse polarity protected, and a solar regulator charges 12VDC sealed lead acid batteries. Options are available for both 28 and 56 AHr battery capacities.
WARNING: Sealed lead-acid batteries can be dangerous if they off-gas, producing hydrogen and oxygen, which are explosive. Under normal charging, the batteries emit very little gas, but a system malfunction could lead to overheating and off-gassing. An overheated or off-gassing battery should be replaced immediately. Always vent the battery well. Remove the lid manually (without power tools) and allow any trapped gases to escape. Never grind, cut, drill or use any flame on or near the battery well.
Wiring
The hull-mounted power hub includes inputs for three solar panels, a 12VDC output and a vent for equalizing battery well pressure. Refer to the online drawings for a wiring diagram.
Data Logging and Telemetry Equipment
There are two options for mounting data logging and telemetry equipment.
NexSens X3 data loggers mount under the solar tower top plate. Other waterproof equipment can be mounted similarly.
Alternatively, equipment can be mounted inside the sealed battery compartment.
The battery well lid is made of a marine-grade high-density polyethylene. It is easy to drill and cut. Fasteners, gland fittings, and connectors can be mounted and sealed to the lid.
Internal batteries can be tapped for power by connecting directly to the positive and ground terminals.
Topside Equipment
The solar tower top plate is also made of marine-grade high-density polyethylene, facilitating the mounting of sensors, navigation beacons, masts, and antennae.
Wave and Other Hull-Mounted Measurements
The power hub is predrilled to accommodate the Seaview Systems SVS-603HR wave sensor. Other sensors and equipment can be mounted to the power hub by adapting to the threaded hole pattern.
Subsurface Measurements
Water quality sensors, temperature strings, current profilers and other sensors can be mounted below the buoy or in the optional deployment pipe.
Ballast Weight
For most applications, 15lbs of ballast weight is recommended. Additional weight can be added by extending the threaded rod and stacking weights. Be sure to maintain adequate reserve buoyancy and freeboard.
For additional information, contact a NexSens systems specialist at [email protected]