NexSens CB-650 Data Buoy

  • Self-powered data logging buoy
  • Integrated 32-watt solar panels for 96-watts of solar charging
  • Supports a variety of environmental sensors
  • Topside plate supports solar marine light, weather stations, and other sensors
Product Options


The NexSens CB-650 Data Buoy is designed for deployment in lakes, rivers, coastal waters, harbours, estuaries and other freshwater or marine environments. The floating platform supports both topside and subsurface environmental monitoring sensors including weather stations, wave sensors, thermistor strings, multi-parameter sondes, Doppler current profilers and other monitoring instruments.

The buoy is constructed of an inner core of cross-linked polyethylene foam with a tough polyurea skin. A topside 35” tall stainless steel tower includes three 32-watt 12VDC semi-flexible solar panels, and a center 10” ID x 21.5” tall data well accommodates batteries, data loggers, sensors, and more. Three 4” pass-through holes with female NPT bottom threads allow for quick connection of instrument deployment pipes and custom sensor mounts. The stainless steel frame supports both single point and multipoint moorings.

Wireless telemetry options include cellular and Iridium satellite. Compatible digital sensor interfaces include RS-232, RS-485 and SDI-12. Each sensor port offers a wet-mateable connector for a reliable waterproof connection. For custom integrations, an optional pass through data well lid includes a set of plugs and cable gland fittings.

Manufactured by: NexSens
Model: NexSens CB-650 Data Buoy

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Hull Outer Diameter: 38.0” (96.5cm)
Hull Height: 22.0” (55.9cm)
Data Well Inner Diameter: 10.3” (26.2cm)
Data Well Height 21.5" (54.6cm)
Pass-Through Hole Diameter:  4.0" (10.2cm)
Tower Height 35.0” (88.9cm)
Solar Panels: 3x 32-watts
Weight 215 lb (98kg)
Net Buoyancy: 650 lb (295kg)
Hull Material Cross-linked polyethylene foam with polyurea coating & stainless steel deck
Hardware Material: 316 stainless steel
Mooring Attachments: 3x 3/4” eyenuts