NexSens CB-40 Data Buoy

The CB-40 offers a compact and affordable platform for deploying water quality sondes and other instruments that integrate power and data logging

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With an overall 14-inch (35.5cm) diameter by 48-inch height (122cm), the CB-40 can be deployed quickly and easily from a small boat. Fully configured systems typically weigh around 45 lbs (20.4Kg).


Topside Plate:


A stainless steel topside plate supports solar marine lights and offers a convenient lifting point via (3) eyenuts.


Centre Hole:


The center hole offers instrument access and includes space for additional instrumentation, battery packs, or other waterproof electronics.


Multi-Vendor Compatibility:


Compatible instruments include YSI 6-Series & EXO sondes, Hydrolab Series 5 & HL sondes, Eureka Sub 2 & Manta 2 sondes, and In-Situ TROLL 9500 instruments.


Instrument Pipe:


A 4-inch stainless steel instrument pipe securely houses the sonde or water quality instrument and includes slotted holes for water flow.


Solar Beacon:


The optional solar marine light has a one to three nautical mile range and securely mounts to the buoy top plate for maximum visibility.


Built to Last:


Constructed of cross-linked polyethylene foam with a heavy polymer skin and an indestructible stainless steel frame, the CB-40 is designed for years of service.


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    Additional information

    Hull Dimensions

    14" (35.56 cm) outside diameter; 20" (50.80 cm) tall

    Instrument Pipe Dimensions

    3.87" (9.83 cm) inside diameter; 48" (121.92 cm) tall


    38 lbs. (17.24 kg) no payload; 45 lbs. (20.41 kg) with sonde and solar marine light


    40 lbs. (18.14 kg)

    Hull Material

    Cross-linked polyethylene foam with polyurea coating and stainless steel deck

    Hardware Material

    304 stainless steel

    Mooring Attachments

    1, 2 or 3 point mooring