NEXSENS CB-250 Data Buoy User Guide
- June 10, 2024
- NEXSENS
Table of Contents
CB-250 Data Buoy
Instrument Cage Installation
Use the provided bolt, lock washer, and castle nut to attach the cage to the
buoy frame.
Figure 2: Bolt installation and cage connection.
Tighten firmly with a pair of 1-1/8 wrenches.
- Ensure to flatten the lock washer and align the bolt hole with a notch on the castle nut.
Figure 3: Secured cage.
Place the cotter pin through the bolt hole and bend the long leg of the pin.
Figure 4: Cotter pin installation. Bent pin for security
Solar Tower Installation
Use a 9/16 socket or wrench and the (6) included hex head cap bolts and lock washers to install the solar tower.
- It is recommended to apply anti-seize compound to the bottom threads of each bolt before installation.
- Ensure the 6-pin solar tower cable is free and not pinched beneath the tower upon installation.
Figure 5: Solar tower installation.
Ballast Weight & Stability
To prevent overturning of a CB-450 buoy system and to ensure that it is stable
in the water, additional ballast weight may be needed. The buoy’s center of
gravity is near the water surface without instruments connected. Any weight
added above the water surface must be appropriately counterbalanced by adding
ballast weight below the surface.
For more information regarding top-side and ballast weight, follow the link
provided.
nexsens.com/dbbwstab The buoy data well is not
rated for submersion, so proper ballast weight is critical to ensure that the
buoy does not overturn, including when the buoy is subjected to additional
loading (e.g. high wind/waves, periodic snow/ ice loads, etc.). Figure 6:
CB-250 buoyancy diagram.
Mooring Configurations
To develop an effective mooring strategy, a variety of application-specific criteria (water level fluctuations, currents and wave action, debris loads, etc.) must be thoroughly reviewed prior to deployment. NexSens does not endorse any particular mooring strategy for any specific application. a. For more information on mooring configurations, refer to the CB-250 Resource Library on the NexSens Knowledge Base.
Safe Deployment
Warning: Always follow safe marine and boating practices. Heavy anchors, ballast weights, and chain require careful maneuvering. Small boats with limited lifting equipment and boat clutter can be unsafe. Care must be taken during deployment to maintain a clean and safe environment.
Saltwater Deployment
Sacrificial zinc anodes should be used whenever a buoy is deployed in a saltwater environment to prevent corrosion. These zinc anodes must be inspected and replaced as needed.
What’s Included?
- (1) Buoy hull with data well, 250 lb. buoyancy
- (1) Buoy tower
- (3) 15-W solar panels
- (1) Data well lid (X2-CB or pass-through)
- (3) 2 pass-through sensor pipes
- (3) Top-side lifting eyes
- (3) Bottom-side mooring eyes
- (1) Instrument cage
Important Specifications
- Buoyancy: 250 lbs. (114 kg)
- Weight: 115 lbs. (52 kg)
- Data Well Dimensions: 10.3 (26.2 cm) inside diameter; 19.5 (49.5 cm) tall
For additional information, please reference the CB-250 Resource Library on
the NexSens Knowledge Base.
nexsens.com/cb250kb
2091 Exchange Court Fairborn, Ohio 45324
References
- Knowledge Base - NexSens
- CB-Series Data Buoy Ballast Weight & Stability - NexSens
- Mooring Data Buoys - NexSens
- NexSens Technology Inc. - Better Data. It's what we do
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