NEXSENS CB-450 Data Buoy User Guide

CB-450 Data Buoy

The CB-450 Data Buoy is a buoyancy system that includes a buoy hull with data well that has a buoyancy of 450 lbs. It also includes a buoy tower, three 15W solar panels, a data well lid, three 4 pass-through sensor pipes, three top- side lifting eyes, three bottom-side mooring eyes, and an instrument cage.

Product Specifications

• Buoyancy: 450 lbs. (204.12 kg)
• Weight: 145 lbs. (65.77 kg)
• Data Well Dimensions: 10.3 (26.16 cm) inside diameter; 19.5 (49.53 cm) tal

Instrument Cage Installation

Follow these steps to install the instrument cage:

1. Use the provided bolt, lock washer, and castle nut to attach
   the cage to the buoy frame.

2. 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.

3. Place the cotter pin through the bolt hole and bend the long
   leg of the pin for security.

Solar Tower Installation

To install the solar tower, use a 9/16 socket or wrench and the six included hex head cap bolts and lockwashers.

Ballast Weight & Stability

To prevent overturning of the 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.

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.

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.

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.

For additional information, please reference the CB-450 Resource Library on the NexSens Knowledge Base.

Contact NexSens at 937-426-2703 or visit their website at www.nexsens.com for more information.

Overview

The CB-450 data buoy is constructed of an inner core of cross-linked polyethylene foam with a polyurea coating that provides 450 lb. buoyancy. A stainless steel internal frame provides topside lifting eyes and subsurface mooring eyes for single- and multi-point mooring. An integrated data well accommodates internal batteries, which are recharged by (3) 15-watt solar panels mounted on the buoy tower. The data well lid is available as a NexSens X2-CB buoy-mounted data logger or as a standard lid with included pass-through fittings.
What’s Included?

(1) Buoy hull with data well, 450 lb. buoyancy
(1) Buoy tower
(3) 15W solar panels
(1) Data well lid (X2-CB or pass-through)
(3) 4” pass-through sensor pipes
(3) Top-side lifting eyes
(3) Bottom-side mooring eyes
(1) Instrument cage

Important Specifications

• Buoyancy : 450 lbs. (204.12 kg)
• Weight : 145 lbs. (65.77 kg)
• Data Well Dimensions : 10.3” (26.16 cm) inside diameter; 19.5” (49.53 cm) tall

Instrument Cage Installation

1. Use the provided bolt, lock washer and castle nut to attach the cage to the buoy frame.
   Figure 2: Bolt installation and cage connection

2. 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.

3. 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 lockwashers 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.

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.
For more information on mooring configurations, follow the link provided:
nexsens.com/mooringdb

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.

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-450 buoyancy diagram. For additional information, please reference the CB-450 Resource Library on the NexSens Knowledge Base.
nexsens.com/cb450kb
937-426-2703
www.nexsens.com

2091 Exchange Court Fairborn, Ohio 45324

References

• Knowledge Base - NexSens
• CB-Series Data Buoy Ballast Weight & Stability - NexSens
• Mooring Data Buoys - NexSens

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