NEXSENS CB-75 Data Buoy User Guide

: June 15, 2024
: NEXSENS

Table of Contents

NEXSENS CB-75 Data Buoy
Product Information
Overview
What’s Included
Important Specifications
Ballast Weight & Stability
Mooring Configurations
Safe Deployment
Saltwater Deployment
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

NEXSENS CB-75 Data Buoy

Product Information

Specifications

Constructed of an inner core of cross-linked polyethylene foam
Polyurea coating provides 75 lb. of buoyancy
Stainless steel plates on the top and bottom
Topside lifting handles and subsurface mooring eyes
The Center hole accommodates the X3-SUB Submersible Data Logger
(3) 4-watt solar panels for recharging internal battery

Ballast Weight & Stability
The NexSens instrument cage (~15 lbs.) provides adequate ballast for a stand- alone system. No mooring apparatus should be connected to the bottom of the cage. The outside eye nuts should be utilized for tethering to another flotation device.

For more information regarding top-side and ballast weight, follow the link provided: nexsens.com/dbbwstab

Mooring Configurations
To develop an effective mooring strategy, a variety of application-specific criteria (water level fluctuations, currents, 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 chains 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 more information regarding safe deployment practices and tips, follow the link provided: nexsens.com/deptip

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.
For more information regarding the use of zinc anodes, follow the link provided: nexsens.com/usecb.

FAQ

Q: Can the buoy be submerged?
A: No, the buoy data well is not rated for submersion.
Q: How much buoyancy does the CB-75 buoy provide?
A: The CB-75 buoy provides 75 lb. of buoyancy.
Q: What is the center hole used for?
A: The center hole accommodates the X3-SUB Submersible Data Logger.
Q: Can I connect a mooring apparatus to the bottom of the instrument cage?
A: No, the mooring apparatus should be connected to the outside eye nuts for tethering to another flotation device.
Q: Do I need sacrificial zinc anodes for saltwater deployment?
A: Yes, sacrificial zinc anodes should be used to prevent corrosion in saltwater environments.

For additional information, please reference the CB-75 Resource Library on the NexSens Knowledge Base: nexsens.com/cb75kb

937-426-2703 | www.nexsens.com.

Overview

The CB-75 data buoy is constructed of an inner core of cross-linked polyethylene foam with a polyurea coating that provides 75 lb. of buoyancy. Stainless steel plates on the top and bottom of the buoy provide topside lifting handles and subsurface mooring eyes for drifting, tethering, or mooring applications. The center hole accommodates the X3-SUB Submersible Data Logger, which includes an internal battery that is recharged by (3) 4-watt solar panels mounted on the top plate.

Figure 1: NexSens CB-75 Data Buoy

$NEXSENS-CB-75-Data-Buoy-fig- $1$$

What’s Included

(1) Buoy hull, 75 lb. buoyancy
(1) Buoy tower
(3) 4-W solar panels
(3) 1.5” pass-through sensor pipes
(3) Top-side lifting handles
(3) Bottom-side mooring eyes
(1) CB-CCA Anti-rotation collar
(1) Instrument cage

Important Specifications

Net Buoyancy: 75 lbs. (34.00 kg)
Weight: 28 lbs. (12.70 kg)
Center Hole Dimensions: 5.5” (13.97 cm) inside diameter; 13” (33.02 cm) tall

Ballast Weight & Stability

The NexSens instrument cage (~15 lbs.) provides adequate ballast for a stand- alone system. No mooring apparatus should be connected to the bottom of the cage. The outside eye nuts should be utilized for tethering to another flotation device.

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.).

$NEXSENS-CB-75-Data-Buoy-fig- $2$$

Figure 2: CB-75 buoyancy diagram.

Mooring Configurations

To develop an effective mooring strategy, a variety of application-specific criteria (water level fluctuations, currents, 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 chains 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 more information regarding safe deployment practices and tips, follow the link provided: nexsens.com/deptip.

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.