For ocean scientists seeking long-term, high-quality current measurements in the deep ocean, the Teledyne RDI Workhorse Sentinel 300 kHz ADCP with a 6000 m depth rating remains one of the most trusted and widely deployed Acoustic Doppler Current Profilers available. Designed as a self-contained instrument, the Sentinel combines proven Doppler technology, low power consumption, and exceptional data quality, making it particularly well suited for long-duration mooring deployments in some of the world’s most challenging marine environments.

 

Designed for Deep-Water Moorings

The Workhorse Sentinel 300 kHz is commonly integrated into subsurface mooring systems, such as Deepwater Buoyancy elliptical and spherical buoys, to measure current velocity profiles throughout the water column. Its 6000 m depth rating and integrated 6000m pressure sensor allow deployment in deep-ocean basins, continental slope environments, and long-term climate monitoring programs. The self-contained design incorporates onboard memory, heading, tilt and temperature sensors, and a 450Wh battery pack, enabling autonomous operation without the need for external power or communications infrastructure.

 

When mounted upward-looking on a mooring frame or buoyancy package, the 300kHz Sentinel can provide current profiles extending more than 100m into the water column, delivering critical data for studies involving ocean circulation, water mass transport, climate variability, and biological productivity.

 

High-Quality Data Through Proven Broadband Processing

One of the key advantages of the Teledyne RDI platform is its’ patented BroadBand signal processing technology. BroadBand processing delivers low-noise velocity measurements while minimising power consumption, allowing researchers to achieve high-quality current profiles over extended deployment periods. This combination of data quality and energy efficiency is particularly valuable for moored observatories where instruments may remain underwater for many months between servicing intervals.

 

The system’s patented four-beam architecture provides an additional level of confidence in collected data. Unlike some alternative configurations, the four-beam design generates an independent measurement known as error velocity, helping operators assess data quality while providing redundancy should one beam become partially obstructed during deployment. This results in improved reliability and reduced uncertainty in long-term oceanographic datasets.

 

Advantages for Ocean Science Programs

For oceanographic institutions and research agencies, the Workhorse Sentinel has developed a reputation as an industry benchmark due to its extensive deployment history and global user base. Thousands of units have been deployed worldwide across oceanographic, environmental monitoring, fisheries, and climate research applications.

 

Several features make the 300 kHz Sentinel particularly attractive for scientific moorings:

• 6000 m depth capability for deep-ocean deployments.
• Self-contained architecture with integrated batteries and onboard memory.
• Low power consumption, enabling long deployment durations.
• High-resolution current profiling with configurable cell sizes and sampling strategies.
• Integrated heading, tilt and temperature sensors to support accurate current measurements.
• Ice Tracking, high-resolution and high-speed sampling modes included as standard.

 

Why Choose Teledyne RDI?

While a range of ADCP solutions exist on the market, Teledyne RDI’s long history in Doppler current profiling continues to set the benchmark for many ocean science programs. The Workhorse Sentinel’s combination of proven BroadBand processing, four-beam data validation, exceptionally low power requirements, and extensive global deployment record provides researchers with confidence that valuable mooring data will be captured accurately and reliably.

 

For long-term ocean observatories, climate studies, and deep-ocean circulation monitoring, the Teledyne RDI Workhorse Sentinel 300 kHz ADCP remains a trusted tool for delivering the precise current measurements required to better understand our changing oceans.

 

A Complete Mooring Solution Through BlueZone Group

As the Australian and New Zealand representative for both Teledyne Marine and DeepWater Buoyancy, BlueZone Group is uniquely positioned to supply complete oceanographic mooring solutions through a single point of contact. Whether the requirement is a deep-water current profiling system, a custom mooring package, or a fully integrated deployment solution, BlueZone can provide the Workhorse Sentinel ADCP alongside DeepWater Buoyancy’s proven range of spherical and elliptical buoyancy modules, syntactic foam, and subsea mooring components.

 

For more information on the Teledyne RDI’s Workhorse Sentinel 300kHz ADCP, please Contact the BlueZone Group sales team.

 

Read More:

Introducing the Workhorse Proteus: Teledyne RDI’s Advanced ADCP Solution

BTM-AL50: Purpose Built Bottom Mounts for Shallow Water ADCP Deployment

 

Workhorse Sentinel ADCP integrated into Deepwater Buoyancy Elliptical Buoy (Photo credit: Deepwater Buoyancy).