Currents and Waves

Doppler Volume Sampler (DVS)

Newly released Doppler Volume Sampler™ (DVS) is now available for 6000M operation. DVS is ideally suited for your long-term shallow -- and now deep-water -- moored current measurement applications. The DVS can provide substantially improved data quality over traditional single point solutions, allowing for up to 5 bins of high resolution velocity data over a range of up to 5 meter. It measures velocity profiles at up to 40 times per second, allowing mm/s precision at a 1 Hz update rate. The DVS can be programmed to run a preconfigured sampling strategy, which need not be interrupted should the operator decide to communicate with the DVS to download data or command additional samples. Optional next-generation internal inductive modem and high-precision (0.005°C) thermistor, both from Sea-Bird Electronics, Inc. To explore more, click here.


ocean observer

Ocean Observer ADCP

TRDI dominates the offshore oil and gas sector with field-proven instruments designed to facilitate exploration drilling, field development and production. TRDI acoustic Doppler systems and software have been chosen by the majority of offshore operators worldwide to support their exploration drilling programs. This support is provided for station-holding, riser deployment and monitoring ROV operations and marine operations - and the data is all gathered and displayed in real time to enable crucial operational decisions to be made. The user selects between TRDI's high resolution or long range settings for the greatest flexibility in operation. To explore more, click here.

Ocean Surveyor ADCP 

It adds a new chapter to TRDI's unique contribution to the worldwide open-ocean research fleet. More than 250 vessel-mounted ADCP’s have been installed around the world. These ADCP's provide detailed maps of the distribution of water currents and suspended materials through the water column and along the ship's path. In real time, the ADCP is also used to aid in-situ decision making, to adapt field operations and to understand current regime characteristics. To explore further, click here.

 ocean surveyor





Sentinel V-ADCP

The Sentinel V, the first in our series of V products, is loaded with new features and capabilities destined to redefine and revolutionize your current profiling activities.

Sentinel V Features:

  • The new Sentinel V is the first product configuration to be released from our next generation line of V ADCP products. This self-contained instrument is available in three profiling ranges: 20m, 50m and 100m.
  • Multiple simultaneous sampling strategies
  • High-speed wireless data download
  • Record every measurement
  • 5 beams for data redundancy and enhanced measurements
  • Off-the-shelf battery option
  • Increased portability
  • Multiple bandwidths
  • Single digit start up
  • Uninterrupted Data Collection
  • Replaceable transducer pucks
  • Flood resistant electronics chamber

300 kHz Workhorse H-ADCP

The 300 kHz long-range Horizontal Acoustic Doppler Current Profiler (H-ADCP) is a narrow beam acoustic monitoring system that “looks” out horizontally from an offshore or coastal to measure near-surface water currents and multi-directional waves.

This revolutionary tool uses patented BroadBand signal processing to obtain an optimal combination of range, resolution and data quality, which simply cannot be replicated using NarrowBand products.

The H-ADCP measures currents at up to 128 individual points at up to 200 meters horizontal range, offering a clear illustration of the complete flow structure.


  • Increased Range
  • Increased Data
  • Real-Time Data
  • Robust Construction
  • Ease of Operation
  • Wave monitoring capability







Workhorse Long Ranger ADCP

For long-range, long-term deployments, the  Long Ranger is the best choice for collecting detailed data on seasonal and annual current structure fluctuations for scientific research and offshore oil and gas applications.

The highly reliable Long Ranger delivers the precision accuracy you require, combined with the dependability of RDI's proven Workhorse products.

Hundreds of Long Ranger units are currently deployed on:
• environmental monitoring buoys
• offshore oil rigs
• polar research moorings


Workhorse Mariner ADCP

Teledyne RD Instruments’ Workhorse Mariner Acoustic Doppler Current Profiler (ADCP) has become the instrument of choice for researchers and commercial surveyors working in coastal waters.

The Mariner offers all of the benefits of RDI’s traditional ADCP products in a compact package designed specifically for coastal hull-mount applications. The unit is easily integrated into the vessel’s DGPS input to provide integrated ADCP readings with precise position information.


  • Convenience
  • A turn-key solution
  • Precision data
  • A four-beam solution






Workhorse Monitor ADCP

The Monitor is Teledyne RD Instruments’ most popular direct-reading Acoustic Doppler Current Profiler. The unit is typically bottom frame-mounted and hard-wired to shore to provide real-time monitoring of coastal currents.

The Monitor’s high data accuracy and reliability make it a favorite for deployments in high-volume traffic areas such as ports and harbors, where the data is often integrated into a Vessel Traffic Monitoring System.


  • Extreme accuracy and reliability:
  • Versatility
  • Precision data
  • A four-beam solution

NEMO Waves Processing Array

Now there’s no reason to wait for your critical Teledyne RD Instruments Waves data. Used in conjunction with an Teledyne RDI Waves Array, the new NEMO Waves Processing Module actually processes your ADCP/ Waves data at the source, removing the typical constraints for transmitting this data to the surface. NEMO provides you with real-time data for real-time decision making.

Heard about Teledyne RDI's new NEMO interfaces?

Teledyne RDI's Workhorse ADCP and/or NEMO Waves Module can now be interfaced to a Teledyne Benthos Acoustic Modem. A new board set integrated within the instrument allows you to upgrade your Workhorse ADCP or NEMO Waves Module to provide real-time wireless acoustic data transmission to the surface.

Teledyne RDI's NEMO Waves Module can now be mounted directly inside the Workhorse ADCP pressure housing This new hardware integration allows for real time wave and current measurements with only one pressure canister for increased reliability. The NEMO now also includes the RS422 communications protocol for integration of processed wave and current data into your ocean observatory via long cable runs.




  • Processed real-time ADCP/Waves data when and where you need it
  • Low power —extended deployment
  • Easy to configure —easy to operate
  • Flexible design —turnkey solution



Workhorse QuarterMaster ADCP

Teledyne RDI's new 150 kHz QuarterMaster ADCP has been designed to fill a gap between our 300 kHz Workhorse ADCPs and our 75 kHz Workhorse Long Ranger. This unit offers an extended current profiling range over our higher frequency units, in our proven Long Ranger configuration. The Quartermaster is ideally suited for applications in which you're interested in measuring the top 300 meters of the water column. The highly versatile QuarterMaster can also be upgraded to include our bottom tracking option.
  • Workhorse versatility
  • Workhorse precision
  • Workhorse reliability.

Workhorse Sentinel

The self-contained Sentinel is Teledyne RD Instruments’ most popular and versatile Acoustic Doppler Current Profiler (ADCP) configuration, boasting thousands of units in operation in over 50 countries around the world.

By providing profiling ranges from 1 to 165m, the high-frequency Sentinel ADCP is ideally suited for a wide variety of applications. The Sentinel also offers unbeatable precision, with unmatched low power consumption, allowing you to collect more data over an extended period.

The lightweight and adaptable Sentinel is easily deployed on buoys, boats, or mounted on the seafloor. Real-time data can be transmitted to shore via a cable link or acoustic modem, or data can be stored internally for short or long-term deployments. The Sentinel is easily upgraded to include pressure, bottom tracking, and/or directional wave measurement—for the ultimate data collection solution.


  • Versatility
  • A solid upgrade path
  • Precision data
  • A four-beam solution






Workhorse Waves Array

Teledyne RDI’s Workhorse Waves Array is an innovative, cost-effective upgrade that allows you to take your Teledyne RDI ADCP to the next level. Via a simple upgrade, you can capture not only the industry’s most field-proven and dependable precision current profiling data, but highly accurate multi-directional wave measurements as well.

Teledyne RDI’s Workhorse ADCP has long been viewed as the industry’s most versatile ADCP. With a single instrument you can collect precision ADCP data from the seafloor, the surface, or even a moving vessel. And now, for the fraction of the cost of a stand-alone waves measurement tool, you can add highly robust multi-directional waves measurement capability to your instrument’s repertoire.

Why limit yourself to a single measurement, or settle for inferior measurements, when Teledyne RDI’s Waves Array allows you to have it all – at a price that meets your budget.


  • Versatility 
  • Affordable
  • High Quality Current Profiling Capability
  • Confidence in Results
  • Horizontal Waves Measurements
  • Real Time Waves Data at your Fingertips
  • No Surface Expression/Reduced Deployment Risk
  • Flexible Design Allows for a Wide Array of Deployment Conditions
  • Easy to Learn, Easy to Operate
  • Powerful and Comprehensive
  • RDI Support Every Step of the Way