Primary Applications
ADVOcean-Hydra
Rugged build quality with high-end ADV® performance is what the ADVOcean-Hydra is all about. Representing the ultimate solution to measuring precise 3D velocity in the most challenging environments, the ADVOcean/Hydra can be integrated with an array of external sensors for a complete oceanographic data collection system. With the optional RPT pressure sensor, this powerful system is able to sample both pressure and velocity at up to 25 Hz, making it the definitive solution for studying nearshore processes.
ADVOcean/Hydra Brochure [PDF]
• Wave directional spectrum measurements
• Surf zone turbulence research
• Estuarine studies
• Benthic boundary layer studies
The Hydra (package option featuring the ADVOcean probe) is a fully integrated, 3-axis (3D), ocean sensor system that includes a powerful data acquisition system, a high-resolution velocity sensor, a strain gage pressure sensor, and top-of-the-line sensors from other manufacturers all in one seamless package.
| Hydra Standard Features | Hydra Optional Features | |
Expanded Description [PDF]
The Hydra provides a fully synchronized |
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| Velocity | |
| Programmable Velocity Range Scales | 5, 20, 50, 200, 500 cm/s |
| Resolution | 0.1 cm/s |
| Accuracy | ±1% of measured velocity, ±0.5 cm/s at up to 25 Hz |
| Temperature | |
| Resolution | 0.01°C |
| Accuracy | ±0.1°C |
| Power | |
| Input | 12-24 VDC |
| Typical Continuous Operating Consumption | 2.5 to 4.0 W |
| Battery capacity — Alkaline, 2 packs | 1200 W·h |
| Compass/Tilt Sensor | |
| Resolution — Heading, Pitch, Roll | 0.1° |
| Accuracy — Heading | ±2° |
| Accuracy — Pitch, Roll | ±1° |
| Physical & Environmental | |
| Operating Temperature | -5° to 45°C |
| Storage Temperature | -10° to 60°C |
| Depth Rating - Delrin probe | 400 m |
| Depth Rating - Stainless Steel probe | 400 m |
| Canister Dimensions - Diameter x Height | 16.5cm x 74.9cm |
| Hydra Optional Resonance Pressure Transducer (RPT) or Paroscientific | |
| Accuracy | 0.01% |
| Maximum Depth - RPT | 20 m |
Doppler technology has several inherent advantages that make it the preferred method for current measurement. Combining this with SonTek’s proven ability to develop instruments that are both powerful and easy-to-use, the ADVOcean is the ideal choice for a wide range of applications.
Want to learn more? Download the brochure, read real stories about how our customers use the system in the field, or participate in one of our online training sessions (“Webinars”) at your convenience!
Brochures
ADVOcean / Hydra Brochure
Customer Stories
ADVOcean Customer Stories
Training
Training Sessions and Podcasts
ViewHydra is a Windows-based data display and analysis program. It is a post-processing package designed specifically for use with the data collected by a SonTek/YSI Hydra system. ViewHydra allows you to quickly and easily look at Hydra data in a variety of ways: time-series graphs, tabular data, ASCII text files. Note: The "Pro" version of this software (ViewHydraPro) supports directional wave measurement studies and advanced data analysis. Requires the directional waves option.
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Customer Solutions
Reef Studies with the ADVOcean
Reef study showing the use of a MicroADV to measure the exhaling current off the osculum (aparture) of the sponge Theonella swinhoei (on the right), simultaneously with measurements of the ambient current using an ADVOcean (on the left). Photo courtesy of Amatzia Genin, Hebrew University of Jerusalem.
Open-Channel Flow Measurements at Water Treatment Facility
A major municipal water authority in China recently conducted a series of flow tests in a large treatment facility using a 5-MHz SonTek/YSI ADVOcean. They chose the ADVOcean because of its ability to measure precise 3-D currents at a focal point 18 cm from the transducer. The ADVOcean's heavy-duty construction made it ideal for this type of industrial application.
Fluid Mud Study in Canada's Petitcodiac River
As part of a project aimed at understanding the influence of high-concentration suspensions of fine sediments (fluid muds) on flow, researchers from Boston College and the Bedford Institute of Oceanography recently deployed a SonTek Autonomous ADV (Hydra) in the Petitcodiac River, New Brunswick, Canada.
A picture is worth a thousand words!
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Solutions Showcase
Simple. Sleek. Superior.
Useful options and accessories make the ADVOcean / Hydra a complete, turn-key solution.
Mounting Clamp
Optional plastic or stainless steel mounting clamp.