ADCPs - Acoustic Doppler Current Profilers

WorkHorse Sentinel

Self-Contained 1200, 600, 300 kHz ADCP

Daytona Beach, US

Description

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 154 m, the high-frequency Sentinel ADCP is ideally suited for a wide variety of applications. Thanks to Teledyne RDI’s Broadband signal processing, 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.

Product Features:

• Versatility: Direct reading or self contained, moored or moving, the Sentinel provides precision current profiling data when and where you need it most.

• A solid upgrade path: The Sentinel has been designed to grow with your needs. Easy upgrades include pressure, bottom tracking, and directional wave measurement.

• Precision data: Teledyne RDI’s BroadBand signal processing delivers very low-noise data, resulting in unparalleled data resolution and minimal power consumption.

• A four-beam solution: Teledyne RDI’s 4-beam design improves data reliability by providing a redundant data source in the case of a blocked or damaged beam; improves data quality by delivering an independent measure known as error velocity; and improves data accuracy by reducing variance in your data.

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Specifications

General: Year of last update

1995

Length [m]

0.41

Width [m]

0.23

Height [m]

0.23

Weight in air [kg]

13

Weight in water [kg]

4.5

Min. operating power [V]

20

Max. operating power [V]

50

Max. operating depth [m]

6000

Max. battery lifetime [days]

260

True Bottom Tracking Capability

Y

Other specifications: Real-time interfacing

RS232; RS422; Inductive Modem; Acoustic Modem

Min. external power [Voltage]

20

Max. external power [Voltage]

50

Max. cable length [m]

6000

Baudrate [kbit/s]

1.2

External battery container

Y

Data acquisition software and processing software

WINSC; VMDAS; VISEA; NAVIPAC; UHDAS; HYPACK; QUINSY; SEDIVIEW; WINADCP

Auxiliary Sensors: Conductivity

Y

Oxygen

N

Turbidity

N

Tides

N

Waves

N

Pressure

Y

Acoustic modem

N

Relocation of transponder

N

Wave direction

N

Speed of sound

Y

Deployment method: Moving vessel

Y

Bottom mount

Y

Inline string mooring

Y

Data Buoy

Y

Marine structures

Y

Doppler Current Profiler: Center working frequency [kHz]

614

Max. typical profiling range [m]

70

Number of beams

4

Nadir angle [deg]

20

Max. Number of cells per beam

256

Min. blanking distance [m]

0.5

Lost data at far boundary [%]

6

Max. ping rate [Hz]

3

Min. vertical resolution [m]

0.25

Min. cell size [m]

0.25

Max. cell size [m]

4

Cell overlap [%]

25

Max. velocity [m/s]

10

Speed dependent uncertainty: horizontal [%]

0

Speed independent uncertainty: horizontal [cm/s]

0.25

Speed independent uncertainty: vertical [cm/s]

0.09

Surface reference capability

Y

Surface current measurement

Y

Compensation for sound speed

Y

Single ping rejection of outliers

Y

Uncertainty of single ping horizontal velocity for default cell size [cm/sec]

3.6

Uncertainty of single ping vertical velocity for default cell size [cm/sec]

1.31

Standard Sensors: Temperature: min [°C]

-5

Temperature: max. [°C]

45

Tilt: max. [deg]

45

Compass type

Magnetic

Application: Typical applications

Physical & Biological Oceanography; Coastal Engineering; Hydrology; Fisheries; Ports; Pipe & Cable Laying; Offshore Oil; Marine Renewables; Observatories; Seismic Operations; Plume Tracking; Transport & Discharge; Model Calibration