Wave Radars

AWAC - 400 kHz - Acoustic Wave and current profiler up to 100 meter depth

Real-time current profiles and directional waves for shallow water

The AWAC 400 kHz ADCP has become the standard reference technology in submerged wave-measurement applications. Thousands of these ADCPs have been deployed to capture the full wave spectrum, in combination with current profiles. With a 100 m maximum range for wave measurements and 1.5 Hz sampling of the surface elevation, the AWAC 400 kHz is the optimal tool for deeper-water current and wave measurements.

Nortek

Rud, NO

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Description

Highlights

Real-time current profiles and waves to 100 m range
Acoustic surface tracking (AST) with vertical beam
Can be used both with fixed frames and subsurface buoys

Applications

Online measurements of currents and waves
Design data for planning of new coastal structures
Site studies for offshore wind platforms
Coastal erosion studies
Measurement campaigns where the full wave spectrum is needed
Monitoring of transient waves for channel wall protection
Studies of tidal currents

For more information, download the technical specification (PDF).

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Specifications

Physical Properties: Weight in air [kg]

6.1

Width [cm]

21

Length [cm]

17.5

Operating temperature: min. [°C]

-4

Operating temperature: max. [°C]

40

Housing material

POM and polyurethane plastics with titanium fasteners

Weight in water [kg]

2.9

General: Area of Application

Real-time current profiles and directional waves with up to 100 m range

Field of Use

Online measurements of currents and waves, Design data for planning of new coastal structures, site studies for offshore wind platforms

Output parameters

Real-time directional waves to 35m range

Direction wave or non-directional

Directional

Year of initial development

2001

Year of latest version

2016

Languages Supported

English

Type of wave recorder

Radar

Operating properties: Output data format

NMEA, binary. Prolog provides same types also for processed wave and current data

Sampling rate

Sampling rate velocity (output): 2Hz. sampling rate AST (output): 4 Hz. no. of samples per burst: 512, 1024 or 2048

Power supply and communication: Power supply (internal/external with specs)

DC: input 9- 18V. DC maximum peak current: 3 A. Avg. power consumption: 0,65W. sleep current: < 100 μA

Output interface {eg. rs232}

RS-232 or RS-422. software supports most commercially available USB– RS-232 converters

Hardware/software requirements: Dedicated software

Y

Data provided / logged

Pressure, one velocity along each beam, AST

Compass sensor: Range

0 - 360°

Resolution

0.1° for tilt <15°

Current sensor: Range

±10 m/s horizontal, ±5 m/s along beam

Accuracy

±1% of measured value ±0.5 cm/s

Resolution

0.001 m/s

Temperature sensor: Range

-4 to +40 °C

Accuracy

0.1 °C

Resolution

0.01°C

Pressure sensor: Range

0 to 10, 20, 30, 50, 100, 200 or 300 meter depth

Accuracy

0.5% of full scale (optional 0.1% of full scale)

Resolution

0.005% of full scale