OCEANOGRAPHY

11/06/2024

AWAC 600 kHz - 300 m, Generation 2Real-time current profiles and directional waves for intermediate water

The AWAC 600 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 60 m maximum range for wave measurements, 2 Hz sampling of the surface
elevation and onboard wave processing for real-time applications, the AWAC 600 kHz is the optimal tool for
medium water-depth current and wave measurements.
The AWAC 2 design offers future-proof electronics, better performance and easier instrument maintenance.

See the details of the Generation 2 AWAC updates in the release notes here.

Highlights

Applications

Real-time current profiles to 50 m range;

Online, real-time measurements of currents

real-time waves to 60m range

and waves

Acoustic surface tracking (AST) with vertical

Design data for planning of new coastal

beamstructures

Can be used both with fixed frames andSite studies for offshore wind platforms

subsurface buoys
Onboard wave processing for real-time
applicationsMonitoring of transient waves for channel
wall protection
Studies of tidal currents

Technical specifications
Water velocity measurements
Maximum profiling range

50 m

Cell size

0.5-8.0 m

Number of cells

200

Velocity range±10 m/s horizontal, ±20 m/s upon request

Accuracy±1% of measured value ±0.5 cm/s

Velocity precision

Consult instrument software

Maximum output rate

1 Hz or 2 Hz

Internal sampling rate

8 Hz

Echo intensity (along slanted beams)
Sampling

Same as velocity

Resolution

0.5 dB

Dynamic range

90 dB

Transducer acoustic frequency

600 kHz

Number of beams

3 beams 120° apart, one vertical beam, (90° apart, one at 5°for platform mount)Beam width

1.21° (2.42° total)

Beam width vertical beam

1.93° total

Wave measurement option (AST)
Maximum depth

60 m

Data types

Pressure, one velocity along each beam, AST

Max. Sampling Rate (output)

2Hz

No. of samples per burst

512, 1024 or 2048 (Contact Nortek for other burst
configurations)

Wave estimatesRange-15 to 15 m

Accuracy/resolution (Hs)

< 1% of measured value / 1 cm

Accuracy/resolution (Dir)

2° / 0.2°Period range

1-50 sCut-off period (Hs)

5 m depth: 0.5 sec, 20 m depth: 0.9 sec, 60 m depth: 1.5 sec

Cut-off period (dir)

5 m depth: 1.5 sec, 20 m depth: 3.1 sec, 60 m depth: 5.5 sec

Sensors
Temperature:

Thermistor in head (sampled at meas. rate)

Temp. range-4 to +40 °C

Temp. accuracy/resolution

0.1 °C/0.01 °C

Temp. time response

2 minCompass:

Solid State magnetometer (max 1 Hz sample rate)

Accuracy/resolution

2° for tilt < 30°/0.01°

Sensors
Tilt:

Solid State accelerometer (max 1 Hz sample rate)

Accuracy/resolution

0.2° for tilt < 30°/0.01°

Maximum tilt

Full 3DUp or Down

Automatic detect

Pressure:

Piezoresistive (sampled at meas. rate)

Range

0-100 m (inquire for options)

Accuracy / Precision

0.1% FS / Better than 0.002% of full scale

Data recording
Capacity

16 GB, 64 GB or 128 GB (inquire for larger capacity)

Data record

Consult instrument software

Mode

Stop when fullReal-time clock
Accuracy±1 min/year

Clock retention in absence of external

1 year. Rechargeable backup battery

power

Data communications
Ethernet

10/100 Mbits Auto MDI-X, TCP/IP, UDP/IP, HTTP protocols,
Fixed IP / DHCP client /Auto IP address assignment, UPnP andNortek proprietary instrument, discovery over Ethernet

SerialConfigurable RS-232/RS-422 300-1250000 bps

Recorder download baud rate

20 Mbit/s (Ethernet only) - 1 GB in 6 minutes

Controller interface

ASCII command interface over Telnet and serialConnectors
Standard

MCBH6F (Ethernet) + MCBH8F (serial and/or battery)

Optional

MCBH6F (Ethernet) + Souriau M-series metal connector foronline use (10M) + MCBH2F (battery)

SoftwareFunctions

Deployment planning, instrument configuration, data retrieval
and conversion (for Windows®)PowerDC input

12-48 V DC

Maximum peak current

1.5 A

Max. average consumption at 1 Hz

8 W at 1 Hz, Ethernet adds 0.75 W

Typical average consumption

15 mW

Sleep consumption

100 μA, power depending on supply voltage

Transmit power per beam

0.3-30 W, adjustable levels

Ping sequence

ParallelEnvironmental
Operating temperature-4 to +40 °C

Environmental
Storage temperature-20 to +60 °C

Vibration

IEC60068-2-64

EMC approval

IEC/EN 61000-6-2, 61000-6-3

Depth rating

300 m

Materials
Standard model

POM with titanium fasteners

Dimensions
Maximum diameter

215 mmMaximum length

203 mmWeightWeight in air

TBC

Weight in water

TBC

Online cable
Polyurethane jacket, Shore D hardness, 13mm in diameter, max 500m. Inquire for longer cables

Batteries
External

540Wh (alkaline) or 1800 W (lithium)