Nortek Awac 1 Mhz Sideview
Nortek AWAC 1 M Hz frontview
Nortek AWAC 1 M Hz topview
Nortek 30978278355 kopi
Nortek People Awac 1 Mhz Assemble
Nortek Awac 1 Mhz Sideview
Nortek AWAC 1 M Hz frontview
Nortek AWAC 1 M Hz topview
Nortek 30978278355 kopi
Nortek People Awac 1 Mhz Assemble

Oceanography

AWAC - 1 MHz

Profil de courant et houle directionnelle en zone côtière

Overview

L'AWAC 1 MHz est l'instrument de référence pour les mesures de houle à partir du fond. Des milliers d'AWAC ont déjà été déployés à travers le monde pour mesurer la houle directionnelle ainsi que les profils de courant. Avec une portée de 35 m et avec un échantillonnage jusqu'à 4 Hz de la surface, l'AWAC est l'outil de prédilection pour les mesures de courant et de houle en zone côtière.

  • Currents
  • Waves

Highlights

  • Mesure des profils de courant jusqu'à une portée de 30 m
  • Mesure de la houle directionnelle jusqu'à une immersion de 35 m
  • Tracking acoustique de la surface (AST) avec un faisceau vertical
  • Peut être utilisé sur des structures fixes ou des bouées de subsurface

Usage

  • Mesure temps réel du courant et de la houle
  • Aménagement de structures côtières
  • Étude de sites pour champ éolien en mer
  • Étude érosion côtière
  • Campagne de mesures où le spectre directionnel total de houle est souhaité
  • Étude d'agitation en milieu portuaire
  • Étude des courants de marée

Setup

Designed for straightforward and reliable current and wave measurements in up to 35m of water, the AWAC 1MHz is configured using Nortek deployment software before installation. The AWAC is often considered the industry standard in wave measurements.

Deployment

AWACs are often bottom-mounted and/or implemented as part of real-time wave monitoring systems. Leading industry partners offer bespoke frames and buoys for the AWAC. Multiple communication protocols make simultaneous power and data transmission easy.

Data

Optional onboard wave processing allows real-time streaming of wave parameters to users onshore. Nortek’s SUV processing method (exclusive to AWACs and Signatures) enables quality wave measurements from a moving subsurface buoy. Nortek postprocessing software and/or display software is available for review or visualization of data, after deployment or in real time.

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Maximum profiling range 30 m
Cell size 0.25-4.0 m
Number of cells Typical 20-40, max. 128
Velocity range ±10 m/s horizontal, ±5 m/s along beam
Accuracy ±1% of measured value ±0.5 cm/s
Velocity precision Consult instrument software
Maximum output rate 1 Hz
Internal sampling rate 7 Hz

Sampling Same as velocity
Resolution 0.45 dB
Dynamic range 90 dB
Transducer acoustic frequency 1 MHz
Number of beams 3 beams 120° apart, one vertical beam (90° apart, one at 5° for platform mount)
Beam width 1.7°
Beam width vertical beam 1.7°

Maximum depth 35 m
Data types Pressure, one velocity along each beam, AST
Sampling rate velocity (output) 2 Hz
Sampling rate AST (output) 4 Hz
No. of samples per burst 512, 1024 or 2048

Range -15 to 15 m
Accuracy/resolution (Hs) < 1% of measured value / 1 cm
Accuracy/resolution (Dir) 2° / 0.1°
Period range 0.5-50 s
Cut-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

Temperature: Thermistor embedded in housing
Temp. range -4 to +40 °C
Temp. accuracy/resolution 0.1 °C/0.01°C
Temp. time response < 5 min
Compass: Magnetoresistive
Accuracy/resolution 2°/0.1° for tilt <15°
Tilt: Liquid level
Accuracy/resolution 0.2°/0.1°
Maximum tilt 30°,AST requires <10° instrument tilt
Up or Down Automatic detect
Pressure: Piezoresistive
Range 50 m
Accuracy 0.5% of full scale (optional 0.1% of full scale)
Resolution 0.005% of full scale

No. of channels 2
Supply voltage to analog output devices Three options selectable through firmware commands: Battery voltage/500 mA, +5V/250 mA, +12V/100 mA
Voltage input 0-5 V
Resolution 16-bit A/D

Capacity 9 MB standard, 4/16 GB (Prolog)
Profile record Ncells*9 + 120 bytes
Wave record Nsamples*24 + 1k bytes
Mode Stop when full (default and Prolog) or wrap mode

Accuracy ±1 min/year
Backup in absence of power 1 year

I/O RS-232 or RS-422. Software supports most commercially available USB– RS-232 converters
Communication baud rate 300- 115200 Bd
Recorder download baud rate 600/1200 kBd for both RS-232 and RS-422
User control Handled via "AWAC AST" software, or ActiveX® controls. "Seastate" for online systems
Output formats NMEA, Binary. Prolog provides same types also for processed wave and current data.

Bulkhead MCBH-2-FS, MCBH-8-FS, optional Souriau M-series metal connector for online use
Cable PMCIL-8-MP on 10 m polyurethane cable, metal connector optional

Functions Deployment planning, instrument configuration, data retrieval and conversion. (for Windows®)

DC input 9- 18V DC
Maximum peak current 3 A
Avg. power consumption 0,65 W
Sleep current < 100 μA
Transmit power 1-30W, 3 adjustable levels

Operating temperature -4 to +40 °C
Storage temperature -20 to +60 °C
Shock and vibration IEC 721-3-2
EMC approval IEC 61000
Depth rating 300m

Standard model POM and polyurethane plastics with titanium fasteners

Maximum diameter 210 mm
Maximum length 175 mm

Weight in air 6.1 kg
Weight in water 2.9 kg

Polyurethane jacket, Shore D hardness, 13mm in diameter, max 2km. Inquire for longer cables

AWAC 1MHz General Arrangement-2 - NGA009-001 Rev.-

Declaration of conformity

AWAC 1 MHz, four beams

Symmetrical transducer orientation

Platform head

9 MB of memory on motherboard (M8)

4 GB SD card data logger

16 GB SD card data logger

ProLog with wave processing

Pressure sensor, 0-10 m

Pressure sensor, 0-20 m

Pressure sensor, 0-20m, accuracy 0,1% of FS

Pressure sensor, 0-30 m

Pressure sensor, 0-50 m

Pressure sensor, 0-50m, accuracy 0,1% of FS

Pressure sensor, 0-100 m

Pressure sensor, 0-100m, accuracy 0,1% of FS

Pressure sensor, 0-200m

10m RS232 polyurethane cable with 8-pin inline connector and USB converter

20m RS232 polyurethane cable with 8-pin inline connector and USB converter

30m RS232 polyurethane cable with 8-pin inline connector and USB converter

40m RS232 polyurethane cable with 8-pin inline connector and USB converter

50m RS232 polyurethane cable with 8-pin inline connector and USB converter

10m RS422 polyurethane cable with 8-pin inline connector and USB converter

20m RS422 polyurethane cable with 8-pin inline connector and USB converter

30m RS422 polyurethane cable with 8-pin inline connector and USB converter

40m RS422 polyurethane cable with 8-pin inline connector and USB converter

50m RS422 polyurethane cable with 8-pin inline connector and USB converter

Compass and tilt sensor

Without compass and tilt sensor

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