Aquadopp - Nortek USA
Deep water Aquadopp current meters can be used anywhere in the ocean and
provide accurate data both to scientist and engineers. The instrument is small
in size but has a sophisticated interface that makes it ideal for use as part of
integrated measurement systems.
Aquadopp©
6000m
All dimensions in mm.
User selectable
Measurement Cell
(0.35–5.0m)
Blanking
The Aquadopp® measures the Doppler shift occurring, when
transmitting and receiving sound pulses transmitted along two or
more narrow acoustic beams. This shift is proportional to the velocity component along those beams. By combining this information
with the exact beam geometry, either 2D (2 beams) or 3D (3 beams)
velocity is calculated.
The most common Aquadopp application is classical in-line mooring
use, where one or more instruments are mounted on a rope or cable
that stretches from the bottom to a subsurface float.
CURRENT AND WAVE MEASUREMENTS IN THE OCEAN, LAKE AND LABORATORY
Nortek AS
Vangkroken 2
1351 Rud, Norway
Tel: +47 6717 4500
Fax: +47 6713 6770
E-mail: inquiry@nortek.no
www.nortek-as.com
True innovation makes a difference
Technical Specifications
Water Velocity Measurement
Power
Range:
± 3m/s (inquire for higher ranges)
DC input:
9–15VDC
Accuracy:
1% of measured value ± 0.5 cm/s
Peak current:
3A at 12VDC (user adjustable)
Maximum sampling
rate (output):
1Hz
Max consumption 1Hz:
1.4 W
Internal sampling rate:
23Hz
Avg. consumption:
0.2W (0.02Hz), 0.02W (0.002Hz)
Sleep consumption:
0.0013 W
Transmitt power:
0.3-20W, 3 adjustable levels
Battery capacity:
50 Wh. Extended version has two battery packs
(i.e. double capacity)
New battery voltage:
13.5 Vdc
Data collection (alkaline):
5 months at 10-min, ±1.0cm/s noise (10 months
for double battery version at 10-min, ±1.0cm/s
noise)
Data collection (lithium):
15 months at 10-min, ±1.0cm/s noise (30 months
for double battery version at 10-min, ±1.0cm/s
noise)
Measurement Area
Measurement cell size:
0.75m
Measurement cell position:
0.35–5.0m(user selectable)
Default position (along beam):
0.35–1.85m
Doppler Uncertainty (noise)
Typical uncertainty for
default configurations:
0.5–1.0cm/s
Uncertainty in U,V at 1Hz
sampling rate:
1.5cm/s
Echo Intensity
Real time clock
Acoustic frequency:
2MHz
Resolution:
0.45dB
Dynamic range:
90dB
Sensors
Temperature:
Thermistor embedded in head
Range:
–4°C to 40°C
Accuracy/Resolution:
0.1°C/0.01°C
Time response:
10 min
Compass:
Magnetometer
Accuracy/Resolution:
2°/0.1° for tilt < 20°
Tilt:
Liquid level
Accuracy/Resolution:
0.2°/0.1°
Maximum tilt:
30°
Accuracy:
+/- 1min/year
Backup in absence of power:
4 weeks
Connectors
Bulkhead (Impulse):
MCBH-8-FS, titanium
Cable:
PMCIL-8-MP on 10m polyurethane cable
Materials
Standard model:
Delrin® and titanium
Environmental
Operating temperature:
–4°C to 40°C
Storage temperature:
–20°C to 60°C
Shock and vibration:
IEC 721-3-2
Pressure rating:
0–6000m
Antifouling Paint
Up or down:
Automatic detect
Pressure:
Piezoresistive
Standard Range:
6000m
Accuracy/Resolution:
0.5% / Better than 0.005% of full scale per
sample
May be applied to all surfaces
Dimensions
Analog inputs
Cylinder:
see dimensional drawings
Approx. weight in air:
7,6kg
Approx. weight in water:
4.8kg
Options
Number of channels:
2
Voltage supply:
Three options selectable through
firmware commands:
•Battery voltage / 500 mA
•+5V / 250 mA
•+12V /100 mA
Voltage input:
0–5V
Resolution:
16 bit A/D
Battery:
Lithium or lithium Ion
External batteries:
Alkaline, Lithium or Lithium Ion
(see battery brochure for details)
Head configuration:
Inquire
Data Communication
I/O:
RS 232, analog input, RS 422 or analog output.
Software supports most commercially available
USB–RS232 converters
Communication Baud rate:
300–115200 Baud
Recorder download baud rate: 600/1200 kBaud for both RS232 and RS422
User control:
Handled via Win32® software, ActiveX® function
calls, or direct commands with binary or ASCII
data output
Software (“Aquadopp DW”)
Operating system:
Windows®XP, Windows®7
Functions:
Deployment planning, start with alarm, data
retrieval, ASCII conversion. Online data collection
and graphical display. Test modes
Capacity(standard):
9 MB, can add 32/176/352/MB
Data record:
40 bytes
Diagnostic record:
40 bytes
NortekMed S.A.S.
Z.I. Toulon Est
BP 520
83 078 TOULON cedex 09
FRANCE
Tel: +33 (0) 4 94 31 70 30
Fax: +33 (0) 4 94 31 25 49
E-mail: info@nortekmed.com
NortekUK
Mildmay House, High St.
Hartley Wintney
Hants. RG27 8NY
Tel: +44- 1428 751 953
E-mail: inquiry@nortekuk.co.uk
TS-022-en-06.2010
Data Recording
Contact Nortek or your local
representative for information
about sensor head geometries
and application area.
NortekUSA
222 Severn Avenue
Building 14, Suite 102
Annapolis, MD 21403
Tel: +1 (410) 295-3733
Fax: +1 (410) 295-2918
E-mail: inquiry@nortekusa.com
Tel: 0532-85017570, 85017270
Fax: 0532-85017570
E-mail: inquiry@nortek.com.cn
Nortek B.V.
Schipholweg 333a
1171PL Badhoevedorp
Nederland
Tel: +31 20 6543600
Fax: +31 20 6599830
email: info@nortek-bv.nl
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