Overview
Need to collect accurate 3D currents very near the seabed or sea surface, in addition to a full water-column profile?
The Z-Cell (Zero Cell) 1 MHz Aquadopp allows current measurement to start right at the instrument’s level through an innovative approach: it has side-looking beams fully integrated into the instrument’s head, effectively removing the blanking distance normally applicable to ADCPs.
- Currents
- Waves
Highlights
-
Up to 25 m current profiling range
-
Capable of measuring surface or bottom currents
-
PUV-based directional wave measurements
Usage
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Mounted on bottom frames, with ability to also measure near-bed currents
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Mounted on surface buoys, with the ability to measure also surface currents
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Mean flow measurements with high focus on ease of use and simplicity
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Measurements of combinations of waves and currents
Setup
The 1MHz Aquadopp Z-Cell, designed for current measurements up to a 25m range, is set up using the Nortek deployment software, enabling users to customize measurement schemes and assess power requirements. The Z-cell functionality allows measurements at the level of the instrument head, eliminating the “blanking distance” at which most ADCPs cannot measure.
Deployment
Teams of all sizes can deploy an Aquadopp Z-Cell successfully thanks to its compact size. The instrument is optimal for deployments near boundaries such as the seabed or sea surface.
Data
Nortek postprocessing software and/or display software is available for review, visualization and processing of data, after deployment or in real time. The instrument can provide data from the level of the instrument as well as a full water column profile.
Nominal profiling range |
25 m |
Cell size |
0.25-4 m |
Maximum number of cells |
200 |
Minimum blanking |
0 m with Z-cell enabled |
Velocity range (along beam) |
±1 m/s, ±2.5 m/s, ±5 m/s |
Velocity range (horizontal) |
±2.3 m/s, ±5.75 m/s, ±11.5 m/s |
Accuracy |
±1% of measured value ±0.5 cm/s |
Horizontal Velocity precision** |
Typ. 1cm/s |
Maximum sampling rate (output) |
1 Hz |
Wave measurements |
PUV (optional) |
|
|
** Consult instrument SW |
Distance to measurement volume |
0.05 - 2.5 m |
Cell size |
0.2 - 1.5 m |
Velocity range (Horizontal) |
±5 m/s |
Transducer acoustic frequency |
2 MHz |
Number of beams |
2 |
Sampling |
Same as velocity |
Resolution |
0.5 dB |
Dynamic range |
90 dB |
Transducer acoustic frequency |
1 Mhz |
Number of beams |
3 (see GA drawing for angles) |
Beam width |
1.7° (3.4° total) |
Maximum profiling range |
8 m |
Cell size |
0.02-0.25 m |
Minimum blanking |
0.1 m |
Maximum number of cells |
256 |
Velocity range |
3 cm/s - 1.3 m/s |
Range velocity limitations |
Product of profiling range and velocity should not exceed 0.25 m2/s |
Accuracy |
±1% of measured value ±0.5 cm/s |
Max. Sampling rate |
4 Hz |
Temperature: |
|
Temp. range |
-4 to +40 °C |
Temp. accuracy/resolution |
0.1 °C/0.01 °C |
Temp. time response |
<1 min |
Compass: |
Solid State Magnetometer |
Accuracy/resolution |
<2° for tilt <30°/0.01° |
Tilt: |
Solid State Accelerometer |
Accuracy/resolution |
0.2° for tilt <30°/0.01° |
Maximum tilt |
Full 3D |
Up or Down |
Automatic detect |
Pressure: |
Piezoresistive |
Range |
30 m / 100 m / 500 m |
Accuracy/precision |
0.5% FS / 0.005% of full scale |
Capacity |
16 GB |
Accuracy |
±1 min/year |
Backup in absence of power |
4 weeks |
I/O |
RS-422 (Inquire for RS-232) |
Communication Baud Rate |
9600 Baud-1.2 Mbaud (default 115200 Baud) |
User control |
Nortek Deployment Software or direct ACSII commands, with binary or ASCII data output |
Operating system |
Agnostic |
Functions |
Deployment planning, instrument configuration, data retrieval and conversion. Online data display. |
DC input |
9-24 VDC |
Absolute maximum DC input |
26 VDC |
Maximum peak current |
4.5 A |
Power consumption |
Consult Nortek Deployment Software |
Sleep current |
< 10 uA |
Transmit power |
Adjustable |
Internal Battery capacity |
1-3x 50 Wh (Alkaline), 2-3x 165 Wh (Lithium), 1-3x 76Wh (Li-Ion) |
Battery weight |
430g per 50 Wh (Alkaline), 380g per 165 Wh (Lithium), 300g per 76Wh (Li-Ion) |
Operating temperature |
-5 to +40 °C |
Storage temperature |
-20 to +60 °C |
Shock and vibration |
Shock: IEC 60068-2-27, Vibration: IEC 60068-2-64 |
EMC |
EN IEC 61000-6-2:2019, EN IEC 61000-6-4:2019 |
Depth rating |
500 m |
Bulkhead (Impulse) |
MCBH-8-FS Brass |
Cable |
PMCIL-8-MP on 5m (default) polyurethane cable |
Standard model |
POM, Naval Brass, Titanium Gr.5, Epoxy |
Maximum housing diameter |
75 mm |
Maximum length |
602 mm |
Weight in air (without batteries) |
2280 g |
Weight in water (without batteries) |
-400 g (buoyant) |
S1VZ |
Shallow water, 1 Mhz, Vertical orientation, Z-Cell Profiler |
Aquadopp Z-Cell 1MHz (+2MHz)
1 MHz Z-Cell Head - A1Z
Standard housing for three batteries
Short housing for one battery
Pressure sensor, 0-30 m
Pressure sensor, 0-100 m
Pressure sensor, 0-500m
5m PMCIL-8-MP Serial Cable for Aquadopp 2
10m PMCIL-8-MP Serial Cable for Aquadopp 2
20m PMCIL-8-MP Serial Cable for Aquadopp 2
30m PMCIL-8-MP Serial Cable for Aquadopp 2
40m PMCIL-8-MP Serial Cable for Aquadopp 2
50m PMCIL-8-MP Serial Cable for Aquadopp 2
New features, fixes and functionality
The standard deployment software for Nortek Aquadopp and Aquadopp Profiler instruments purchased after October 2023.
The software can be launched from your web browser, installed from Microsoft Store or downloaded as an offline installer file.
Cable for external battery canister to 8-pin inline connector
Cable RS232 polyurethane with 8-pin inline connector and USB converter
Cable RS422 polyurethane with 8-pin inline connector and USB converter
Battery canister, plastic with 4*18 AA pack w/cable 8-pin inline (300m rating)
Set of Anti-fouling patches for Aquadopp Profiler Z-cell 1 MHz
This set is suitable for Aquadopp Profiler Z-cell 1 MHz
Battery, 75Wh Li-ion rechargeable
This small, rechargeable battery can be used in the main canister of your instrument.
Charger for Li-ion batteries
This charger is used to recharge the 75Wh Li-ion batteries.
