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) 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
-
Mounted on bottom frames, with ability to measure also near-bed currents
-
Mean flow measurements with high focus on ease of use and simplicity
-
Measurements in flow regimes with strong variations in flow speeds
-
Projects with needs for both high-resolution and normal-range current measurements
-
Studies of tidal currents
-
Measurements of combinations of waves and currents
-
Mounted on surface buoys, with the ability to measure also surface 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.
| Maximum profiling range | 12-25 m |
| Cell size | 0.3-4 m |
| Minimum blanking | 0.20 m when profiling; 0 m when Z-Cell enabled |
| Maximum number of cells | 96 |
| Measurement cell position | N/A |
| Default position (along beam) | N/A |
| Velocity range | ±10 m/s |
| Accuracy | ±1% of measured value ±0.5 cm/s |
| Velocity precision | Consult instrument software |
| Maximum sampling rate (output) | 1 Hz |
| Internal sampling rate | 6 Hz |
| Sampling | Same as velocity |
| Resolution | 0.45 dB |
| Dynamic range | 90 dB |
| Transducer acoustic frequency | 1 MHz |
| Number of beams | 3 |
| Beam width | 3.4° |
| Maximum profiling range | 6 m |
| Cell size | 20-300 mm |
| Minimum blanking | 0.2 m |
| Maximum number of cells | 128 |
| Range/Velocity limitations | Product of profiling range and velocity should not exceed 1.0 m2/s |
| Accuracy | ±1% of measured value ±0.5 cm/s |
| Max. sampling rate | 1 Hz (continuous mode), 8 Hz (burst mode)” |
| Cell zero acoustic frequency | 2 MHz |
| Maximum profiling range | 0.4-0.9 m |
| Number of beams | 3 |
| Temperature: | Thermistor embedded in head |
| Temp. range | -4 to +40 °C |
| Temp. accuracy/resolution | 0.1 °C/0.01 °C |
| Temp. 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° |
| Up or Down | Automatic detect |
| Pressure: | Piezoresistive |
| Range | 0-100 m (inquire for options) |
| Accuracy/precision | 0.5% FS / 0.005% of full scale |
| No. of channels | 2 |
| Supply voltage to analog output devices | Three options selectable through firmware commands: 1) Battery voltage/500 mA, 2) +5 V/250 mA, 3) +12 V/100 mA |
| Voltage input | 0-5 V |
| Resolution | 16-bit A/D |
| Capacity | 9 MB, can add 4/16 GB |
| Data record | 9*Ncells + 32 bytes |
| Diagnostics record | N/A |
| Wave record | Nsamples * 24 + 60 bytes |
| Mode | Stop when full (default) or wrap mode |
| Accuracy | ±1 min/year |
| Backup in absence of power | 4 weeks |
| I/O | RS-232 or RS-422 |
| Communication baud rate | 300-115200 Bd |
| Recorder download baud rate | 600/1200 kBd for both RS-232 and RS-422 |
| User control | Handled via "Aquadopp" software, ActiveX®function calls, or direct commands with binary or ASCII data output |
| Bulkhead | MCBH-8-FS |
| Cable | PMCIL-8-MP on 10 m polyurethane cable |
| Functions | Deployment planning, instrument configuration, data retrieval and conversion (for Windows®). |
| DC input | 9-15 V DC |
| Maximum peak current | 3 A |
| Avg. power consumption | 0.05 W |
| Sleep current | < 100 μA |
| Transmit power | 0.3-20 W, 3 adjustable levels |
| Battery capacity | 50 Wh (alkaline or Li-ion), 165 Wh (lithium), Single or dual |
| New battery voltage | 13.5 V DC (alkaline) |
| Operating temperature | -5 to +40 °C |
| Storage temperature | -20 to +60 °C |
| Shock and vibration | IEC 721-3-7 |
| EMC approval | IEC 61000 |
| Depth rating | 300 m |
| Standard model | POM and polyurethane plastics with titanium fasteners |
| Maximum diameter | 75 mm |
| Maximum length | ~550 mm (single battery), +110 mm (double battery) depending on head configuration |
| Weight in air | 2.2 kg |
| Weight in water | 0.2 kg |
| 1) Alkaline, lithium or Li-ion external batteries, 2) Inquire for different head configurations |
Aquadopp Z-Cell 1MHz (+2MHz)
1 MHz Z-Cell Head - A1Z
Standard housing for two batteries or one 100Wh package
Short housing for one battery
Extra short housing for no batteries
9 MB of memory on motherboard (M8)
4 GB SD card data logger
16 GB SD card data logger
Pressure sensor, 0-10 m
Pressure sensor, 0-20 m
Pressure sensor, 0-30 m
Pressure sensor, 0-50 m
Pressure sensor, 0-100 m
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
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, 13.5 V - 50 Wh, alkaline
This slim battery can be used inside the main canister of your Nortek instrument.
Battery, 13.5 V - 100 Wh, alkaline
This slim battery can be used inside the main canister of your Nortek instrument.
Battery, 12 V - 165 Wh, lithium
This battery can be used inside the main canister of your Nortek instrument.
Battery canister, plastic with 4*18 AA pack w/cable 8-pin inline (300m rating)
Battery pack, 5-pack, 13.5 V - 50 Wh, alkaline
This slim battery can be used inside the main canister of your Nortek instrument.
Battery pack, 10-pack, 13.5 V - 50 Wh, alkaline
This slim battery can be used inside the main canister of your Nortek instrument.
Battery pack, 5-pack, 13.5 V - 100 Wh, alkaline
This slim battery can be used inside the main canister of your Nortek instrument.
Battery pack, 10-pack, 13.5 V - 100 Wh, alkaline
This slim battery can be used inside the main canister of your Nortek instrument.
Battery pack, 5-pack, 12 V - 165 Wh, lithium
This battery can be used inside the main canister of your Nortek instrument.
Battery pack, 10-pack, 12 V - 165 Wh, lithium
This battery can be used inside the main canister of your Nortek instrument.
Set of Anti-fouling patches for Aquadopp Profiler Z-cell 1 MHz
This set is suitable for Aquadopp Profiler Z-cell 1 MHz
