







CURRENT PROFILER
Signature1000
High-performance mean currents and turbulence, wave height and direction
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Overview
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The Signature1000 ADCP is the optimal tool for turbulence measurements. With a maximum sampling frequency of 16 Hz, it gives the scientific community an unprecedented opportunity to study a part of the turbulence spectrum that has never been accessible before. Vertical resolution current profiles of 2 cm over a range of up to 8 m further increase the Signature1000’s versatility, as does its ability to measure wave height and direction. The center beam also functions as a biological echosounder, enabling high-resolution measurements of biomass in the water column.
Highlights
- Five beams for mean currents and turbulence
- Wave height and direction
- Very small size and weight
Applications
- Turbulence studies
- Sediment transport studies
- 3D profiling using a wire walker
- Surf zone dynamics
- Studies of tidal currents
- Fine-scale mixing studies
- Vessel-mounted coastal surveying
- Directional wave measurements
- Coastal studies
- Suitable for wave buoys
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Water velocity measurements
Maximum profiling range1) 25 m (burst mode), 30 m (average mode) Cell size 0.2-2 m Minimum blanking 0.1 m Maximum number of cells 256 (burst)/200 (average) Velocity range (along beam) User-selectable 2.5 or 5.0 m/s Minimum accuracy 0.3% of measured value ± 0.3 cm/s Velocity precision Broadband processing, consult instrument software Velocity resolution 0.1 cm/s Max sampling rate 16 Hz (8 Hz using 5 beams) -
HR option (on 5th beam only)
Velocity range 3 cm/s - 1.4 m/s Cell size 2-25 cm Profiling range 10 cm - 8 m Range velocity limitations Product of profiling range and velocity should not exceed 3.0 m2/s. -
AD2CP measurement modes (US patent 8223588)
Single Burst or average Concurrent Burst and average Alternate Single and/or concurrent -
Echo intensity (along slanted beams)
Sampling Same as velocity Resolution/ dynamic range 0.5 dB / 70 dB Transducer acoustic frequency 1 MHz Number of beams 5; 4 slanted at 25°, 1 vertical Beam width 2.9° -
Echo sounder option
Resolution 3 mm - 0.25 m Number of bins 10,000 Transmit pulse length 16 μs - 0.5 ms Transmit pulse Monochromatic or pulse compressed (25% BW) Resolution / dynamic range 0.01 dB / 70 dB -
Wave measurement option
AST frequency 1 MHz AST max distance 34 m Maximum wave measurement depth 30 m Height range -15 to +15 m Accuracy/resolution (Hs) < 1% of measured value / 2 cm Accuracy/resolution (Dir) 2° / 0.1° Period range 0.5-50 s Cut-off period (Hs) 5 m depth; 0.6 sec, 20 m depth; 1.1 sec Cut-off period (dir) 5 m depth; 1.5 sec, 20 m depth; 3.1 sec Sampling rate (velocity and AST) 8 Hz -
Ice measurement option
Parameters N/A -
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 min Compass: Solid State magnetometer (max 1 Hz samplerate) Accuracy/resolution 2° for tilt < 30°/0.01° Tilt: Solid State accelerometer (max 1 Hz sample rate) Accuracy/resolution 0.2° for tilt < 30°/0.01° Maximum tilt Full 3D Up or Down Automatic detect Pressure: Piezoresistive (sampled at meas. rate) Standard range 0-100 m (inquire for options) Accuracy/precision 0.1% FS / Better than 0.002% of full scale -
AHRS option
Accelerometer dynamic range ± 2 g Gyro dynamic range ± 250°/sec Magnetometer dynamic range ± 1.3 Gauss Pitch and roll range / resolution ± 90° (pitch) ± 180° (roll) /0.01° Pitch and roll accuracy ± 2° (dynamic)*, ± 0.5° (static, ±30°) Heading range / resolution 360°, all axis /0.01° Heading accuracy ± 3° (dynamic)4), ± 2° (static, tilt < 20°) Sampling rate Same as measurement rate (up to 16 Hz) * Dynamic specifications depends on the type of motion. -
Data recording
Capacity 16 GB, 64 GB or 128 GB (inquire for larger capacity) Data record Consult instrument software Mode Stop when full -
Real-time clock
Accuracy ± 1 min/year Clock retention in absence of external power 1 year. Rechargeable backup battery -
Data communications
Ethernet 10/100 Mbits Auto MDI-X, TCP/IP, UDP/IP, HTTP protocols, Fixed IP / DHCP client /Auto IP address assignment, UPnP and Nortek proprietary instrument, discovery over Ethernet Serial Configurable 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 serial -
Connectors
Depending on configuration MCBH6F (Ethernet), MCBH8F (serial), MCBH2F-G2 (pwr), optional Souriau M-series metal connector for online use (10M) -
Software
Functions Deployment planning, instrument configuration, data retrieval and conversion (for Windows®) -
Power
DC 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 Parallel -
Batteries
Internal 90 Wh alkaline Duration Depending on configuration, consult software -
Environmental
Operating temperature -4 to +40 °C Storage temperature -20 to +60 °C Vibration IEC60068-2-64 EMC approval IEC/EN 61000-6-2, 61000-6-3 Depth rating 300 m (for 4000 m version, contact Nortek for specifications) -
Materials
Standard model POM with titanium fasteners -
Dimensions
Maximum diameter 142 mm Maximum length with room for internal batteries 212 mm Maximum length without room for internal batteries 152 mm -
Weight
In air, no battery 2.21 kg (1.9 kg short) In water, no battery -0.09 kg (0.3 kg short) Battery 0.71 kg
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Technical drawings
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Approvals
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Main product
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Signature1000
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Probe type / Head
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5-beam head
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Housing
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Standard, with room for internal battery
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Short, no room for battery
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Memory
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16 GB SD card data logger
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64 GB SD card data logger
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Pressure sensors
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Pressure sensor, 0-10 m, 0,1%
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Pressure sensor, 0-20 m, 0,1%
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Pressure sensor, 0-30 m, 0,1%
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Pressure sensor, 0-50 m, 0,1%
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Pressure sensor, 0-100 m, 0,1%
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Pressure sensor, 0-200m, 0,1%
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Pressure sensor, 0-500m, 0,1%
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Pressure sensor, 0-500m, 0,1% (Note: instrument depth rating is 300m)
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Cables
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10m Ethernet cable with MCIL6MP, Power/RJ45 at dry end
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10-100m Ethernet cable (specify length in comments field) with MCIL6MP-PWR/RJ45
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10m Serial RS232 cable, MCIL8MP-DB12
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10m Serial RS232 cable, MCIL8MP-DB9 w/RS485 trigger
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Serial RS422 cable >10m (specify length in comments field), MCIL8MP-DB9
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Online cable, Souriau 10M open ended, (specify length in comments field)
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Online cable, Souriau 10M PWR/RJ45, max 100m, (specify length in comments field)
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Other
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Compass and tilt sensor
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AHRS
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