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
Signature 1000 General Arrangement - NGA061-002 Rev.-
Deployment software for all Signature series instruments as an installer file. You may download it now and install later if needed. Use the Help menu "Check for updates" function to get the latest firmware and software versions. Should a 32bit be required it may be downloaded here.
Deployment software for all Signature series instruments available through Microsoft Store. Use the Help menu "Check for updates" function to get the latest firmware and software versions.
