







CURRENT PROFILER
Signature100
Long-range current profiler designed for combined current profile and biomass measurements
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Overview
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The Signature100 combines a four-beam current profiler operating at 100 kHz with an optional scientific echosounder.
Both the current profiler and the biomass measurements have an effective range of 300-400 m providing unprecedented insight into the dynamics of zooplankton, krill or even schools of fish. Likewise, acoustic tracer material can give new insight into small-scale physical processes.
Highlights
- 300–400 m current profiling range
- Optional center beam with 70–120 kHz echosounder
Applications
- Detection of krill in the water column
- Cost-effective current profile measurements at mid-range
- Plankton migration studies
- Upwelling and downwelling studies
- Internal waves
- Suitable for buoy mounting with internal AHRS
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Water velocity measurements
Maximum profiling range 300-400 m* Cell size 3–15 m Minimum blanking TBA Maximum number of cells 200 Velocity range (along beam) User-selectable 2.5 or 5.0 m/s Minimum accuracy 1% of measured value ± 0.5 cm/s Velocity precision Broadband processing, consult instrument software Velocity resolution 0.1 cm/s Max sampling rate 1 Hz (1/2 Hz at max output power) *Maximum range depends on acoustic scattering conditions. -
HR option (on 5th beam only)
Velocity range N/A Cell size N/A Profiling range N/A Range velocity limitations N/A -
AD2CP Measurement modes*
Single Average Concurrent Average and echosounder Alternate N/A * US Patent 8223588 -
Echo Intensity (along slanted beams)
Sampling Same as velocity Resolution/dynamic range 0.5 dB/70 dB Transducer acoustic frequency 100 kHz Number of beams 4 slanted at 20°, optional vertical beam for echosounder Beam width 6.1° (slanted) -
Echosounder option
Transducer acoustic frequency 70–120 kHz Transducer beam width 15° @ 70 kHz, 8.7° @ 120 kHz Resolution 0.375–4 m Number of bins 1800 Transmit pulse length 0.5–6 ms Transmit pulse Monochromatic 70 kHz, 90 kHz and 120 kHz or frequency chirp (90 kHz, 50% BW) Transmit power 1.2–120 W, adjustable Chirp signal processing Pulse compression or binned frequency response Raw complex data storage Configurable rate Resolution/dynamic range 0.01 dB / 130 dB Linearity TBA -
Wave measurement option
AST frequency N/A AST max distance N/A Maximum wave measurement depth N/A Height range N/A Accuracy/resolution (Hs) N/A Accuracy/resolution (Dir) N/A Period range N/A Cut-off period (Hs) N/A Cut-off period (dir) N/A Sampling rate (velocity and AST) N/A -
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 sample rate) 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 0–1500 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)2), ± 2° (static, tilt < 20°) Sampling rate Same as measurement rate (up to 1 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-XTCP/IP, UDP, HTTP protocolsFixed IP/DHCP client/AutoIP, UPnP 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 (14M) -
Software
Functions Deployment planning, instrument configuration, data retrieval and conversion (for Windows®) -
Power
DC input 15–48 V DC Maximum peak current 1.5 A Max. average consumption at 1 Hz 15 W Typical average consumption* 2 W Sleep consumption 100 μA, power depending on supply voltage Transmit power per beam 4–200 W, adjustable levels Ping sequence Multiplexing or parallel * 10 min. avg. profile,1 cm/sec hor. prec., max cell size, max power, long range mode. Consult SW for other configurations -
Batteries
Internal One or two 540 Wh alkaline or 1800 Wh lithium 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 1500 m (for 6000 m version, contact Nortek for specifications) -
Materials
Standard model POM with titanium fasteners. Titanium/POM transducer cups -
Dimensions
Maximum diameter 460 mm Maximum length with room for internal batteries 765 mm (2 batteries) Maximum length without room for internal batteries N/A -
Weight
In air, no battery 37.5 kg In water, no battery 13 kg Battery 10.0 kg (2x540 Wh), 5.8 kg (2x1800 Wh)
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Technical drawings
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Approvals
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Main product
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Signature100
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Probe type / Head
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4-beam head
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5-beam head (adds 95 kHz center transducer for echo sounder)
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Housing
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Long (for two internal batteries)
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Medium (for one internal battery)
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Short (no internal 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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128 GB SD card data logger
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Pressure sensors
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Pressure sensor, 0-1500 m, accuracy 0,1% of FS
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Pressure sensor, 0-100 m, accuracy 0,1% of FS
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Pressure sensor, 0-1000 m, accuracy 0,1% of FS
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Cables
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10m Ethernet cable with MCIL6MP, Power/RJ45
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10-100m Ethernet cable (specify length in comments field) with MCIL6M-PWR/RJ45
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10m Serial RS232 cable, MCIL8M-DB9
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10m Serial RS232 cable, MCIL8M-DB9 w/RS485 trigger
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Serial RS422 cable >10m (specify length in comments field), MCIL8M-DB9
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Online cable, Souriau 14M open ended, (specify length in comments field)
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Online cable, Souriau 14M PWR/RJ45, max 100m, (specify length in comments field)
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Online cable for RS-422 interface box, Souriau 14M (specify length in comments field)
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Other
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AHRS
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Compass and tilt
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