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Current profiler

Signature100

Long-range current profiler designed for combined current profile and biomass measurements

Technical specification (PDF)
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Highlights

  • 300–400 m current profiling range
  • Optional center beam with 70–120 kHz echosounder

Overview

  • 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.

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
      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
      Shock and vibration IEC 60068-1/IEC 60068-2-64
      EMC approval IEC 61000
      Depth rating 1500 m

    • 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

      Signature 100 General Assembly - NGA061-007 Rev.-A

      Download this

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    • Main product

      01

      Signature100

    • Probe type / Head

      01

      4-beam head

      02

      5-beam head (adds 95 kHz center transducer for echo sounder)

    • Housing

      01

      Long (for two internal batteries)

      02

      Medium (for one internal battery)

      03

      Short (no internal battery)

    • Memory

      01

      16 GB SD card data logger

      02

      64 GB SD card data logger

      03

      128 GB SD card data logger

    • Pressure sensors

      01

      Pressure sensor, 0-1500 m, accuracy 0,1% of FS

      02

      Pressure sensor, 0-100 m, accuracy 0,1% of FS

      03

      Pressure sensor, 0-1000 m, accuracy 0,1% of FS

    • Cables

      01

      10m Ethernet cable with MCIL6MP, Power/RJ45

      02

      10-100m Ethernet cable (specify length in comments field) with MCIL6M-PWR/RJ45

      03

      10m Serial RS232 cable, MCIL8M-DB9

      04

      10m Serial RS232 cable, MCIL8M-DB9 w/RS485 trigger

      05

      Serial RS422 cable >10m (specify length in comments field), MCIL8M-DB9

      06

      Online cable, Souriau 14M open ended, (specify length in comments field)

      07

      Online cable, Souriau 14M PWR/RJ45, max 100m, (specify length in comments field)

      08

      Online cable for RS-422 interface box, Souriau 14M (specify length in comments field)

    • Other

      01

      AHRS

      02

      Compass and tilt

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    • Ocean Contour

      Data visualization and processing software

      Go to Software download

    • Serial to USB driver

      Virtual COM port driver to allow Nortek's serial-to-USB converters to function.

      Go to Software download

    • SignatureDeployment

      Deployment software for all Signature series instruments. Use the Help menu "Check for updates" function to get the latest firmware and software versions.

      Go to Software download

    • SignatureViewer

      Data viewer and post-processing software for Signature series instruments.

      Go to Software download
    Case studies

    Keeping fisheries sustainable with groundbreaking new acoustic technology

    Read more
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