> 1000 m current profiling range for stand-alone and online applications

  • > 1000 m current profiling range
  • Stand-alone and online applications
  • Concurrent high-resolution and long-range measurements
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  • The Signature55 ADCP is a current profiler that combines an ultralong range with a compact layout. Novel ADCP transducer design allows 1000 m profiles concurrent with slightly shorter-range, finer resolution measurements using two different frequencies in the same instrument. The more than 90% lower power consumption (compared to similar ADCPs) also permits long-duration deployments operating on internal batteries only.


  • > 1000 m current profiling range
  • Stand-alone and online applications
  • Concurrent high-resolution and long-range measurements


  • Observing deep-ocean current profiles
  • Current measurements for deep-water meteorological buoys
  • Fine and coarse deep-water current profiles

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    • Water velocity measurements

      Maximum profiling range* 1000 m (55 kHz), 600+ (75 kHz)
      Cell size 5-20 m
      Minimum blanking 2 m
      Maximum number of cells 200
      Velocity range (along beam) User-selectable 1 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 (1/3 Hz at max power)
      * Maximum range depends on transmit power and 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 N/A
      Alternate Single (coarse/fine)
      * US Patent 8223588
    • Echo intensity (along slanted beams)

      Sampling Same as velocity
      Resolution/ dynamic range 0.5 dB / 70 dB
      Transducer acoustic frequency 55 and 75 kHz
      Number of beams 3, slanted at 20°
      Beam width 4.5°-5.5°
    • Echo sounder option

      Resolution N/A
      Number of bins N/A
      Transmit pulse length N/A
      Transmit pulse N/A
      Resolution / dynamic range N/A
    • 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° (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-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 (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 4-250 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
    • Materials

      Standard model POM with titanium fasteners. Reinforced polyurethane transducer cups
    • Dimensions

      Maximum diameter 648 mm
      Maximum length with room for internal batteries 547 mm (1 battery), 747 mm (2 batteries)
      Maximum length without room for internal batteries 314 mm
    • Weight

      In air, no battery 65.5 kg
      In water, no battery 25.1 kg
      Battery 10.2 kg (2 x 540 Wh), 7.6 kg (2 x 1800 Wh)

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    • Main product



    • Probe type / Head


      3x55 kHz transducer head

    • Housing


      Long (for two internal batteries or one battery and DSL)


      Medium (for one internal battery or DSL modem)


      Short (no internal batteries or DSL modem)

    • Memory


      16 GB SD card data logger


      64 GB

    • Pressure sensors


      Pressure sensor, 0-100 m, 0,1%


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


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

    • Cables


      10m Ethernet cable with MCIL6MP, Power/RJ45 at dry end


      10-100m Ethernet cable (specify length in comments field) with MCIL6MP-PWR/RJ45


      10m Serial RS232 cable, MCIL8MP-DB12


      10m Serial RS232 cable, MCIL8MP-DB9 w/RS485 trigger


      Serial RS422 cable >10m (specify length in comments field), MCIL8MP-DB9


      Online cable, Souriau 10M open ended, (specify length in comments field)


      Online cable, Souriau 10M PWR/RJ45, max 100m, (specify length in comments field)

    • Other


      Compass and tilt sensor



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    • Nortek Discover

    • Ocean Contour

      Data visualization and processing software

    • Serial to USB driver

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

    • Signature 55

      Recommended upgrade. New features, fixes and functionality

    • Signature Deployment (Installer file)

      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.

    • Signature Deployment (Microsoft Store version - installer file)

      The installer file of Signature Deployment as available through Microsoft Store. Use the Help menu "Check for updates" function to get the latest firmware and software versions.

    • Signature Deployment (Microsoft Store version)

      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.

    • SignatureViewer

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

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