> 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


  • 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.


  • Protecting infrastructure from cross currents using real-time monitoring
  • Observing deep-ocean current profiles
  • Fine and coarse deep-water current profiles
  • Current measurements for deep-water meteorological buoys
  • Suitable for wave buoys
    • Water velocity measurements

      Maximum profiling range*1000 m (55 kHz), 600+ (75 kHz)
      Cell size5-20 m
      Minimum blanking2 m
      Maximum number of cells200
      Velocity range (along beam)User-selectable 1 or 5.0 m/s
      Minimum accuracy1% of measured value ± 0.5 cm/s
      Velocity precisionBroadband processing, consult instrument software
      Velocity resolution0.1 cm/s
      Max sampling rate1 Hz (1/3 Hz at max power)
      * Maximum range depends on transmit power and acoustic scattering conditions
    • HR option (on 5th beam only)

      Velocity rangeN/A
      Cell sizeN/A
      Profiling rangeN/A
      Range velocity limitationsN/A
    • AD2CP measurement modes*

      AlternateSingle (coarse/fine)
      * US Patent 8223588
    • Echo intensity

      SamplingSame as velocity
      Resolution/ dynamic range0.5 dB / 70 dB
      Transducer acoustic frequency55 and 75 kHz
      Number of beams3, slanted at 20°
      Beam width4.5°-5.5°
    • Echo sounder option

      Number of binsN/A
      Transmit pulse lengthN/A
      Transmit pulseN/A
      Resolution / dynamic rangeN/A
    • Wave measurement option

      AST frequencyN/A
      AST max distanceN/A
      Maximum wave measurement depthN/A
      Height rangeN/A
      Accuracy/resolution (Hs)N/A
      Accuracy/resolution (Dir)N/A
      Period rangeN/A
      Cut-off period (Hs)N/A
      Cut-off period (dir)N/A
      Sampling rate (velocity and AST)N/A
    • Ice measurement option

    • Sensors

      Temperature:Thermistor in head (sampled at meas. rate)
      Temp. range-4 to +40 °C
      Temp. accuracy/resolution0.1 °C/0.01 °C
      Temp. Time response2 min
      Compass:Solid State magnetometer (max 1 Hz sample rate)
      Accuracy/resolution2° for tilt < 30°/0.01°
      Tilt:Solid State accelerometer (max 1 Hz sample rate)
      Accuracy/resolution0.2° for tilt < 30°/0.01°
      Maximum tiltFull 3D
      Up or DownAutomatic detect
      Pressure:Piezoresistive (sampled at meas. rate)
      Standard range0-1500 m (inquire for options)
      Accuracy/precision0.1% 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 / resolution360°, all axis /0.01°
      Heading accuracy± 3° (dynamic)*, ± 2° (static, tilt < 20°)
      Sampling rateSame as measurement rate (up to 1 Hz)
      * Dynamic specifications depends on the type of motion
    • Data recording

      Capacity16 GB, 64 GB or 128 GB (inquire for larger capacity)
      Data recordConsult instrument software
      ModeStop when full
    • Real-time clock

      Accuracy± 1 min/year
      Clock retention in absence of external power1 year. Rechargeable backup battery.
    • Data communications

      Ethernet10/100 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
      SerialConfigurable RS-232/RS-422 300-1250000 bps
      Recorder download baud rate20 Mbit/s (Ethernet only) - 1 GB in 6 minutes
      Controller interfaceASCII command interface over Telnet and serial
    • Connectors

      Depending on configurationMCBH6F (Ethernet), MCB-H8F (serial), MCBH2F-G2 (pwr), Souriau 14M-7p (online)
    • Software

      FunctionsDeployment planning, instrument configuration, data retrieval and conversion (for Windows®)
    • Power

      DC input15-48 V DC
      Maximum peak current1.5 A
      Max. average consumption at 1 Hz15 W
      Typical average consumption*2 W
      Sleep consumption100 μA, power depending on supply voltage
      Transmit power per beam4-250 W, adjustable levels
      Ping sequenceMultiplexing 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

      InternalOne or two 540 Wh alkaline or 1800 Wh lithium
      DurationDepending on configuration, consult software
    • Environmental

      Operating temperature-4 to +40 °C
      Storage temperature-20 to +60 °C
      Shock and vibrationIEC 60068-1/IEC60068-2-64
      EMC approvalIEC 61000
      Depth rating1500 m
    • Materials

      Standard modelPOM with titanium fasteners. Reinforced polyurethane transducer cups
    • Dimensions

      Maximum diameter648 mm
      Maximum length with room for internal batteries547 mm (1 battery), 747 mm (2 batteries)
      Maximum length without room for internal batteries314 mm
    • Weight

      In air, no battery65.5 kg
      In water, no battery25.1 kg
      Battery10.0 kg (2 x 540 Wh), 5.8 kg (2 x 1800 Wh)

    • 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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