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Nortek Signature VM Coastal - 1000|500|250 kHz ADCP

Field-proven vessel-mounted ADCPs for commercial and scientific applications.

Nortek’s vessel-mounted ADCP current survey package – called Signature VM – opens up new and unprecedented opportunities to the community, while offering operational convenience and reduced complexity. Data quality can be safeguarded, and both errors and initial installation time can be substantially reduced by using an integrated system where each is module is pre-qualified.

  • Nortek Signature VM Coastal - 1000|500|250 kHz ADCP
Nortek
Vangkroken 2
1351 Rud
Norway
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Description

The Signature VM Coastal safeguards data quality, opens up new and unprecedented opportunities to the scientific community, and offers operational convenience and reduced complexity.

The Signature VM Coastal package includes the Signature1000, 500 or 250, allowing for great versatility in both the vessel-mounted and bottom-mounted configurations. By using a state-of-the-art and user-friendly vessel-mounted package, measurement errors and initial installation time can be greatly reduced.

Applications

  • Coastal surveys, up to 200 m depth
  • Port and harbor mapping
  • Studies of tidal currents
  • Sediment transport studies
  • Large-scale mixing studies

 

Signature VM Coastal - 1000kHz

Fast pinging AD2CP for current measurements and high-resolution echograms in shallow water [30m]

 

Overview

The Signature VM Coastal 1000 kHz is an optimal instrument for smaller navigational rivers, estuaries and shallow coastal zones. The 16Hz ping rate permit concurrent measurements of current, depth, bottom track and water column echograms.

Echograms are measured with cm resolution down to the bottom, a common area with high suspended sediment load and where a standard VM-ADCP is not able to measure.

Obtaining data from a compact vessel or USV in a river or near shore environments can be challenging due to sudden accelerations, course changes or wave induced motion. The true heading GNSS time server and the optional AHRS accommodate to extend the operational limit.

Coastal or river surveys are mostly transient installations. The compact VM-ADCP is convenient to be used on each vessel or USV. By using a state-of-the-art and user-friendly vessel-mounted package, measurement errors and initial installation time can be greatly reduced.

Highlights

  • A coherent system that is quick and convenient to operate
  • Fifth echosounder beam for sediment measurements down to the bottom
  • Simultaneous current and depth information in one place
  • High (16Hz) ping rate for profiling from smaller dynamic platforms and turbulent environments
  • Ethernet ADCP and GNSS timeserver, offering tight network timing
  • Optional AHRS for improved tilt compensation in dynamic environments
  • Outstanding bottom-track performance [30m]

Applications

  • Medium size USV's and manned vessels
  • Navigational rivers, estuaries and coastal surveys, up to 30 m depth
  • Current or turbulence studies
  • Sediment transport studies
  • Biomass studies
  • River discharge studies using Qrev
  • Studies of tidal currents
  • Condition monitoring

 

Signature VM Coastal - 500kHz

Fast pinging AD2CP for current measurements and high-resolution echograms in the littoral zone [70m]

 

Overview

The Signature VM Coastal 500 kHz is the right instrument for the larger navigational rivers up to coastal surveys. The 8Hz ping rate permits concurrent current measurements, depth, bottom track and water column echograms.

Echograms are measured with cm resolution down to the bottom, a common area with high loads of suspended sediment and where a standard VM-ADCP can't measure.

Obtaining data from compact vessels in large rivers or coastal environments can be challenging because of sudden accelerations, course changes or wave induced motion. The true heading GNSS time server and the optional AHRS can widen the operational limits.

The 70m bottom track range safeguards a proper velocity correction even in difficult conditions.

Coastal or river surveys are often transient installations. By using a state-of-the-art and user-friendly vessel-mounted package, measurement errors and initial installation time can be greatly reduced.

Highlights

  • A coherent system that is quick and convenient to operate
  • Fifth echosounder beam for suspended sediment measurement down to the bottom
  • Simultaneous current and depth information in one place
  • High 8Hz ping rate for profiling from medium size platforms or turbulent environments
  • Ethernet ADCP and GNSS timeserver, offering tight network timing
  • Optional AHRS for improved tilt compensation in dynamic environments
  • Outstanding bottom-track performance, even in challenging conditions [70m]

Applications

  • Large navigational rivers, estuaries and coastal surveys, up to 70 m depth
  • USV's intended for estuaries or coastal environments
  • Medium-sized inshore or coastal operating manned vessels
  • Current or turbulence studies
  • Sediment transport studies
  • Biomass studies
  • River discharge studies using Qrev
  • Studies of tidal currents
  • Condition monitoring

 

Signature VM Coastal - 250kHz

Fast pinging AD2CP with range for vessels operating on the continental shelf [200m]

 

Overview

The Signature VM Coastal 250 kHz grants precision, a high ping rate and range for those who want to cover the continental shelf.

By using a state-of-the-art and user-friendly vessel-mounted package, measurement errors and initial installation time can be greatly reduced.

Coastal seas can be a challenging environment to work in. Besides the true heading GNSS time server, the optional AHRS can widen the operational limits. The 200m bottom track range safeguards a proper velocity correction even in difficult conditions.

Highlights

  • A coherent system that is quick and convenient to operate
  • 3Hz ping rate for profiling from coastal vessel and environments
  • Ethernet ADCP and true heading GNSS timeserver, offering tight network timing
  • Optional AHRS for improved tilt compensation in dynamic environments
  • Outstanding bottom-track performance, even in difficult conditions [205m]
  • Optional 5th beam for current and wave measurements in stand-alone mode
  • Increased pingrate & range, yet delivering the same accuracy alike slight higher frequency instrumentation on the market

Applications

  • Large size offshore USV's and manned vessels
  • Estuaries and deep coastal surveys, up to 200 m depth
  • Current or turbulence studies
  • Sediment transport studies
  • River discharge studies using Qrev
  • Studies of tidal currents
  • Condition monitoring

 

Learn more about Nortek Signature VM Coastal here.

Specifications

  • Max. operating depth [m]
    300
  • True Bottom Tracking Capability
    Y
  • Year of last update
    2021
  • Length [m]
    0.23
  • Width [m]
    0.23
  • Height [m]
    0.22
  • Weight in air [kg]
    4.5
  • Weight in water [kg]
    1
  • Min. operating power [V]
    15
  • Max. operating power [V]
    48
  • Max. battery lifetime [days]
    365
  • Max. speed of boat [km]
    43
  • Max. range to bottom [m]
    205
  • Processor/memory
    i5 processor/8 GB
  • Hard disk
    500 GB SSD
  • Operating System
    Windows 10
  • Housing Material
    Non-corrosive
  • Dimensions
    265x110x340mm
  • PC Input
    24 VDC, 20W typical
  • Connections
    Power, Signature ADCP, AN GNSS, 2 x HDMI, 2 x LAN,3 x USB, 2 x USB-C, 1 x RS232 (optional)
  • Operator control
    Remote desktop or keyboard mouse
  • Total Weight [kg]
    5,75
  • Max. typical profiling range [m]
    30/70/200
  • Number of beams
    4 5
  • Nadir angle [deg]
    25
  • Max. Number of cells per beam
    256
  • Min. blanking distance [m]
    0.2
  • Max. ping rate [Hz]
    16
  • Min. cell size [m]
    0.2
  • Max. cell size [m]
    8
  • Speed dependent uncertainty: horizontal [%]
    0.3
  • Speed independent uncertainty: horizontal [cm/s]
    0.3
  • Center working frequency [kHz]
    1000/500/250
  • Lost data at far boundary [%]
    10
  • Cell overlap [%]
    25
  • Max. velocity [m/s]
    11.8
  • Speed dependent uncertainty: vertical [%]
    0.1
  • Speed independent uncertainty: vertical [cm/s]
    0.1
  • Surface reference capability
    Y
  • Surface current measurement
    Y
  • Compensation for sound speed
    Y
  • Single ping rejection of outliers
    Y
  • Maximum sampling rate for Water velocity measurements
    15 Hz
  • Maximum sampling rate for Bottom velocity measurements
    8 Hz
  • Maximum sampling rate for Depth measurements
    4 Hz
  • No. of beams for Depth measurements
    5
  • Single ping std
    1 cm
  • Minimum altitude
    0,2 m
  • Maximum altitude
    205 m
  • Echo intensity Sampling
    Yes
  • Echo intensity Resolution
    0,5 dB
  • Echo intensity Dynamic range
    70 dB
  • Echo intensity No. of beams
    5
  • Echo intensity Beam width
    2,9 degrees
  • Velocity resolution of Bottom velocity measurements
    0,01 mm/s
  • Velocity resolution of Water velocity measurements
    0,1 cm/s
  • Velocity resolution of Depth measurements
    0,001 m
  • Storage temperature
    -20 degrees C to 60 degrees C
  • Standard range
    -4 degrees C to degrees 36 C
  • Pressure
    300 m (please inquire for options)
  • Accuracy/precision
    0,1% FS / Better than 0,002% of full scale
  • Compass and tilt
    Yes, please inquire for optional AHRS
  • Data recording
    16 GB, please inquire for options
  • Data cable
    10m, please inquire for options
  • IO
    Ethernet
  • DC Input
    24 V DC or 120/230 VAC
  • Shock and vibration
    IEC60068-2-64
  • EMC approval
    IEC/EN 61000-6-2, 61000-6-3
  • Depth rating
    300m, please inquire for options
  • Connectors
    Straight fitted MCBH6F and MCBH8F
  • Housing
    300m rated
  • Material
    POM
  • Uncertainty of single ping horizontal velocity for default cell size [cm/sec]
    4.71
  • Uncertainty of single ping vertical velocity for default cell size [cm/sec]
    1.55
  • Minimum accuracy
    0.5 cm/s
  • Long-term accuracy
    Better than 0.5 cm/s
  • Temperature: min [°C]
    -4
  • Temperature: max. [°C]
    40
  • Temperature: uncertainty [°C]
    0.1
  • Compass type
    Solid State
  • Tilt: max. [deg]
    90
  • Tilt: uncertainty [deg]
    0.2
  • Moving vessel
    Y
  • Bottom mount
    Y
  • Inline string mooring
    Y
  • Data Buoy
    Y
  • Marine structures
    Y
  • Conductivity
    N
  • Oxygen
    N
  • Turbidity
    N
  • Tides
    Y
  • Waves
    Y
  • Pressure
    Y
  • Acoustic modem
    Y
  • Relocation of transponder
    N
  • Wave direction
    Y
  • Speed of sound
    Y
  • Real-time interfacing
    Ethernet and serial
  • Min. external power [Voltage]
    24
  • Max. external power [Voltage]
    48
  • Max. cable length [m]
    1000
  • Baudrate [kbit/s]
    20000
  • External battery container
    Y
  • Data acquisition software and processing software
    Signature VM, Ocean Contour
  • Typical applications
    Vessel mounted coastal surveys, stand-alone use
  • Acquisition
    Signature VM
  • Timing
    PTP
  • Configuration
    Signature VM, Signature Deployment
  • Display
    Vessel track in map, Bottom-track velocity, Velocity magnitude and direction, Echo amplitude, Echo correlation, Vertical echogram; corrected relative volume
  • Status
    GNSS and ADCP status displayed in Signature VM software
  • Output data
    Binary AD2CP, NMEA data strings online (velocity, BT and depth) CSV, ASCII VMT, Qrev VMT, KML offline
  • Brand and model
    Advanced Navigation, GNSS Compass Aries G2
  • Position accuracy (with dGNSS) / postprocessed
    1,0m / 0,015m
  • Heading accuracy / post-processed
    0,2 degrees
  • Supported navigation systems
    Advanced Navigation GNSS Compass Aries G2
  • Protocol
    AN packet protocol
  • Communication
    Ethernet
  • Timing
    PTP

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