VESSEL MOUNTED

11/10/2024

VM Operations - 333 kHz

Le package Signature VM fournit les capacités d'un AD2CP monté sur coque

The Signature VM Coastal safeguards data quality, opens up new and unprecedented opportunities to thescientific community, and offers operational convenience and reduced complexity.
The Signature VM Coastal package includes the Signature1000, 500 or 250, allowing for great versatility in boththe vessel-mounted and bottom-mounted configurations. By using a state-of-the-art and user-friendly vesselmounted package, measurement errors and initial installation time can be greatly reduced.

Highlights
A coherent system that is quick andconvenient to operate
Fifth echosounder beam for sedimentmeasurements down to the bottom

Applications
Coastal surveys, up to 200 m depthPort and harbor mapping
Studies of tidal currents(1000/500)

Sediment transport studies

Ethernet ADCP and GNSS hardware, offering

Large-scale mixing studies

tight network timing
Simultaneous current and depth informationin one place (1000/500)
Outstanding bottom-track performance,even under challenging conditions
Straightforward data-acquisition andprocessing software

Technical specifications
Water velocity measurements
Profiling range*

100 m

Cell size

1–6 m

Max no. cells

128

Min. blanking

0.5 m

Minimum accuracy

0.3% of the measured value

Velocity resolution

0.1 cm/s

Maximum sampling rate

2 Hz

No. of beams

4 slanted at 25 degrees*) Maximum range depends on acoustic scattering conditions and transmit power.

Bottom velocity measurements
Single ping std @ 3 m/s

0.5 cm/s

Long-term accuracy (1)± 0.3%

Minimum altitude

0.3 m

Maximum altitude (2)150 m

Velocity resolution

0.01 mm/s

Maximum sampling rate

2 Hz(1) Following standard callibration procedures(2) Bottom-track distance dependent upon bottom type

Other, Vessel Mounted ADCP
Temperature sensor range / accuracy-4 °C to 40 °C / 0.1 °C

Pressure

Piezoresistive

Compass

Solid State magnetometer

Tilt

Solid State accelerometer

AHRS

Attitude sensor (option)

IO

Ethernet (DF21 over serial as option)

DC Input

24 V DC

Operating temperature

0 °C to 40 °C

Storage temperature-20 °C to 60 °C

Depth rating

Bottom track is limited to surface vessels

Mechanical
Instrument materials

POM with Titanium fastener

Instrument weight

7 kg

Installation

Instrument to be flush mounted with hull (sea valve solution)

Sea valve (option)

DNV type approval; TAS00002CU

Sea valve material

Ductile Iron (body), Bronze (seat)Sea valve weight

85 kg

MechanicalBell housing material

Steel DIN17121

Bell housing weight

29 kg

Processing unit
Processor/memory

Intel i5/8 GB

Hard disk

SSD, 256 GB

Operating system

Windows® 10

Housing

19" rack-mountable 2 HE

Dimensions

482x87x400 mm

Input

110-240 V AC, 100 W Max

Total weight

7 kg

Connections*Power, Signature ADCP, 2x DisplayPort, 1x LAN, 2x USB, 4x
RS232|RS422|RS485 configurable port**) Processing unit requires heading and GNSS input over Serial or Ethernet

Nortek Signature VM acquisition softwareAcquisition input

Signature VM - binary

Configuration

Signature VM ADCP, Alignment offsets, Outputs

Display

Vessel track in map, Bottom-track magnitude, direction anddepth: (SOG), (COG), Speed Through Water (STW), Meanwater column magnitude and direction, 4x depth selectablelayer (magnitude and direction), 3D velocity profile(magnitude and direction), 2D vessel cross track current, 24hmean current and direction history (tides), Notes, Echocorrelation, Echo amplitude

StatusSignature VM BT and VB + NMEA GGA, HDT, VTG

Online output

NMEA data formats or binary AD2CP with embedded NMEA.
DF21 BT proprietary (optional)

Post processing

Signature review software (optional)

Multi vessel display

VM Operations streaming data and display (optional)*Please note that the package includes the VM Operations acquisition software. The post-processing Review
software is optional.