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VELOCIMETER

Vector - 4000 m

Investigate 3D velocity in the bottom boundary layer down to depths of 4000 m

Technical specification (PDF)
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Highlights

  • Small-scale turbulence
  • Sampling up to 64 Hz
  • Small sampling volume for measurements close to boundaries

Overview

  • The Vector is a high-accuracy single-point current meter that is capable of acquiring 3D velocity in a very small volume at rates up to 64 Hz. It is widely used for sediment transport applications, small-scale turbulence measurements and coastal engineering studies. It has an excellent track record of delivering outstanding data quality in a variety of applications. This titanium version of the Vector is suitable for investigating deep-water currents down to depths of 4000 m.

Applications

  • Studies of bottom boundary layers
  • Studies of deep-water currents
  • Ocean engineering projects
  • Low flow measurements
  • Flux measurements
  • Deep ocean mining support
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The Doppler Effect

    • Toggle all

    • Water velocity measurements

      Maximum profiling range N/A
      Distance from probe 0.15 m
      Sampling volume diameter 15 mm
      Sampling volume height (user-selectable) 5-20 mm
      Cell size N/A
      Velocity range ±0.01, 0.1, 0.3,1, 2, 4, 7 m/s (software-selectable)
      Adaptive ping interval N/A
      Accuracy ±0.5% of measured value ±1 mm/s
      Velocity precision typ. 1% of velocity range (at 16 Hz)
      Sampling rate (output) 1-64 Hz
      Internal sampling rate 100-250 Hz

    • Distance measurements

      Minimum range N/A
      Maximum range N/A
      Cell size N/A
      Accuracy N/A
      Sampling rate N/A

    • Echo intensity

      Acoustic frequency 6 MHz
      Resolution 0.45 dB
      Dynamic range 90 dB

    • Sensors

      Temperature: Thermistor embedded in end bell
      Temp. range -4 to +40 °C
      Temp. accuracy/resolution 0.1 °C/0.01 °C
      Temp. time response 10 min
      Compass: Magnetometer
      Accuracy/resolution 2º/0.1º for tilt < 20°
      Tilt: Liquid level
      Accuracy/resolution 0.2°/0.1°
      Maximum tilt 30°
      Up or Down Automatic detect
      Pressure: Piezoresistive
      Range 0-4000 m
      Accuracy/precision 0.5% FS / Better than 0.005% of full scale

    • Analog inputs

      No. of channels 2
      Supply voltage to analog output devices Three options selectable through firmware commands: 1) Battery voltage/500 mA, 2) +5 V/250 mA, 3) +12 V/100 mA

    • Data recording

      Capacity (standard): 9 MB, can add 4/16 GB
      Data record (Standard) 24 bytes at sampling rate + 28 bytes/second
      Data record (IMU) 72 bytes at sampling rate

    • Real-time clock

      Accuracy ±1 min/year
      Backup in absence of power 4 weeks

    • Data communications

      I/O RS-232 or RS-422
      Communication baud rate 300-115 200 Bd
      Recorder download baud rate 600/1200 kBd for both RS-232 and RS-422
      User control Handled via ”Vector” software, ActiveX® function calls, or direct commands.
      Analog outputs 3 channels standard, one for each velocity component or two velocities and pressure.
      Output range 0–5 V, scaling is user-selectable.
      Synchronization TTL (5 V tolerant) sync in/sync out, start on sync, sample on sync

    • Connectors

      Bulkhead (Impulse) MCBH-8-FS
      Cable PMCIL-8-MP on 10 m polyurethane cable

    • Software

      Functions Deployment planning, instrument configuration, data retrieval and conversion (for Windows®).

    • Multi unit operation

      Software N/A
      I/O N/A

    • Power

      DC input 9-15 V DC
      Maximum peak current 3 A
      Max. consumption 1.5 W at 64 Hz
      Typical consumption, 4 Hz 0.6 - 1 W
      Sleep consumption < 100 μA
      Transmit power 2 adjustable levels

    • Batteries

      Battery capacity 50 Wh (alkaline or Li-ion),165 Wh (lithium), single or dual
      New battery voltage 13.5 V DC (alkaline)
      Data collection capacity Refer to planning section in software

    • Environmental

      Operating temperature -4 to +40 °C
      Storage temperature -20 to +60 °C
      Shock and vibration IEC 721-3-2
      Depth rating 4000 m

    • Materials

      Standard model Titanium housing. Titanium probe and fasteners

    • Dimensions

      Maximum diameter 84 mm
      Maximum length 485 mm (housing only), 246 mm (fixed stem) add 110 mm for double battery

    • Weight

      Weight in air 8.3 kg
      Weight in water 5.1 kg

    • Options

      Probe mounted on fixed stem or on 2 m cable
      Vertical or horizontal probes
      Alkaline, lithium or Li-ion external batteries
      IMU - Inertial Measurement Unit

    • Toggle all

    • Technical drawings

      Vector 4000m Fixed Stem GA - NGA008-003 Rev.A

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      Vector 4000m Cable Probe, GA - NGA008-004 Rev.A

      Download this

    • Toggle all

    • Main product

      01

      Vector single point current meter, 4000m pressure rating

    • Probe type / Head

      01

      Standard probe on fixed stem, vertical instrument mounting (VEC)

      02

      Standard probe on fixed stem, horizontal instrument mounting (VEH)

      03

      Standard probe on 2m cable, vertical instrument mounting (VEC)

      04

      Standard probe on 2m cable, horizontal instrument mounting (VEH)

    • Housing

      01

      Standard housing for two batteries or one 100Wh package

      02

      Short housing for one battery

    • Memory

      01

      9 MB of memory on motherboard (M8)

      02

      4 GB SD card data logger

      03

      16 GB SD card data logger

    • Pressure sensors

      01

      0-10m pressure sensor

      02

      0-20m pressure sensor

      03

      0-30m pressure sensor

      04

      0-50m pressure sensor

      05

      0-100m pressure sensor

      06

      0-200m pressure sensor

      07

      0-4000m pressure sensor (4000m version only)

    • Cables

      01

      10m RS232 polyurethane cable with 8-pin inline connector and USB converter

      02

      20m RS232 polyurethane cable with 8-pin inline connector and USB converter

      03

      30m RS232 polyurethane cable with 8-pin inline connector and USB converter

      04

      40m RS232 polyurethane cable with 8-pin inline connector and USB converter

      05

      50m RS232 polyurethane cable with 8-pin inline connector and USB converter

      06

      10m RS422 polyurethane cable with 8-pin inline connector and USB converter

      07

      20m RS422 polyurethane cable with 8-pin inline connector and USB converter

      08

      30m RS422 polyurethane cable with 8-pin inline connector and USB converter

      09

      40m RS422 polyurethane cable with 8-pin inline connector and USB converter

      010

      50m RS422 polyurethane cable with 8-pin inline connector and USB converter

    • Other

      01

      With or without IMU

      02

      With or without compass and tilt

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