Vectrino

A new generation 3D water velocity sensor!

The Vectrino is a high-resolution acoustic velocimeter used to measure 3D water velocity in a wide variety of applications from the laboratory to the ocean. The instrument is simple to use and the performance compares favorably with laser Doppler systems costing many times more. The basis measurement technology is coherent Doppler processing, which is characterized by accurate data with no appreciable zero offset. The standard Vectrino allows data collection rates up to 25 Hz, and with the optional Vectrino+ firmware a collection rate of 200 Hz can be achieved.

What Is New?
The Vectrino is based on the same principles as the Nortek NDV, but with a leap forward in performance:
  • Minimized size of the electronics to fit inside the base instrument.
  • Reduced probe size minimizes the flow interference from the probe onto the sampling volume.
  • The addition of a fourth receiver improves turbulence measurements.
  • Increased internal sampling rate reduces measurement noise.
  • Increased maximum velocity range.
  • Probe configuration file stored on probe board simplifies a change of probes.
  • Integrated temperature sensor in the probe.
  • Parallelized receiver increases the number of samples by four (Vectrino+ firmware only).

System
  • Acoustic frequency: 10 MHz Velocity
  • Velocity range: ±0.01, 0.1, 0.3, 1, 2, 4m/s (user selectable)
  • Velocity accuracy: ±0.5% of measured value ±1mm/s
  • Sampling Rate: 1-25Hz, 1-200Hz (Vectrino+ firmware)
Sampling Volume
  • Distance from probe: 0.05m
  • Diameter: 6mm
  • Height (user selectable): 3-15mm
Data Communication
  • I/O: RS232. The software supports most commercially available USB-RS232 converters
  • Baud rate: 300-115200
  • Analog outputs:3 channels standard, one for each velocity component.
  • Synchronization: SynchIn and SynchOut
Other
  • Input Power: 12-48VDC
  • Peak current: 2.5A at 12VDC (user selectable)
  • Max consumption at 200Hz: 1.5W
  • Operating temperature: - 5° to 45° C
  • Storage temperature: -15° to 60° C
Options
  • Standard or Vectrino+ firmware (upgrade to Vectrino+ firmware is also available as retrofit)
  • 4-beam down-looking probe on 40.cm stem or 4-beam probe on 1-m cable.
  • 12-pin IP68 waterproof (1h at 20m) or Impulse 12-pin underwater connector
  • 10, 20, 30 or 50m cable with choice of IP68 or Impulse underwater connector
  • RS232-USB converter (one-to-one, four-to-one or eight-to-one)
  • Combined transportation and storage case

The Vectrino velocimeter operating principle. A pulse is transmitted from the centre transducer, and the doppler shift introduced by the reflections from particles suspended in the water, is picked up by the 4 receivers.

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