Additional information
KeywordsCoastal monitoring, Data buoy, Metocean
ManufacturerDatawell BV
ParameterCurrents, Waves

DWR4 Waverider Buoy

Industry gold-standard directional wave measurement buoy. Now featuring the option for acoustic current meters for the measurements of surface currents.

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DWR4 Wave measurements: same sensor, new data processing

The wave sensor of the Directional Waverider equipped with Acoustic Current Meters (DWR4 ACM) is identical to the sensor in the well known MkI, II and III. Processing of the measured data is now performed at the doubled sample frequency of 2.56 Hz. The high frequency limit of the heave and direction signals is shifted from 0.58 to 1.0 Hz. With this choice, the high frequency limit of the wave buoy is determined by the hydrodynamic response of the hull, not by the onboard instrumentation.

In addition, the DWR4 transmission protocol allows for a superior heave and horizontal displacement resolution. Easy comparison of the new DWR4 output to the familiar DWR-MkIII results is facilitated in the accompanying waves software suite, as well as WaveView Connect Software integration.

Operational Improvements

Extra features of the DWR4 compared to the DWR-MkIII to facilitate operation are:

  • Tagged electronic ID-numbers for hull & hatch cover, which are transmitted along with measured data.
  • Health check parameters including temperature monitoring of Hippy-40 sensor & hatch cover electronics measurement.
  • Measurement of energy used from the batteries & supplied by the optional solar panel for improved energy management.
  • Hatch over power switch included as standard.

An operational difference between the DWR-MkIII and the DWR4 is the criterion for activation of the flashlight. This has changed from light detection to a sunset/sunrise algorithm based on the GPS position and time.

Additional information
KeywordsCoastal monitoring, Data buoy, Metocean
ManufacturerDatawell BV
ParameterCurrents, Waves

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