Tide & Wave Instruments
Submersible Tide & Wave Recorder TWR-2050
Submersible Tide and Wave Recorder TWR-2050P
RBR's submersible tide and wave logger, the TWR-2050P, is a self-contained logger, designed for unattended measurement of tides and waves. Tidal averaging time is user-selectable to remove the effect of wave activity. Wave measurements are taken as bursts with rates that can be 1, 2, or 4Hz. Wave sampling is achieved by taking 512, 1024, 2048 or 4096 samples at the selected burst rate. The TWR-2050P can be configured to trigger burst data collection at fixed times. Software is provided to analyze the wave data to reveal the wave characteristics like significant wave height and period, and more.
The RBR Tide and Wave recorder is very accurate and small (265mm x 38mm OD), and can be mounted on the sea or harbour floor, fastened to an existing structure, or attached to a mooring line.
The temperature channel of the TWR-2050P is calibrated to an accuracy of ±0.002°C (ITS-90), with typical annual drift of better than 0.002°C/year. The depth channel is calibrated to an accuracy of 0.05%fs. Calibration constants are stored in the logger and recalibration is possible by the end-user.
The TWR-2050HT is an atmospheric pressure compensated tide gauge.
| Datasheet | |
| Data Logger User Manual | |
| Performance of a new submersible tide and wave recorder |
The Ruskin software package has a straight-forward logger set up display menu, which includes synchronizing the logger to the PC clock, setting the sampling period, setting the averaging burst length, and start and stop logging date selection by means of a graphical calendar. Data can also be saved to a .mat file for import into Matlab® for further analysis and display.
Ruskin is designed to give an indication of:
- Sample rate Tide burst duration
- Tide cycle time Wave burst duration
- Wave cycle time
- Spectral resolution
Analysis of Waves and Wave Spectra:
- Mean level
- Tidal slope
- Significant wave height (Hs)
- Min and max elevation from mean
- Mean period
- Mean zero crossing period Peak period
- Significant wave period
- Total energy

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