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SEAGUARD SEAGUARD® WLR - Water Level Recorder

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Overview

Overview

The Aanderaa SeaGuard WLR Water Level Recorder is a robust instrument based on the SeaGuard Platform. It is a self contained instrument for measuring tide and temperature. The instrument can be used as a platform for additional measurements (e.g. CTD, current, dissolved oxygen and turbidity). SeaGuard WLR comes in 300m, 3000m and 6000m depth ranges.

Product Features
  • High Resolution and low drift
  • Low maintenance needs
  • Selectable interval from 2 seconds to 2 hours
  • SeaGuard Studio visualization software
  • Smart sensor topology based on a reliable CANbus interface (AiCaP)
  • Output parameters: Pressure, Temperature, Tide pressure, Tide level.Pressure time series. The WLR also provides raw data of the pressure and temperature measurements.
  • Real-Time XML Output on RS-422(optional)
  • Windows CE based Datalogger with TFT colour touch panel for configuration
  • 7 pressure ranges:
    0 - 400 kPa / ~30m depth
    0 - 1000 kPa / ~90m depth
    0 - 4000 kPa / ~390m depth
    0 - 10MPa / ~1000m dept
    0 - 20MPa / ~2000m depth
    0 - 40MPa / ~4000m depth
    0 - 60MPa / ~6000m depth

SeaGuard Water Level Recorder measures hydrostatic pressure based on a silicon pressure sensor 5217. The pressure measurements are sampled and temperature compensated by an advanced Digital Signal Processor.

The SeaGuard WLR application areas are in fixed installations, either deployed in a seabed installation in shallow waters, or mounted onto a fixed structure in the upper water column. Typical applications for the sensor are measurements of tide in ports and harbours, marine operations, hydrography, weather forecast, and climate studies.

The tide measurement is an average of the hydrostatic pressure measured over a time period of 10 seconds to 8 minutes (Integration time configurable by the user).The update interval is between 2 seconds and 2 hours.

The SeaGuard WLR output parameters are tide pressure, tide level, pressure and temperature. Tide levels are preliminary internally calculated estimates, based on fixed user selectable values of atmospheric pressure and water salinity. Compensation for actual atmospheric pressure and salinity can be postprosessed if such data is available. Tide pressure is an average of hydrostatic pressure over the integration time.

Optional Sensors:

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