SEAGUARD® WLR Water Level Recorder The new AADI SEAGUARD® WLR 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). Features of the SEAGUARD® WLR: • 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. The WLR also provides raw data of the Pressure and Temperature measurements. • Real-Time XML Output on RS-422(optional) • For use in sea and fresh water • Windows CE based datalogger with TFT colour touch panel for configuration • 3 Pressure ranges: 0 - 400 kPa / ~30m depth 0 - 700 kPa / ~60m depth 0 - 3100 kPa / ~300m depth SEAGUARD® Water Level Recorder measures hydrostatic pressure based on a silicon pressure sensor 4647. 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 Harbors, 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. AADI is a trademark of Xylem Inc. or one of its subsidiaries. Since all calibration and temperature compensation data are stored inside the sensor, the parameters are by default presented directly in engineering units without any external calculation. The WLR also provides raw data of the pressure and the temperature measurements. The output parameters from the SEAGUARD® WLR are easily presented in SEAGUARD Studio. The SEAGUARD® WLR and the AADI smart sensors are interfaced by means of a reliable CANbus protocol (AiCaP) using XML for plug and play capabilities. The smart sensors can be mounted directly on the top end-plate or connected via cable to an AADI SEAGUARD® and are automatically detected and recognized. The SEAGUARD® WLR can be used with AADI Real-Time Collector for Real-Time data. The SEAGUARD® WLR has 2 battery compartments for long deployment time. The SEAGUARD® WLR can be equipped with a Conductivity sensor for calculation of Salinity, Density and Sound of speed.

Top-End Plate: Recording system: Storage Capacity: Battery: Alkaline 3988 Multiparameter platform Data Storage on SD card ≤ 4GB 2 batteries inside the instrument 9V, 15Ah (nominal 12.5Ah; 20W) down to 6V at 4°C) or Lithium 3908: 7V, 35Ah Supply voltage: 6 to 14Vdc Operating temperature: -5 – +40˚C (23 – 104˚F) Deployment depth: Up to 300 m depending on sensor (see sensor specification) Dimensions: OD: 139mm H: 356mm Weight in air: 6.0kg Weight in water: 1.5kg Materials: PET, Titanium, Stainless Steel 316, Epoxy Average current drain(@ 9V): Tidal average period of 40s Note! The instrument will...