Water level & Wave Measurement

LOG_aLevel – Water Level Gauge

LOG_aLevel is a remote sensing, stand-alone Water Level Gauge (Tide Gauge). The system can work with ultrasound, radar or pressure sensors. It is extremely robust & reliable and is used for precise measurements of all kinds of water levels and wave dynamics (up to steep waves).

The system can be easily extended to include a datalogger, data communication systems and additional hydrological and meteorological system to form a complete monitoring station. Furthermore, multiple LOG_aLevel stations can be interconnected to form a network. Integration in SCADA systems is straightforward.

  • For a Mobile tide gauge please see: LOG_aLevel Mobile
  • For tide gauges for Offshore Platforms please see: LOG_aLevel Long Range

  • Talk to us for your need in Wave Direction Measurements. We can provide systems for inland, coastal, offshore and laboratory applications!

    • Advantages

      • Easy to install
      • Cost effective
      • Extremely Robust & reliable
      • Calibration-Free
      • Maximum Accuracy at all times
      • Maintenance-Free (no moving parts, remote sensing)
      • Reliable under Extreme Conditions: Flood, Ice, Storms, Debris, etc.
      • Narrow Ultrasound Beam for Accurate Level even at Wavy Water Surface
      • Simultaneous Wave and Level Measurement
      • Extension With Additional Sensors (Redundancy, Meteorology and Hydrology)
      • Remote Data Transmission, Control and Alerting
      • Easy Integration to Measuring Networks
      • Reduced risk of malfunction in case of flood and ice (no frozen level gauges!)
      • Fast measurements (measurement of steep waves is possible)
      • Remote sensing without influence to water surface

    • High-performance water level gauge.


      • Continuous speed of sound measurement with Reference sensor REF-300 ensures an always accurate, calibration-free system (applies to systems with ultrasound sensors)
      • Housing: 300x400x200mm or 500x500x200mm stainless steel with lock, seawater resistant IP class up to 67
      • Mounting of Sensors: Seawater resistant pole (stainless steel) with mounting plate
      • LOG_aLevel Windows Software for system set-up, analysis of measuring network, visualization, managing, storing and exporting of data
    • Specifications

      Measuring range: depends on sensor technology (Ultrasound, Radar, Pressure)
      Sample rates: up to 5 Hz
      Resolution: 1 mm
      Accuracy: 1 cm
      Power supply: 12 VDC ( 230/110V AC optional)
      Data output: RS232 or RS485
      Working temp: -20°C up to +70°C
    • Options

      • Ultrasound, Radar and Pressure Sensors (see table below for details)
      • Power autonomy: Backup battery up to 200 Ah, Solar Power, Wind Power
      • Data logger with SD memory card (4GB / 8GB)
      • Data transmission: Radio, GPRS, Satellite, Cloud, AIS, AIS AtoN
      • Integration of any desired Hydrological and Meteorological Sensors (also in data stream, visualization and logging)
      • Example Hydrological sensors: Water temperature, Inductive current meter, ADCP, Surface Current Flow, CTD, Salinity, Conductivity, Dissolved Oxygen, etc.
      • Example Meteorological sensors:  Wind gauge, Air temperature, Humidity, Rain, Ice, Solar Radiation, Barometric Pressure, Cloud Height, Visibility, complete Weather Stations and sensors for Helidecks, etc.
      • Time: High accuracy GPS – date and time (pps, 1ms accuracy)
      • Data Server / Database
      • Website
      • Alerting / Early Warning System
      • Tide Analysis and Prediction (please see TidePrediction Software)
      • Hypack – Export or Data Stream
         Measurement Range:
        Ultrasound Sensor Maximum distance from Sensor to Water: 10 meters (for larger ranges please see LOG_aLevel Long Range)
        Radar Sensor Maximum distance from Sensor to Water: 10 meters (for larger ranges please see LOG_aLevel Long Range)
        Pressure Sensor: Maximum depth: 50 meters
    • Applications

      • Water level and tide monitoring
      • Coastal protection
      • Harbor and Terminal Management
      • Storm Tide, Flood and Tsunami Measuring Networks
      • Hydrology and Environmental Monitoring
      • (Temporary) Level Gauge to Support Dredging, Surveying and Construction Works
      • Spectral Wave Energy Analysis for Optimal Survey Quality
      • Water/Fluids Reservoir Management
      • Wave Monitoring and Analysis
      • Ship Induced Waves
      • Load Determination for Hydraulic Engineering
      • Torrent Monitoring
      • Local Event Alerting e.g. Flood, Tsunami
      • Real-Time Data for Vessels through AIS/AtoN
      • Local Tide Analysis and Prediction System together with Tidepredictor Software
      • Wave Measurements from Jack-Ups and Rigs
      • Server-based Fleet Management Networks incl. Web Portal (e.g.Ferries, Water-Planes, Supply Vessels)
      • Discharge Hydrographs
      • Flood warning