Wärtsilä ELAC HydroStar 4900

Wärtsilä ELAC HydroStar 4900 is a high-precision modular survey single-beam echo sounder for hydrographic and commercial survey vessels. Data are presented on a high-resolution colour monitor as echogram and by numerical values. Due to its digital signal processing, Wärtsilä ELAC HydroStar 4900 allows exact bottom detection.

    Key Features
    • Frequency range between 12 to 1,000 kHz
    • Controlled from the central electronic unit
    • Integrated test system (BITE) and software-guided failure analysis
    • Internal data storage
    Technical Data
    Technical Data
    Frequency range 12 - 1,000 kHz
    Max. standard scale settings 0 - 1,000 / - 3,000 / - 6,000 / - 10,000 m
    Units Metres, fathoms, feet selectable
    Gain control TVG* and AGC* for depth finding or manual control
    Measuring accuracy Better than ± 0.25 % of scale end value
    Minimum sounding depth below transducer < 0.3 m
    Draft correction 0 - 30 m, in steps of 0.01 m
    Sound velocity 1,400 - 1,650 m/s (manually) or in steps of 1 / 0.1 m/s (automatically)
    Transmitting power Max. 2,000 W RMS* (depending on transducer)
    Pulse length Switches automatically to suit selected range
    Depth resolution Up to 2.5 cm (depending on the range)
    * TVG – Time Variable Gain  I  AGC – Automatic Gain Control  I  RMS – Root Mean Square

    Transducer Type Frequency [kHz] Max. Range Setting [m]
    LSE 179 12 10
    LEG 40 12.5 6
    LSE 131 30 3
    LSE 136 50 1
    LSE 297 50 1
    LSE 148 100 1
    LSE 313 200 500
    LSE 141 400 250
    LSE 184 1 100





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