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Kongsberg Maritime MRU 2

The MRU 2 is typically used for roll and pitch measurements in offshore riser monitoring systems, dynamic positioning systems, telecommunication antenna compensation systems and motion damping systems on high speed crafts.

The MRU 2 incorporates t

  • Kongsberg Maritime MRU 2
Kongsberg Maritime
Strandpromenaden 50
3191 Horten
Norway
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Description

The MRU 2 is typically used for roll and pitch measurements in offshore riser monitoring systems, dynamic positioning systems, telecommunication antenna compensation systems and motion damping systems on high speed crafts. The MRU 2 incorporates two highly accurate accelerometers and two Micro-Electro-Mechanical-Structures (MEMS) angular rate gyros. This unit achieves high reliability by using solid state sensors with no rotational or mechanical wear-out parts

Specifications

  • Height [m]
    0.14
  • Width[m]
    0.105
  • Length[m]
    0.105
  • Weight[kg]
    2.4
  • Material
    Anodised aluminium
  • Min. Voltage (DC)
    10
  • Max. Voltage (DC)
    36
  • Power consumption [W]
    4.9
  • Max. operating temperature [°C]
    55
  • Splashproof casting
    Y
  • Water resistant casting
    N
  • Vibration and operating shock tolerance
    IEC 60945/EN 60945
  • Electromagnetic compatibility
    IEC 60945/EN 60945
  • Mounting orientation
    In a fixed direction relative to the ship
  • Roll and pitch measurement
    Y
  • Angle accuracy static in ° [RMS]
    0.08
  • Angle accuracy dynamic in ° [RMS]
    0.1
  • Resolution angle [°]
    0.001
  • Angular rate range [°/s]
    100
  • Acceleration measurement
    Y
  • Acceleration range m/s2
    30
  • Acceleration noise m/s2 RMS
    0.002
  • Acceleration accuracy m/s2 RMS
    0.01
  • Ethernet port
    Y
  • RS232 output
    Y
  • RS422 output
    Y
  • Other output ports
    Bidirectional RS-422 from junction box, user configurable RS-232, RS-422
  • Data output rate
    200 Hz, Ethernet UDP/IP 10/100 Mbps
  • Data output protocols/formats
    The MRU 2 outputs static and dynamic roll and pitch angles and corresponding angular rate vectors. The unit outputs surge and sway accelerations. The status of the MRU 2 is available online. For this fifth generation MRU data is available through an Ethernet interface and serial lines enable easy distribution of MRU data to multiple users on board the vessel. Output data are available on two individually configurable serial lines and Ethernet/UDP. Output variables are transmitted as IEEE 32-bit floats (recommended) or as scaled integers. In addition, ASCII-based NMEA 0183 proprietary sentences can be selected as data output protocols.

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