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Kongsberg Maritime MRU 3

Operating vessels at sea is, by its very nature, a highly challenging activity. In order to undertake tasks such as wave height monitoring, using cranes during rough weather, or determining where vessels are using dynamic positioning, roll, pitch, ya

  • Kongsberg Maritime MRU 3
Kongsberg Maritime
Strandpromenaden 50
3191 Horten
Norway
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Description

Operating vessels at sea is, by its very nature, a highly challenging activity. In order to undertake tasks such as wave height monitoring, using cranes during rough weather, or determining where vessels are using dynamic positioning, roll, pitch, yaw and heave motion needs to be measured. This is where Motion Reference Units (MRUs) come in and Kongsberg has been a leader in this field for over 20 years.

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]
    5.5
  • 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
    Connector must be pointing up or down.
  • Roll and pitch measurement
    Y
  • Angle accuracy static in ° [RMS]
    0.08
  • Angle accuracy dynamic in ° [RMS]
    0.08
  • Resolution angle [°]
    0.001
  • Angular roll/pitch range [°]
    45
  • Angular rate range [°/s]
    100
  • Max. output heave range [m]
    50
  • Output period real time [s]
    0
  • Heave accuracy real time [%]
    5
  • Heave accuracy delayed [%]
    5
  • Acceleration measurement
    Y
  • Acceleration range m/s2
    50
  • Acceleration noise m/s2 RMS
    0.005
  • Acceleration accuracy m/s2 RMS
    0.02
  • Ethernet port
    Y
  • RS232 output
    Y
  • RS422 output
    Y
  • Other output ports
    Three output and one input: 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 3 outputs roll, pitch and heave together with linear acceleration in 3-axes. The MRU 3 outputs heave position and velocity. In addition roll and pitch angles and corresponding angular rate vectors are output.
  • Velocity input data and formats
    The MRU 3 outputs roll, pitch and heave together with linear acceleration in 3-axes. The MRU 3 outputs heave position and velocity. In addition roll and pitch angles and corresponding angular rate vectors are output.
  • Heading input data and formats
    The MRU 3 accepts input of external speed and heading information on separate serial lines or Ethernet for improved accuracy in heave, roll and pitch during turns and accelerations. For time synchronization the MRU accepts 1-second time pulse (1PPS) input on a TTL line (XIN) or as RS-232/422 signal.

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