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MRU 5

The MRU 5 is the ideal sensor for motion compensation of multi-beam echo sounders, offshore cranes, hydroacoustic positioning systems and dynamic motion monitoring of roll, pitch and linear accelerations on offshore structures. The MRU 5 incorporates

Kongsberg Maritime
Strandpromenaden 50
3191 Horten
Norway
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Description

The MRU 5 is the ideal sensor for motion compensation of multi-beam echo sounders, offshore cranes, hydroacoustic positioning systems and dynamic motion monitoring of roll, pitch and linear accelerations on offshore structures. The MRU 5 incorporates three highly accurate accelerometers and three high-end Kongsberg Seatex developed Micro-Electro-Mechanical-Structures (MEMS) gyros of type MRG (MRU Rate Gyro). The MRG gyro combines low noise, excellent bias stability and gain accuracy. Very high reliability is achieved by using solid state sensors with no rotational or mechanical wearout parts.

Specifications

  • Height [m]
    0.014
  • Width[m]
    0.0105
  • Length[m]
    0.0105
  • Weight[kg]
    2.4
  • Material
    Anodised Aluminium
  • Min. Voltage (DC)
    10
  • Max. Voltage (DC)
    36
  • Power consumption [W]
    12
  • Min. operating temperature [°C]
    -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
    No limitation to mounting orientation
  • Roll and pitch measurement
    Y
  • Angle accuracy static in ° [RMS]
    0.02
  • Angle accuracy dynamic in ° [RMS]
    0.02
  • Resolution angle [°]
    0.001
  • Angular roll/pitch range [°]
    360
  • Angular rate range [°/s]
    150
  • Resolution heave [m]
    0.01
  • Max. output heave range [m]
    100
  • Output period real time [s]
    25
  • Heave accuracy real time [%]
    5
  • Output period delayed [s]
    50
  • Heave accuracy delayed [%]
    2
  • Acceleration measurement
    Y
  • Acceleration range m/s2
    60
  • 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
    Analog,
  • Data output rate
    200 Hz
  • Data output protocols/formats
    MRU normal, Atlas Fansweep, NMEA proprietary, TSS1, Sounder, Seapath binary 23, EM3000 & PFreeHeave®. The MRU 5 outputs roll, pitch and yaw angles and corresponding angular rate vectors. The unit outputs relative (dynamic) heave, surge and sway positions, velocities and accelerations in adjustable frames. Output protocols for commonly used survey equipment are available on two individually configurable serial lines and Ethernet/UDP.

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