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Product Name:MRU 2
Product 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
Height [m]:0.14
Weight in water [kg]:
Material :Anodised aluminium
Min. Voltage (AC):
Max. Voltage (AC):
Min. Voltage (DC):10
Max. Voltage (DC):36
Power consumption [W]:4.9
Min. operating temperature [°C] :-5
Max. operating temperature [°C] :55
Splashproof casting:Y
Water resistant casting :N
Water resistance [m]:
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 Output 
Roll and pitch measurement:Y
Angle accuracy static in ° [RMS]:0.08
Angle accuracy dynamic in ° [RMS]:0.1
Resolution angle [°]:0.001
Angular roll/pitch range [°]:
Angular rate range [°/s]:100
Max. rotation speed [deg/s]:
Heave Output 
Resolution heave [m] :
Samples p/second:
Max. output heave range [m]:
Output period real time [s]:
Heave accuracy real time [%]:
Output period delayed [s]:
Heave accuracy delayed [%]:
Acceleration Output 
Acceleration measurement:Y
Acceleration range m/s2 :30
Acceleration noise m/s2 RMS:0.002
Acceleration accuracy m/s2 RMS :0.01
Interfaces and Data 
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.
Velocity input data and formats :
Heading input data and formats :

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