Product Description
The KONGSBERG MRU – 5 is a fifth – generation marine motion sensing device designed for high – precision motion measurements in marine applications2. It is the optimal sensor for motion compensation in multi – beam echo sounders, offshore cranes, hydroacoustic positioning systems, and dynamic motion monitoring on offshore structures2. It integrates three high – accuracy accelerometers and three high – end MEMS gyros of the MRG type developed by Kongsberg Seatex, featuring low – noise characteristics, excellent bias stability, and high – gain accuracy4. With the advanced P – Free Heave algorithm, it can overcome the influence of long – swell conditions, and is suitable for applications that can use delayed heave signals, such as seabed mapping operations2.
Product Parameters6
- Orientation Output:
- Angular Orientation Range: ± 45°.
- Resolution in All Axes: 0.0001°.
- Static Accuracy Roll & Pitch: 0.02° RMS.
- Dynamic Accuracy Roll & Pitch (for a ± 5° Amplitude): 0.005 1 – sigma.
- Bandwidth: 0 – 10 Hz.
- Gyro Output:
- Angular Rate Range: ± 75°/s.
- Angular Rate Noise: 0.010°/s RMS.
- Scale Factor Error: 0.02% RMS.
- Heave Output:
- Output Range: ± 50 m, adjustable.
- Heave Accuracy for 0 – 25 s Motion Periods (Real – time): 5 cm or 5%, whichever is highest (RMS).
- Heave Accuracy for 10 s Motion Period (Real – time): 1 cm or 1%, whichever is highest (RMS).
- Heave Accuracy for 0 – 50 s Motion Periods (Delayed): 1 cm or 1%, whichever is highest (RMS).
- Heave Velocity Accuracy: 0.01 m/s RMS.
- Bandwidth: 0.04 – 10 Hz.
Product Specifications4
- General:
- Height: 0.014 m.
- Material: Anodized aluminum.
- Weight: 2.2 kg.
- Dimensions: ø 105 x 140 mm (4.134 x 5.525”).
- Min. Voltage (DC): 10 V.
- Max. Voltage (DC): 36 V.
- Power Consumption: 12 W.
- Environmental:
- Max. Operating Temperature: 55°C.
- Min. Operating Temperature: – 5°C.
- Splash – proof Casting: Yes.
- Water – resistant Casting: No.
