Description
- The KONGSBERG MRU H is a high-performance marine motion sensor designed for roll, pitch, and heave measurements in demanding offshore environments. This unit, typically supplied with the MRU-E-JB3 Junction Box, provides critical orientation data to dynamic positioning (DP) systems, helideck monitoring, and crane compensation systems, ensuring stability and safety for maritime operations.
Product Parameters
- Roll/Pitch Accuracy: 0.05° (RMS)
- Heave Accuracy: 5 cm or 5% (whichever is greater)
- Dynamic Range: ±100°/s (Angular Rate), ±30 m/s² (Acceleration)
- Interface: RS-232 / RS-422 Serial and Ethernet
- Power Supply: 24 VDC (via Junction Box)
- Junction Box Model: MRU-E-JB3 (Provides power distribution and signal termination)
Product Specifications
- Origin: Norway
- Discontinued Status: Active / Supported
- Weight: 2.5 kg (Sensor only)
- Dimensions: 105 x 140 mm (Cylindrical Housing)
- Protection Rating: IP66 / IP67 (Seawater resistant)
- Datasheet: Available upon request
Application Fields
- Offshore Vessels: Essential sensor for Dynamic Positioning (DP2/DP3) classes.
- Hydrographic Surveying: Real-time motion compensation for multibeam echo sounders.
- Helideck Monitoring: Measuring deck inclination and heave for safe flight operations.
- Subsea Construction: Orienting ROVs and subsea templates during installation.
Product Q&A
Q: What is the function of the MRU-E-JB3 Junction Box? A: It acts as the central connection hub, providing filtered power to the MRU and breaking out the complex sensor connector into standard terminals for serial and Ethernet cables.
Q: Does the MRU H require regular recalibration? A: Kongsberg recommends periodic factory verification to maintain peak accuracy, though the solid-state sensors are designed for long-term stability without drift.
Q: Can this unit be mounted in any orientation? A: While it has internal software for orientation correction, it is best installed as close as possible to the vessel’s center of gravity (CoG) for the most accurate heave measurements.
