Product Specification: KONGSBERG MRU-E-JB3 Motion Reference Unit
KONGSBERG MRU-E-JB3 is a fifth-generation motion reference unit (MRU) designed for marine applications, providing high-precision measurements of roll, pitch, and heave motion. It is optimized for challenging environments, including offshore operations, dynamic positioning systems, and helicopter deck monitoring.
1. Product Description
The MRU-E-JB3 is a compact, rugged sensor that combines solid-state MEMS gyroscopes and accelerometers to deliver real-time motion data. Key features include:
3-Axis Motion Tracking: Measures roll, pitch, and heave with exceptional accuracy.
Wide Temperature Range: Operates in ambient temperatures from -25°C to +70°C, suitable for extreme marine conditions.
Helideck Monitoring: Complies with Helicopter Capability Assessment (HCA) requirements, calculating Motion Severity Index (MSI) for safe helicopter operations.
Phase-Free Heave: Uses pFreeHeave algorithm for delayed heave measurements, critical for applications like seabed mapping.
2. Technical Parameters
Parameter
Specification
Roll/Pitch Accuracy
Static RMS: 0.03° Dynamic (1σ): 0.010°
Heave Accuracy
Real-time RMS: 5 cm or 5% Delayed RMS: 1 cm or 1%
Heave Period
Real-time: 25 s Delayed: 50 s
Data Output Rate
200 Hz (high-speed applications)
Communication
RS-232, RS-422, Ethernet (selectable protocols via software)
Power Supply
100–240V AC (via built-in XP Power ECL15US24-E module) Output: 24V DC, 0.63 A
Hydrography: Seabed mapping and sonar motion compensation.
Energy: Vessel-mounted sensor platforms for subsea operations.
4. Key Features & Advantages
Lever Arm Compensation: Corrects measurements based on mounting position relative to the vessel’s center of gravity.
Redundancy: Dual communication buses (e.g., Ethernet + serial) for fault tolerance.
Modular Design: Configurable via Windows-based software for specific monitoring points.
Certifications: Meets HCA, DNV GL, and IMO standards.
5. Supplier & Pricing
New Units: Pricing varies by configuration (e.g., with/without power supply).
Refurbished Units: Available from marine suppliers like.
Authorized Dealers: KONGSBERG Maritime, global distributors, and industrial automation suppliers.
6. Notes
Model Variant: The -JB3 suffix likely denotes a specific configuration (e.g., built-in power supply).
Installation: Requires secure mounting and lever arm calibration for accurate measurements.
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Full 12-month warranty on all components
Full 12-month warranty on all components
