In Marine technology, Kongsberg Maritime’s MRU-E-JB-1 Motion Reference Unit is a high-precision sensor designed for offshore applications that provides motion data such as rolling, pitching and heave. This fifth generation MRU sensor operates over an extended temperature range with ambient temperatures from -25°C to +70°C, making it ideal for Marine applications. The design of the MRU-E-JB-1 enables it to be installed in a variety of locations, such as open decks, cabinets or bulkheads, and is an essential component for systems requiring accurate motion measurements.

The MRU-E-JB-1 is particularly suitable for helicopter deck monitoring systems and can be strategically installed below the center of the helicopter deck to measure triaxial acceleration as well as rolling, pitch and pitch, which are critical for helicopter deck monitoring systems. It helps to provide information on the location of the helicopter deck, especially when the deck is separated from living quarters and hull areas. The MRU-E-JB-1 meets Helicopter deck Operation (HCA) requirements and measures helicopter deck acceleration to calculate the Motion Severity Index (MSI), an important safety indicator in offshore operations.

The MRU-E-JB-1 uses the PFreeHeave algorithm to provide accurate and phase-free measurements of heave using past data. This feature is particularly beneficial in long surge conditions and is critical for applications that can accommodate slight delays in the surge signal, such as seabed mapping. To ensure maximum accuracy for pitching, rolling, and pitching during turning and acceleration, the sensors accept external inputs, including independent speed and heading information via serial lines or Ethernet.

Key features of the MRU-E-JB-1 include:

0.05° rolling and pitching accuracy

Output real-time pitch, roll, pitch and linear acceleration measurements

Output via RS-232, RS-422 and Ethernet

High output data rate (200 Hz)

Each MRU comes with a calibration certificate

Unlimited mounting direction

The lever arm compensates to two individually configurable monitoring points

Meet HCA requirements

Small size, light weight and low power consumption

Communication protocols can be selected in the Windows-based MRU configuration software

2 years warranty

Kongsberg Maritime’s MRU-E-JB-1 Motion reference unit provides strong technical support for offshore operations through its high accuracy and reliability, whether in scientific research, offshore engineering or commercial shipping, playing a vital role. As the technology continues to advance, the MRU-E-JB-1 is expected to play a more critical role in the field of Marine technology and automation.