Tech Overview Related Products


The latest GMS Mk6 is the gateway to the digital world. It can monitor torsional vibrations throughout the drive train and predict failures by detecting abnormal behavior early. Connectivity and data acquisition in the new Geislinger Monitoring System Mk6 enables Big Data analysis and machine learning. 30 years of experience in vibration monitoring and more than 60 years of experience in torsional vibration analysis give us a deep understanding of the system.


The latest Geislinger Monitoring System is a continuous monitoring and measuring system for rotating components of the entire powertrain. It is designed for use in a wide range of applications, such as marine propulsion, power generation, wind power, railroads, compressors, industrial applications or for test benches.

The Geislinger Monitoring System Mk6 is often used in conjunction with Geislinger torsional vibration dampers and torsionally flexible couplings. Its main task is to monitor the components and detect functional deviations. An alarm is triggered when safety limits are reached or exceeded. This allows the user to take appropriate measures to prevent component or system failure.

In addition, reports can be issued and used as an official service document. It is recognized by classification societies and can also prevent overhaul.


A key feature of the Geislinger Monitoring System Mk6 generation is connectivity. The use of the GMS Mk6 makes it possible to continuously send data to the Geislinger Analytics Platform (GAP). This data can be used for further system analysis or condition monitoring using machine learning or statistical analysis combined with expert knowledge.

Various data interfaces and supported bus protocols allow full interconnectivity to connect the GMS Mk6 to third-party systems, push data into the Geislinger Analytics Platform, or provide remote access to the Geislinger Monitoring System Mk6 for the Geislinger service team.

The analysis results are made available to the operator to set up predictive maintenance and optimize performance. In addition, with the GMS Mk6 it is now possible to access the user interface from any device, e.g. via a remote desktop connection. Connectivity to other systems enables the combination of different data sources, allowing even better system understanding and analysis.


In addition to Geislinger's standard product monitoring applications, individual and customized torsional vibration monitoring solutions are available for virtually all powertrain components. These solutions are designed after a comprehensive system analysis by Geislinger's torsional vibration experts in conjunction with Geislinger's extensive engineering expertise in high performance drives.

Customized algorithms filter and calculate the static and dynamic torsion between elements as well as the torsional vibration angle. The calculated torsional vibration values are displayed on an intuitive user interface, which can be displayed either on a touch-operated control panel or on an existing computer in the control center.

On the hardware side, several physical interface options are available (see Technical Data) to ensure smooth connection to third-party systems. The Geislinger Monitoring System Mk6 is modular and can be customized by adding additional input and output signals, monitoring functions or algorithms. Reliable sensors in combination with robust measuring gears record precise torsional vibrations in couplings, dampers and the entire drive train.

On the software side, various Ethernet-based protocols and experience with different data platforms allow easy integration of vibration data into a third-party platform.


  • Additional operational safety, low running costs and increased service life due to problems being detected early
  • Reduction of unplanned downtimes and thus significant cost savings
  • Simple monitoring of torsional vibrations
  • Modular design, easily expandable
  • High level of connectivity, for integration into the ship’s network or existing AMS
  • Cloud-based online monitoring of torsional vibrations and permanent measurements due to the access to the Geislinger Analytics Platform
  • Automated data acquisition and corresponding data analysis: Switch from periodic to condition-based maintenance
  • Geislinger Worldwide After Sales Service

Technical data

  • Self-monitoring system unit with a malfunction alarm
  • System Unit (IP20), Junction Box (IP65), Operator Panel (front IP65, back IP20)
  • Electrical and environmental testing according to IACS E-10 rules and type approval from DNV GL
  • 24 V DC power supply, overvoltage protection
  • State-of-the-art connectivity options
  • Physical interfaces: 1x USB 3.0 for data acquisition, 1x EtherCAT, 2x Gbit Ethernet for ship network integration, Micro SD, 1x DVI, 1x CAN, 1x RS 232/422/485
  • Supported Ethernet-based protocols: Modbus TCP, HTTP / HTTPS / WebSocket, OPC UA. Additional protocols are available on request (MQTT, SSH, SCP, FTP, …)
  • 6 potential-free relay switches for alarm output (4 x opener and 2 closers)
  • 4 analogue output (4 – 20 mA), resolution 12 bit (1x Buzzer connected)
  • Maximum operating temperatures: 55°C
  • 24 V DC power supply, overvoltage protection
  • Maximum operating temperatures: 70°C
  • 4 digital inputs
  • 4 analogue inputs
  • Temperature measurement unit: 4 inputs, supported resistance sensor types NTC, PT 100, PT 1000, NI 100, NI 1000
  • TFT-Display with touchscreen
  • (7” TFT-LCD, 1.024 x 600 Pixel) Maximum operating temperatures: 55°C 24 V DC power supply
  • DVI / RFB
  • Height: 135 mm, Width: 200 mm, Depth: 27 mm, Weight: 1,1 kg
  • Inductive or hall sensors
  • Temperature sensors (PT100)
  • Pressure sensors (4 – 20 mA)


  • Geislinger Analytics Platform: Cloud-based online monitoring platform of torsional vibrations and permanent measurements allowing for predictive analysis and anomaly detection.
  • Misfiring (free-end) Monitoring: If a cylinder misfires, the alarm signal can be used as a warning to reduce the engine load or to disengage a clutch to avoid excessive vibration levels and further subsequent damage.
  • Crankshaft stress or intermediate shaft stress monitoring: Monitoring a critical order range of the vibratory angle at the free end of the crankshaft can be used for detecting dangerous operating conditions for crankshafts or other driveline components.
  • Damper Monitoring: Monitoring the damper twist ensures trouble-free operation of Geislinger dampers.
  • Coupling Monitoring: Static and dynamic twists are calculated; both the power transmitted and torque are displayed.
  • Shaft and Power Monitoring: Engine output and shaftline vibrations are displayed to optimize fuel consumption and increase the propulsion safety level.
  • Oil Pressure and Temperature Monitoring: Sensors inside the Geislinger oil supply are available as an option for 2-stroke applications. Multiple Product Monitoring: Multiple Geislinger products can be monitored on one or several engines.



- Measures and monitors static torque and transmitted power

- Measures static torsion between two rotating racks mounted on the shaft line and is integrated into the coupling

- Online calibration


- The Geislinger Monitoring System Mk6 is often used in conjunction with Geislinger torsional vibration dampers and torsional elastic couplings

- The main task is to monitor the components and detect functional deviations

In many propulsion systems, critical intermediate shaft loads can be caused by torsional vibrations, which can lead to failures of the main shaft components.

- The Geislinger Monitoring System Mk6 is designed to detect such overloads in the shaftline

- Exceeding of IACS UR M68 stress limits trigger an alarm or warning on site (for the crew)

- Critical operating conditions leading to high wear on components can be detected by continuous torsional vibration monitoring

The Geislinger Group consists of a worldwide network of subsidiaries and service partners that provide customer services anywhere and at any time.

Our experienced service personnel have successfully completed thousands of installations of the previous Mk4 and Mk5 monitoring systems. Depending on the location of the vessel, our service department will coordinate the best and fastest installation by a Geislinger expert.

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