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The Geislinger Monitoring System (GMS MK5) is a highly robust and precise monitoring solution designed to continuously monitor torsional vibration amplitudes in various applications. Its main task is to recognize functional deviations of monitored components and to detect critical overloads so that damage to the damper, coupling or other powertrain component can be avoided. The main task is to provide operational safety and to reduce unexpected downtimes.

The GMS MK5 continuously monitors torsional vibrations of rotating components. Reliable sensors in combination with sturdy measuring gears detect torsional vibrations precisely in couplings, dampers, camshafts and drive shafts. The advanced user interface provides a fast insight into the condition of monitored powertrain components and thus helps to save cost by reducing unexpected downtimes or by optimized running conditions. The system gives a visual and audible alarm signal when safety limits are reached or exceeded.

The Geislinger Monitoring (GMS MK 5) has a modular design and can be customized to monitor multiple parameters simultaneously. Customized algorithms filter and calculate static and dynamic twists between the elements as well as the vibratory angle. The calculated torsional vibration values are shown on the color display as figures, bar graphs, or as FFT analyzed values. Intuitive operation by just pressing a single touch-button goes in-line with the robust design and guarantees reliable operation even under the roughest conditions.

The system features an easy-to-use USB interface for data acquisition; from this valuable information, Geislinger specialists can evaluate if the damper or coupling is functioning correctly. The statement issued can be used as an official service document. It is recognized by classification societies and can also prevent the necessity of carrying out an overhaul.

The GMS MK5 is intended for the use in a wide range of applications, such as marine propulsion, power generation, wind power, compressors, and the oil and gas industry. It is typically used in conjunction with Geislinger Torsional Vibration Dampers or Torsional Elastic Couplings to determine the exact condition of monitored components.


  • Operational safety, low running cost and increased service life due to early problem detection
  • Simple monitoring of torsional vibrations
  • Modular design, easily expandable
  • Integration into the ship’s network or existing AMS
  • Geislinger Worldwide After Sales Service

Technical data

  • Self-monitoring system unit with a malfunction alarm
  • 6 digital inputs and 4 analogue inputs
  • USB 2.0 for data acquisition and programming
  • 4 potential-free relay switches for alarm output
  • Analogue output (4 – 20 mA)
  • TFT color display, touch-button operation
    • ISO-fitting dimensions 192 x 147 mm
    • 24 V DC power supply, overvoltage protection
  • Maximum operating temperatures:
    • System Unit: 55°C, Junction Box: 70°C, Inductive sensors: 100°C
  • Technical standards:
    • DNVGL type approval and tested according to IACS E-10
    • IP54 (display unit, front only) and IP67 (junction box)


  • 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 Ensures trouble free operation of Geislinger Dampers
  • Oil Pressure and Temperature Monitoring Sensors inside the Geislinger oil supply are available as an option for 2-stroke applications.