Shaft power and torque measurement (TORXmeter® mkII)

The optimal operation of ship systems has become increasingly important in recent years. The development of fuel costs and the various regulations for an energy-efficient ship make this type of measurement technology indispensable.

Torque measurement is an important measuring instrument for complex ship engine monitoring and diagnostics. Not only the torque is determined, but also the shaft speed, so that the shaft power can be calculated from these two variables.

The TORXmeter® mkII shaft power measurement system is one of the most cost-effective and easy-to-install solutions for speed, torque and power measurement on ship shafts

  • Aids for calculating the fuel consumption

Example: Specific fuel consumption, the ratio of the hourly total fuel consumption of the main and auxiliary engines to the driven shaft power

  • Permanent monitoring of the propeller and shaft system condition

Example: Propulsion efficiency = calculated towing power / measured shaft power

  • Main performance parameters for shipyards and ship owners

Example: Determination of the Energy Efficiency Design Index (EEDI)

  • Tool for optimising and improving the performance and efficiency of a ship

Example: Due to the availability of the measuring device (24/7), a permanent comparison of measured data and ships is possible. With additionally installed measuring devices for consumption measurement and a data logger including visualisation, changes in ship operation can be quickly identified.

  • Ship installations for new builds and retrofits

Example: Tankers, container ships, cargo ships (dry cargo ships), ferries, etc.

Two sensors, including sensor bands, are installed as far apart as possible on the ship’s shaft. The measuring principle enables a high resolution of the overall system through extremely fast (EXFR) magnetic scanning of the magnetic pattern of the sensor bands. The sensors utilise the magnetic pole change and the zero crossing (change in magnetic fields) between the two sensor bands to measure the angle. A local display allows the measured values (torque, speed, shaft power) to be read directly on the display or output by connecting to an external system (RS485-NMEA protocol or 4-20mA outputs).

  • Simple installation (no service technician required)
  • Training video on installation included in the scope of delivery
  • Flexible installation options (installation length and shaft diameter)
  • Little space required
  • No electronics on the shaft
  • Wear-free measuring principle
  • High IP class (IP67) (sensor is immune to grease, dirt, liquids and condensation)
  • Components can be easily replaced (plug and play)
  • Fault diagnosis easily possible by email

Tanker Shaft525 TORXmeter

EXFR Sensor/Sensorband/MWE Box

Tanker Terminal Box

Location: Near shaft

Tanker Shaft525 TORXmeter

Shaft installation TORXmeter