Continuous monitoring of shaft power
Permanent Shaft Power Monitoring is used for Continuous measurement of torque, RPM and shaft power on rotating shafts in marine propulsion systems.
By combining torque measurement with axle speed, the system can calculate the current shaft power (shaft power) delivered to the propeller. This provides a continuous overview of the load on the propulsion system and makes it possible to optimise operation, energy efficiency and fuel consumption.
The systems are installed directly on the axle using strain gauges and telemetry, which makes it possible to measure without dismantling the powertrain.
Two solutions for permanent shaft power measurement
TorqueTrak TPM2
Permanent system with external supply
TorqueTrak TPM2 is a robust system designed for Continuously measure torque and power on rotating shafts in real-time.
The system typically consists of a rotary measuring unit and a stationary receiver, which is mounted around the shaft without the need to disassemble the machine.
Advantages
- Continuous measurement of torque, RPM and power
- High measurement accuracy (up to approx. 0.1 % instrumentation accuracy)
- Data output to PLC or monitoring systems (Modbus, analogue or RS communication)
- Robust design for demanding maritime environments
Typical applications
- Permanent monitoring of propulsion systems
- energy efficiency
- Performance analysis of powertrains
- integration into energy monitoring systems
TorqueTrak SPM-iON
Battery-based permanent measurement system
TorqueTrak SPM-iON is a compact solution for Permanent monitoring of torque and shaft power, where the power supply is battery-based.
The system utilises a Modular collar construction, which can be adapted to different shaft diameters by adding or removing joints in the collar.
Installation can be done without any modifications to the shaft and requires only a few components, making the system quick to install.
Advantages
- Battery-powered system (typically several years of operation)
- Easy installation without base-mount or special brackets
- Built-in RPM measurement
- Suitable for long-term monitoring
Typical applications
- Energy efficiency on ships
- Monitoring of propulsion systems
- Performance analysis of powertrains
- retrofit installations
Integration and data analysis
Measurement data from the systems can be integrated into:
- the ship's surveillance system
- PLC or SCADA
- energy monitoring systems
- performance analysis software
This allows for Continuous monitoring of propulsion system load and efficiency.
