Shaft power and torque measurement – TORXmeter® digi

Shaft power measurement is important for ships for the following reasons:

Efficiency and fuel consumption: Optimizes fuel consumption and reduces costs and emissions.
Maintenance and service life: Allows early detection of wear and mechanical problems, extends the service life of machinery.
Operating efficiency: Identifies optimal operating modes for different conditions.
Regulatory requirements: Helps to comply with legal regulations on energy efficiency and emissions.
Sustainability: Reduces environmental impact and supports global climate goals.
Safety aspects: Prevents operation outside optimal power limits, which can be critical in emergencies or bad weather.

Overall, shaft power measurement ensures efficient, economical, environmentally friendly and safe ship operation

The TORXmeter® digi shaft power measurement system is the improved system for speed, torque and power measurement on ship shafts and offers extensive data analysis options

More functionality – more flexibility
ShaPoLi-compliant – class certification in progress

Simple operation

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).

Benefits

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

Scope of supply

Control unit with small display inside
A1/A2 Pre-wired cable between Control Unit and EXFR sensors
(appr. 7,5 m)
B1/B2 Pre-wired cable between Control Unit and EXFR sensors
(appr. 7,5 m)
2 x Welding brackets (bracket must be welded to
ships structure –No.4)
2 x Sensor holder with pre-mounted 2 x 2 EXFR sensors mkII
(A1/A2) (B1/B2)
2 x EXFR sensor belts mkII
PC Software for setup parameter, display of measurement data and calibration (no picture)
“Torsional vibration” viewer of raw data and twist (no picture)

Technical specification

Sensor accuracy: <0.1 % (shaft torque, shaft speed, shaft power)
<0.1 %+Ke (shaft torque) (Ke means total error of the shaft modulus constant and the shaft diameter)
System accuracy: <0.1 % (shaft power, shaft speed)
Shaft diameter: 150 mm up to 3000 mm
Speed range: up to 1200 rpm
Data output: 4×4-20mA outputs (torque, shaft power, speed and bipolar speed); RS485 NMEA protocol,
Alarm output (overload and system error)
Data storage: Mini SD card
Communication: Setup via laptop of all parameters via software and USB connection
Small color display for setting and displaying measurement data
Power outputs:
Output via RS485 (NMEA183) protocol 1/s; baud rate 4800 to 38400
Output for °twist/°crankshaft; resolution <2°; binary 14 bytes
Update: via USB connection
Options: Repeater display, ShaPoLi display, fuel display

Brochure

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Shaft power and torque measurement – TORXmeter® digi

The TORXmeter® digi shaft power measurement system is the improved system for speed, torque and power measurement on ship shafts and offers extensive data analysis options

Contact

Certificate

Brochure

TX Industrie