A torsion meter is a specialized tool designed to measure torque in rotating shafts, a critical parameter for assessing the mechanical performance of marine propulsion systems. Onboard ships, shaft torsion meters provide vital real-time data on torque, shaft power (kW), and shaft speed (RPM), enabling vessel operators to optimize fuel usage, monitor machinery health, and comply with environmental regulations.
Mechanical torsion meters work by detecting the angular deformation (twist) of a rotating shaft under load. This twist is directly proportional to the torque transmitted. By accurately capturing this torsional strain and combining it with RPM data, the system calculates shaft power. Traditional systems often rely on strain gauges or slip rings, which can be invasive, complex, and maintenance-heavy.
At Neptunus, our advanced TorqueSense solution offers a next-gen marine torsion meter that goes beyond conventional systems to deliver precision, simplicity, and powerful insights.
TorqueSense replaces these with non-contact sensors, offering a frictionless, robust, and maintenance-free method for continuous torque and power measurement—even in harsh marine environments.| Feature | TorqueSense (Neptunus) | Traditional Torsion Meters |
|---|---|---|
| Sensor Type | Non-contact (magnetic) | Strain gauge / Slip ring |
| Shaft Modification Required | No | Yes |
| Maintenance | Maintenance-free | Frequent calibration & upkeep |
| RPM Range | 30 – 3000 | Limited |
| Shaft Size Support | 130 mm – 800 mm | Less flexible |
| Power Measurement Range | 300 kW – 90,000 kW | 500 kW – 50,000 kW (typical) |
| Marine Compliance | IRS, EEXI, ShaPoLi ready | Varies |
| Data Output | Real-time, digital | Analog or delayed |
| Installation Time | Few hours (no drydock) | Several days |
TorqueSense supports Shaft Power Limitation (ShaPoLi) functionality, in line with IMO’s Energy Efficiency Existing Ship Index (EEXI) requirements, It also enables digital reporting to meet Classification bodies like Indian Registry of Shipping.
Through precise power and torque measurement, TorqueSense makes it easier for shipowners to demonstrate compliance, reduce carbon emissions, and enhance vessel performance—all with confidence and data transparency.