TT-Sense® Optical Thrust and Torque Measuring Systems

Product catalog summary

Introduction
VAF Instruments, established in 1938, has developed the TT-Sense® Optical Thrust and Torque Measuring Systems to enhance propulsion efficiency in marine vessels. This system provides insights into propeller efficiency, hull resistance, and vessel trim optimization, potentially saving up to 20% in energy costs.

Why a Thrust and Torque Measuring System?
The system offers precise propulsion efficiency data, allowing for real-time monitoring of thrust, torque, speed, and power. This helps in optimizing propulsion systems, reducing fuel costs, and early detection of propulsion system malfunctions.

Applications
TT-Sense® systems are suitable for various propulsion installations, providing continuous measurement of propeller efficiency, power, thrust, torque, and shaft speed. They offer visual control over changes in resistance or performance due to trimming and fouling.

System Output
The standard output includes thrust, torque, shaft speed, and power signals. It can be extended with additional data inputs like fuel consumption and GPS.

Advantages
The system is robust, durable, and maintenance-free due to its non-contact power and signal transmission. It uses innovative optical sensor technology for high accuracy.

Principle of Operation
The system is mounted on intermediate shafts and uses LEDs and optical sensors to detect small displacements caused by thrust and torque. Data is transmitted wirelessly from the rotating shaft to the stator.

Benefits of Measuring Torque and Thrust
Measuring torque helps in understanding ship resistance changes, engine performance, and optimizing engine-driven installations. Measuring thrust provides detailed insights into propeller and hull performance, aiding in maintenance decisions and energy savings.

Monitoring and Management Solutions
The TT-Sense® system can be integrated with PEM4 and IVY® solutions for comprehensive propulsion performance management, offering visualization of various KPIs and data enrichment.

Technical Specifications
The document provides detailed technical specifications for the TT-Sense® system components, including control boxes, rotor equipment, and display units.

Quotation and Ordering Information
Details required for ordering include the number of units, shaft dimensions, ship details, and system output requirements.

Catalog excerpts

TT-Sense® Optical Thrust and Torque Measuring Systems-1

Optical Thrust and Torque Measuring Systems Insight in Propulsion Efficiency

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TT-Sense® Optical Thrust and Torque Measuring Systems-2

Since 1938 VAF Instruments is an established name in the world of marine measuring equipment. The need for increased energy performance and necessity to comply to rules and regulations, inspired us to develop the next step in our successful line of sensors: the TT-Sense®. The use of a TT-Sense® means getting more insight in your propeller efficiency, hull resistance and vessel trim optimization. Managing propeller thrust and hull resistance at full scale enable savings up to 20% and in some cases even more. This real thrust measurement is performed by highly accurate optical sensor technology....

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TT-Sense® Optical Thrust and Torque Measuring Systems-3

Typical system arrangement Ships monitoring Fault detection Speed log/GPS 12x PT2 Flowmeter (flow + temp) For max. 6 consumers Typical TT-Sense® thrust and torque measuring system with optional fuel consumption measurement

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TT-Sense® Optical Thrust and Torque Measuring Systems-4

Applications of thrust and torque measurement By using the TT-Sense® propeller thrust measuring possibilities, the performance of the propeller and hull can be measured separately providing an important input to fuel saving and maintenance investment decisions. Customers have reported savings of up to 20% on fuel and maintenance costs by managing propeller performance and hull resistance at full scale. The benefits of measuring propeller thrust in addition to torque: - - - In combination with a monitoring or management system, such as VAF Instruments PEM2, PEM4 or IVY®, the TT-Sense® measuring...

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TT-Sense® Optical Thrust and Torque Measuring Systems-5

The TT-Sense® thrust and torque measuring system can be combined with the PEM4 Propulsion Efficiency Monitor, the vessel’s monitoring system and/or IVY® propulsion performance management solution to use TT-Sense® to its full potential. IVY®, VAF Instruments’ solution for Propulsion Performance Management, brings you the fleet at your fingertips. From ship to shore, IVY® enriches big data for powerful analysis. The web application of IVY® provides fleet and ship performance visualisation and insight into the relevant data and more than 30 KPIs. IVY® can be combined with a range of sensors on board,...

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TT-Sense® Optical Thrust and Torque Measuring Systems-6

Technical specification TT-Sense® Control box for stator part Power supply 115 or 230 VAC, 50 or 60 Hz ± 20% Power consumption 40 VA maximum Input 2,4 GHz fully protected encrypted signal Output RS 485 for Modbus over TCP/IP or 4-20 mA isolated current output (optional) Dimensions 408 x 360 x 111 mm Rotor equipment_ Material of mounting rings Carbon steel Material outside cover Polyurea coated high density foam Material compensator arms Carbon steel Shaft speed detection Accelerometer signal Output 2,4 GHz fully protected encrypted signal Shaft diameter Min. 200...

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TT-Sense® Optical Thrust and Torque Measuring Systems-7

TT-Sense® optional components ■I ■■■I = ran PEM4 touch screen SPU3 Signal Processing Unit

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TT-Sense® Optical Thrust and Torque Measuring Systems-8

CD 2. Available shaft length [mm]: cb - f~i 4. Please provide shaft line drawing for information: "05 - O new building O retrofitting CD. 5. Design conditions: power [kW]: thrust [kN]: cb speed [rpm]: co - co shaft material: shear modulus G [N/mm2]: youngs modulus E [N/mm2]: §> shaft diameter (+tolerance) [mm]: (min 200 mm) CD inside (bore) diameter [mm]: co - duty O propeller shaft O other:If 6. System: CD s required output thrust O RS 485/Modbus O other: options O Propulsion Performance Management by IVY® O PEM4 for Fuel Consumption Measurement,...

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TT-Sense® Optical Thrust and Torque Measuring Systems

TT-Sense® Optical Thrust and Torque Measuring Systems

Catalog excerpts

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