FF425 Non-Contact Torque Transducer

FF425 Non-Contact Rotary Torque Transducers with flange couplings at either end that has the ability to choose sample rates from 1 up to 4000sps, providing a reliable and highly accurate torque measurement solution.

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Series FF425 Non-Contact Rotary Torque Transducer and Series FF410 Static/Reaction Torque Sensor

The latest technology Datum Electronics Series FF425 non-contact rotary torque transducer and FF410 torque sensors have been designed to fit easily inline with any drive train or test rig using standard DIN size couplings. With Flange couplings at either end of the torque transducer, it has many advantages over other torque measurement systems.

FF-425-Torque-Transducer-Range-Flange to Flange Torque Sensors
FF425-10000Nm                                             FF425-60000Nm  

FF425 Non-Contact Torque Transducers and Sensors

The FF425 rotary torque transducer utilises a strain gauged shaft for accurate and reliable torque measurement and a set of rotating on shaft conditioning electronics, the digital signals are transmitted to the non-rotating part of the system or stator providing a reliable and highly accurate torque measurement solution.

Using our revolutionary new electronics as used in our industry standard, M425 inline rotary torque sensor,  the FF425 gives customers higher resolution with up to 24bit resolution and the ability to choose their sample rates from 1 up to 4000sps.

FF425 Non-Contact Torque Sensor Range

The FF425 non-contact rotary flange to flange torque sensor has 11 standard torque ranges. Offering very high accuracy, operational stability, high signal resolution and wide range of signal outputs across the whole range of torque from 0-100Nm and up to 30,000Nm.

FF425 Torque Sensor Measurement Range
Torque Sensor Size12345
Torque Sensor Range: A 0-100Nm0-250Nm0-1,000Nm0-5,000Nm15,000Nm
Torque Sensor Range: B0-500Nm0-2,000Nm0-10,000Nm20,000Nm
Torque Sensor Range: C 0-25,000Nm
Torque Sensor Range: D 0-30,000Nm
Max Shaft Speed (rpm)0-10,0000-10,0000-10,0000-8,0000-6,000

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The FF410 Static/Reaction Torque Sensor Range

The Datum Electronics Series FF410 Reaction torque sensor with standard DIN flanges will be the ideal, if you’re looking to measure static torque. It was developed following developments of our FF425 series of rotary torque transducers. The same basic shaft components and strain gauge technology have been applied to our FF410 Reaction transducer range providing a competitive option within the static transducer market.

The Series 410 Reaction Torque Transducer design, along with many of the strain gauge principles have been applied, allowing us to keep the reaction torque transducer competitively priced with a high torsional stiffness included.

Easy Fit into Rig

The 410 Static Non-Contact Torque Transducer easily fits into your existing test rig or drive train. Using standard DIN flanges, fitting and coupling the static transducer into your rig is made more efficient than other options available. The minimum operating envelope of the Series 410 reaction torque transducer starts from 100mm and will increase depending upon torque measurement requirements.

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      FF425 Rotary Torque Transducer Datasheet

      FF425 Non-Contact Flange Torque Sensor Dimensions


      Torque Sensor SizeRated Load
      Rated Load
      (lb ft)
      Speed (RPM)
      Shaft Length Face to FaceBody WidthFlange
      Male/Female Flange Coupling extrusion/
      flange coupling
      Ø H7/
      h6 TOL (mm)
      (ISO 286)
      Flange ThicknessBase lengthOverall
      fixing slot.
      to centre
      Size 10-1000-1000-10,00097.5501002.5578220143.5188
      Size 2 – A0-2500-2000-10,00097.5501002.5578220143.5188
      Size 2 – B0-5000-4000-10,00097.5501002.5578220143.5188
      Size 3 – A0-1,0000-7500-10,00097.5501202.5758220143.5188
      Size 3 – B0-2,0000-1,5000-10,000107.5501202.5758220143.5188
      Size 4 – A0-5,0000-4,0000-8,00013750180311012220172.5188
      Size 4 – B0-10,0000-8,0000-8,00015760185311015220172.5188
      Size 5 – A0-15,0000-12,0000-6,000216602505.514020300212.5266
      Size 5 – B0-20,0000-15,0000-6,000216602505.514020300212.5266
      Size 5 – C0-25,0000-20,0000-6,00021660285617520300212.5266
      Size 5 – D0-30,0000-25,0000-6,00021660315619022300212.5266

      *For more information please refer to the FF425 Torque Transducer Datasheet in the Technical Documentation section.