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Meet the 425 Series

The 425 Series comprises compact, high‑accuracy rotary torque transducers designed for reliable torque measurement in test, development, and industrial applications.

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The 425 Series are fully compatible with Datum Link for iOS, Android, and Windows devices. Datum Link is a professional application that connects with Datum torque sensors, providing the user with convenient and responsive live monitoring, log file management, and data reporting functionality, completely free of charge.

Learn about Datum Link using the button below, or keep reading to meet the 425 Series.


Image of an M425 Inline Rotary Torque Sensor by Datum Electronics. Ideal Keyway Shaft Torque Transducer for Torque Measurement.

M425 Torque Transducer

The M425 Torque Transducer by Datum Electronics is a highly-accurate inline rotary torque sensor, available in a variety of sizes and capable of measuring bidirectional torque from 10 N·m to 30 kN·m.

With a compact, robust design, integrated self-supporting bearings, and a choice of digital and analogue outputs, the Datum M425 is built for seamless integration into customer test beds and is employed in a diverse range of global industries.

RS425 Contactless Torque Transducer

The RS425 Contactless Torque Transducer by Datum Electronics, is a high-performance shaft torque sensor designed for inline installation in drivetrains and test rigs. The Datum RS425 is a truly non-contact
system, featuring wireless telemetry and a gap between rotor and stator, resulting in a bearing-free sensor, capable of very high speeds without wear, or placing frictional loads on the rotating drive shaft.

The Datum RS425 can be supplied with standard keyways or fully customised shaft configurations, covering a wide torque range from 3 N·m up to 30,000 N·m. Optional upgrades include extended RPM capability and enhanced IP ratings, making it a versatile solution for both industrial and R&D settings.

Datum Electronics RS425 Contactless Torque Transducer torque sensor
Datum Electronics FF425 Connect Flange Torque Transducer

FF425 Flanged Torque Transducer

The FF425 Flanged Torque Transducer by Datum Electronics, is a precision flanged torque sensor designed for inline installation in drivetrains and test rigs. Available in a variety of sizes, coupling types, and torque ranges from 100 N·m to 30,000 N·m, the Datum FF425 is a
versatile choice for both OEMs and retrofit applications across a wide range of industries.

The Datum FF425 combines highly-accurate strain-gauge technology, robust construction quality, and a high-tech contactless communication system to deliver high resolution torque, RPM, and shaft power data across a comprehensive range of available digital and analogue outputs.

PTO425 Tractor Power Takeoff Shaft Torque Monitor

The Datum Electronics PTO Torque and Power Monitoring System measures and logs the torque, RPM, and shaft power transmitted from the tractor to the PTO (power take-off) or stub shaft-driven machinery.

The Datum PTO425 combines strain-gauge technology, robust build quality, and wireless telemetry, to deliver highly accurate performance data

Compatible with all standard PTO shafts and offering a range of digital and analogue inputs, the Datum PTO425 is ideal for those seeking validate performance, optimise efficiency, and ensure safe operation in heavy duty agricultural and industrial applications.

Tractor Power Take Off Shaft Monitoring System Datum PTO

Working with very high torques?

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The LTS Series: High Torque Sensors for Heavy Industry

Large Torque Sensor with control unit

The LTS Series is a range of highly accurate torque measurement systems designed for very high torques ranging from 40 kN⋅m to 500 kN⋅m. Derived from our Marine Shaft Power Meter technology platform and proven in thousands of vessels over several decades, LTS Series transducers are engineered for long‑term continuous operation with low maintenance requirements, even in challenging environments.

Enquire Today

To speak to our team, request a quotation, or discuss your application with our torque specialists, please contact us using the form below: