TF Series | Torque Flange Sensors

Torque sensors

“ wide range of torque measurements: 20Nm to 200'000 Nm ”

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With its compact, bearingless, maintenance-free design, the TF Torque Flange Sensor from Magtrol brings many appealing advantages to torque measurement applications. The TF’s high torsional rigidity supports direct mounting on the machine shaft or flange, avoiding the use of couplings on one side. This allows easy integration into a test system, shortens the overall length of the test bench and reduces costs.

Based on strain-gauge technology, the TF Sensor’s precise telemetry system enables highly accurate signal transmission. A signal amplifier mounted in the measuring flange amplifies the measuring signal, modulates it to high frequency and transmits it inductively (via the HF transmitter) to the conditioner. In the conditioner, the digitized torque signal is transformed into an analog output signal of ±5 V DC. Rotational speed can be measured and converted to a TTL output signal with the optional speed sensor.

The contactless design of the Torque Flange Sensor permits a gap of up to 5 mm (typically 2 or 3 mm) between the
rotor antenna and HF transmitter, which makes the signal acquisition insensitive to any axial or radial misalignment. Another advantage of this torque measurement system is its insusceptibility to signal interference since the antenna does not need to be looped around the measuring flange. Additionally, a protective cover can be mounted close to the TF Sensor with no effect on the signal.

Technical features

Complete torque measuring system including: measuring flange with signal amplifier, HF transmitter, conditioner and 4m coaxial cable Contactless signal transmission: via telemetry Torque range: 20 N·m to 150,000 N·m (higher on demand) High accuracy: 0.1% to 0.2% (0.05% option) Overload capacity: up to 200% (limit of adhesion) Compact, easy-to-mount design High torsional stiffness Excellent noise immunity and shock resistance Protection class: IP 42 (IP 54 optional) High temperature capability: up to 125 °C (optional)

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