With its compact, bearingless, maintenance-free design, the new 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 receiver. In the receiver, the digitized torque signal is transformed into an analog output signal of ±10 VDC. Rotational speed can be measured and converted to a TTL output signal with the optional speed pickup.

The contactless design of the Torque Flange Sensor permits a gap of up to 5 mm (typically 1 to 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—due to the fact that, unlike other designs, the antenna does not need to be looped around the sensor. Additionally, a protective cover can be mounted close to the sensor with no effect on the signal.
Features
– Complete Torque Measuring System consisting of:
• Measuring flange with signal amplifier
• HF transmitter
• Receiver/Conditioner
• 4 m cable
– Contactless signal transmission: via telemetry
– Torque range: 50 N·m to 150,000 N·m
– High accuracy: 0.1% to 0.25%
– Overload capacity: up to 200%
– Overload limit: 400%
– Compact, easy-to-mount design
– High torsional stiffness
– Bearingless: maintenance and wear-free
– Excellent noise immunity and shock resistance
– Protection class: IP 42 (IP 54 optional)
– 24 VDC standard power supply
– Integrated speed pickup and conditioner (option): for rotational speed measurement
– High temperature capability: up to 125 °C (optional)

Applications
TF Torque Flange Sensors measure both static and dynamic torque on stationary and rotating shafts. They are used in general combustion engine, electric motor and gearbox test benches; and can also be mounted inline for active torque monitoring of transmissions, powertrains, wind generators, gas turbines, boat engines, etc.

 

Model Ratings

Model Rated
Torque *
Overload
Capacity
Accuracy
Class *
Maximum
Speed *
Tortional
Stiffness
Deformation
Angle
Moment of Inertia
N·m % of R.T. rpm N·m/rad ° kg·m² lb·ft·s²
TF 209 20 200% 0.10% 17,000 3.82 × 104 0.03 2.917 × 10-3 2.152 × 10-3
TF 210 50 200% 0.10% 17,000 7.16 × 104 0.04 2.996 × 10-3 2.211 × 10-3
TF 211 100 200% 0.10% 17,000 1.25 × 105 0.046 3.172 × 10-3 2.341 × 10-3
TF 212 200 200% 0.10% 17,000 2.05 × 105 0.056 3.138 × 10-3 2.316 × 10-3
TF 213 500 200% 0.10% 13,000 7.16 × 105 0.04 7.803 × 10-3 5.758 × 10-3
TF 214 1,000 200% 0.10% 13,000 9.55 × 105 0.06 7.818 × 10-3 5.769 × 10-3
TF 215 2,000 200% 0.10% 10,000 2.86 × 106 0.04 1.868 × 10-2 1.378 × 10-2
TF 216 5,000 200% 0.10% 8,000 7.16 × 106 0.04 4.747 × 10-2 3.503 × 10-2
TF 217 10,000 ‡ 150% 0.10% 8,000 1.25 × 107 0.046 4.706 × 10-2 3.472 × 10-2
TF 218 20,000 200% 0.20% – 0.25% 3,000 2.86 × 107 0.04 9.635 × 10-1 7.109 × 10-1
TF 219 50,000 ‡ 180% 0.20% – 0.25% 3,000 6.82 × 107 0.042 9.724 × 10-1 7.175 × 10-1
TF 220 100,000 200% 0.25% – 0.30% 3,000 3.37 × 108 0.017 1.070 × 100 7.895 × 10-1

 

 

* Available upon request:
• Torque up to 150,000 N·m
• 0.05% accuracy
• High speed versions
‡ Dynamic torque peak values for Models TF 217 and TF 219
are due to force transmission limit of mounting screws.

 

Ratings Common to All TF Sensors

 

Torque Sensor Ratings