Shaft Driven Transformer Coupled Torque Sensor Model T261

///Shaft Driven Transformer Coupled Torque Sensor Model T261

Shaft Driven Transformer Coupled Torque Sensor Model T261


  • Non-Contact measurement of torque
  • High stiffness and low inertia
  • On-board shunt calibration circuit
  • Internal zero velocity speed sensor
  • (optional) i200 AC carrier electronics (optional)
  • SAE 4340 alloy steel construction with satin nickel finish

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The T261 rotary transformer coupled torque sensor was designed for in-line testing of motors, engines, transmissions, propellers, pumps, drivelines, and similar rotating devices. The T261 has greater stiffness, less rotating inertia, and smaller size than comparable models available from other suppliers. The T261 requires the use of AC carrier strain gage signal conditioning electronics such as SensorData’s i200. The optional zero velocity speed sensor is installed inside the T261 housing. Interconnecting cable assemblies are available as an option. SensorData will provide in-house calibration of the T261 with customersupplied electronics for a fee.

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Additional information


T261-STD, T261-231


Rated Capacity5K, 10K, 20K lb-in
Rated Speed 10,000 rpm
Nonlinearity0.05% of rated output
Hysteresis0.05% of rated output
Nonrepeatability0.02% of rated output
Rated Output, bridge, typical2 mV/V
Zero Balance+/-0.5% of rated output
Temperature Range, operating-20 to +200 F
Temperature Range, compensated+68 to +170 F
Temperature Effect on Output0.001% of load/F
Temperature Effect on Zero0.001% of rated output/F
Bridge Resistance, typical350 ohms
Excitation2.8 to 5 VAC rms, 3 kHz to 5 kHz
Insulation Resistance, bridge to case>5000 megohms at 50 VDC
Input voltage, speed sensor, Vcc (optional) (1)4.5 to 24 VDC
Maximum Load, safe (2)200% of rated capacity
Maximum Load, ultimate (3)400% of rated capacity
Number of Bridges1
Weight11.5 lb without i200, 12.5 lb with i200
Construction SAE 4340 alloy steel with satin nickel finish