QWFK-8M Miniature Reaction Torque Sensor

Small and light weight torque sensor with shaft for reaction moments

About the QWFK-8M Miniature Reaction Torque Sensor 

Models QWFK-8M miniature reaction torque transducers is engineered for minimum size and to achieve 0.1% maximum nonlinearity. Four bonded strain gages are positioned on a special machined portion of the transducer to effectively measure even slight torque motion. These models operate and are calibrated in both directions. A modular, stainless steel construction and no moving parts provide excellent durability under harsh industrial conditions. Potential miniature reaction torque transducer applications include motor dynamometer, tire braking, twist measurement, and friction-skid test measurements.

 

Key features QWFK-8M

  • 25 in-oz to 300 in-lb
  • 0.1 % non-linearity and hysteresis
  • Compact size
  • High frequency
  • Stainless steel construction
  • Integral cable (standard)

Specifications

Range
25, 100, 250 in-oz; 50, 100, 300 in-lb (approx. 177 mNm to 34 Nm)
System accuracy
±0.1 % full scale
Linearity
±0.1 % full scale
Hysteresis
±0.1 % full scale
Non-repeatability
±0.03 % full scale
Output
2 mV/V nominal
Resolution
Infinite
Temperature, operating
-54 °C to 107 °C [-65 °F to 225 °F]
Temperature, compensated
6 °C to 71 °C [60 °F to 160 °F]
Temperature effect, zero
0.005 % full scale/°F
Temperature effect, span
0.005 % reading/°F
Strain gage type
Bonded foil
Excitation
10 Vdc (5 Vdc if torque range <100 in-oz)
Bridge resistance
350 ohm
Electrical termination
Teflon cable (1.5 m [5 ft])
Static overload capacity
50 % over capacity
Case material
Stainless steel
Deflection torsional, 25 in-oz to 50 in-lb
0.0027 radians
Deflection torsional, 100 in-lb to 300 in-lb
0.00255 radians
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