Waterproof Rotary Torque Sensor


The DRWPL waterproof torque sensor series manufactured by ETH Messtechnik in Germany are rated to IP67 and have been specially designed for operation in harsh environments. They will operate happily where dust, water and high humidity are present constantly, and will even withstand short-term immersion to less than 1 metre depth for 30 minutes maximum.

A ±10Vdc analogue output is provided from DRWPL’s internal signal conditioner which offers a 200Hz frequency response. Pulsed speed and angle output options are also available.

Customised couplings can be offered with the DRWPL waterproof torque sensor to ensure straightforward integration into your application along with optimum performance.


Features DRWPL
  • Waterproof IP 67
  • Contactless
  • Integral torque amplifier
  • Single supply voltage
  • Wide range of applications
  • Small form
  • Low moment of inertia
  • Speed measurement (option)
  • Angle measurement (option)


Technical Specifications DRWPL
Supply voltage:12 V DC ± 10 %
Power consumption:approx. 200 mA
Rise time 10-90 %:2 ms
Limit frequency –3 dB:200 Hz (optional 1 kHz)
Voltage output:0 to ± 10 V
Internal resistance:100 Ω
Ripple:< 100 mVss
Nonlinearity/max. measurement error (of full scale):0,1 %
Hysteresis:0,1 %
Deviation at zero point:≤ ± 100 mV
Max. measurement error:
Operating temperature:0 - 60 °C
Compensated temperature range:
Temperature error Zero point: Sensitivity:  0,02 % / K 0,01 % / K
Mechanical overload:100 %
Internal protection:IP 67 DIN 40050
Cable length:2,5 m (standard)
Connection:flying leads
Factory calibration right-/ left load in 25% steps. Special calibration on request.


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