RWT410 | RWT420 Drehmomentaufnehmer

Digitaler Drehmomentaufnehmer mit integrierter Elektronik

About the RWT410 | RWT420 Rotating Torque Sensor

TorqSense Digital RWT410/420 series transducers with integral electronics now offer cost effective, non-contact digital rotary torque measurement, using Surface Acoustic Wave technology, suitable for torque monitoring, testing or controlling drive mechanisms. TorqSense RWT410/420 series transducers and their technology are particularly appropriate for OEM applications.

The new TorqSense RWT410/420 torque sensors replace the RWT310/320 series and feature all new electronics that have produced significant performance gains in resolution, frequency response, reduced sensor current consumption and faster digital data throughput. Transducer overload has also been increased to 300 %.

Key features RWT410 | RWT420

  • Minimal shaft length - High shaft stiffness
  • Low inertia - High Speed capability because electronics are not fixed on to shaft
  • Non contact measurement
  • High bandwidth 10 kHz
  • 300 % safe mechanical overload
  • High accuracy (0.25 %) and resolution (0.02 %)
  • Excellent noise immunity
  • Integral digital electronics
  • Operates both statically and dynamically - clockwise/anti-clockwise
  • Any full scale torque can be specified within standard range: 1 Nm through to 13000 Nm
  • Lifetime warranty

Consult factory for ranges greater than 13 kNm. High speeds available on request.

Technology

TorqSense patented technology is the measurement of the resonant frequency change in 'frequency dependent' surface acoustic wave devices, caused when strain is applied. The signal is coupled via a non-contact RF rotating couple from the shaft to a fixed pick-up.

Integral electronics enables the resonant frequencies to be measured and offer user selectable features, digital outputs and diagnostics. SAW devices are not affected by magnetic fields.

RWT410 / TorqSense RWT410 series transducers offer

  • Fixed voltage or current analog outputs (one for torque and the other for speed or power) for interfacing with analog instrumentation
  • BIT Self-diagnostics for letting the manufacturer know that the transducer’s torque, speed ratings and calibration due date have not been exceeded.
  • Simple ‘Sensor status’ output pin
  • Sensors to monitor shaft temperature for better compensation and accuracy

RWT420 / Whereas, TorqSense RWT420 series transducers offer

  • Digital outputs, such as RS232, CANbus and USB, for interfacing with modern instrumentation and laptops
  • Digital input for configuring transducer via PC
  • 2 x user selectable voltage or current analog outputs (one for torque and the other for speed, power or peak torque) for interfacing with analog instrumentation
  • Transducer configuration software to allow user to changes transducer variables
  • BIT Self-diagnostics for letting users know data is trustworthy, that the transducer’s torque, speed ratings and calibration due date have not been exceeded
  • Simple ‘Sensor status’ output pin
  • Sensors to monitor shaft temperature for better compensation and accuracy
  • Ability to connect up to 10 transducers using USB

Produktspezifikationen

Torque range
1 - 13000 Nm
Combined non-linearity and hysteresis
±0.25 (±0.5 for 2.5Nm and below) %FS
Output
±1 V, ±5 V, ±10 V, 4-20 mA, 0-20 mA, 12±8 mA, CAN Bus, RS232, USB
Rotational speed (max)
6000 - 30000 rpm
Temperature accuracy
±1 °C
Operating range, ΔTO
-10 to +50 °C
Storage range, ΔTS
-20 to +70 °C
Resolution
0.02%FS
Repeatability
0.1%FS
Nominal voltage, VS
12 to 32 (max) V
Power consumption, Ws
3 W