Ref: DRVL - haute précision

Rotary torque meter 0.02 Nm - 20.000 Nm - Accuracy 0.1%

  • 23 measuring ranges from 0.02 Nm to 20,000 Nm
  • Maximum speed: 4000 to 37,000 rpm depending on the model
  • Output signal: ±10 V or Frequency: 10 kHz +- 5kHz
  • Accuracy: 0.1% (0.05% optional)
  • Transmission of the rotor/stator measurement signal without contact
  • Connector output (Connector supplied)
  • Cylindrical section shaft
  • Overload protection: 100%
  • Optional coupling and cable

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Introduction

The DRVL series of rotary torque transducers is used for precision torque measurement during rotation. 23 versions are available, allowing torque to be measured over ranges from 0.02Nm to 20,000Nm, at speeds up to 37,000rpm, with an accuracy of 0.1% (0.05% as an option). A speed or angle output can be added as an option, eliminating the need for an additional speed sensor and allowing the actual power to be obtained directly at the shaft. The bandwidth is 0-200 Hz (0-1kHz optional).

The signal transmission between the measuring shaft and the stator is contactless, providing the advantage of optimised service life and minimised measurement noise.

The torquemeter includes amplification electronics, allowing the acquisition of the measurement signal with a simple analogue card (± 10 Vdc). A frequency output (10 KHz ± 5 kHz) is also available, allowing the conditioning stage to be dispensed with. The 12-pin connector includes the power pins (10-28 Vdc) and the various analogue outputs.

Specifications

Common to the range

Output signal Accuracy Bandwidth [Hz] Surcharge max. Operating temperature Temperature compensation Sealing Power supply
±10V et 10kHz ± 5kHz ±0,1% 0-200Hz 100% 0-60°C 5-45°C IP40 10-28VDC

Available versions

Model DRVL DRVL-I DRVL-Ib DRVL-II DRVL-III DRVL-IV DRVL-V DRVL-VI
Measuring range 0,02 0,05 0,1 Nm 0,05 0,10,2 0,5 1 2 Nm 1-2-5-10 Nm 5-10-20-30-50 Nm 50-100-150-200-300 Nm 500-1000-1300-1500 Nm 2000-3000-4000-5000 Nm 10000-15000-20000 Nm
Speed of rotation 20000 tr/min 37000 tr/min 26000 tr/min 19000 tr/min 13500 tr/min 7900 tr/min 6300 tr/min 4000 tr/min
Bandwidth [Hz] 0-200Hz 0-200Hz 0-200Hz 0-200Hz 0-200Hz 0-200Hz 0-200Hz 0-200Hz
3D model step 0,05 à 1Nm 2Nm step step step step step step

Installation

The interfaces of the DRVL consist of two smooth shafts. Mounting is usually done by selecting two couplings and/or woodruff. For low torques, the torque meter can be mounted suspended. For higher torques, it is recommended that it be free-standing. The DRVL is supplied with 10-28.8 VDC.

Options and accessories for installation include:

  • shielded electrical cable, length 2.5, 5 or 10m
  • shafts with woodruff
  • couplings
  • Displays and data acquisition systems can also be supplied as options.

Applications

The DRVL is intended for characterisation and verification measurements on test benches:

  • power bench
  • measurement of the efficiency of electric generators
  • Characterisation of electric motors
  • Torque measurement on transmission
  • Torque monitoring
  • Integration of a low pass filter

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