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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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.


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

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


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.


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
rotatif / statique
Moment capacity
0 / 0.02 / 20000 Nm
Measuring Range (Torque)
0.01 - 1 Nm, 1 - 10 Nm, 10 - 100 Nm, 100 - 1000 Nm, 1000 - 5000 Nm, 5000 - 20000 Nm
Max rotation speed
37000 rpm
Nonlinearity (% FS)
± 0.15 %
0.1 % FS
Signal otuput
± 4 VDC, 4-20 mA, 10 kHz ± 5kHz
Sortie régime
Tension d'alimentation
10 Vcc
Protection Class
speed output, display, high accuracy calibration

Standard version

Version with base plate

Connector pins

Pin Signal Signal Signal Color Color
A Frequency output Frequency output Frequency output black black
B NC NC Angle output track B = 90° red red
C Voltage output Voltage output Voltage output brown brown
D Output ground Output ground Output ground white white
E Power supply ground Power supply + speed ground Power supply + angle ground yellow yellow
F Power supply 10-28,8VDC Power supply 10-28,8VDC Power supply 10-28,8VDC purple pink
G NC Speed Output Angle output track A = 0° green green/brown
H Memory chip * only with ETH Evaluation device Memory chip * only with ETH Evaluation device Memory chip * only with ETH Evaluation device pink purple
J Ready output Ready output Ready output grey green/white
K Control input Control input Control input grey/pink grey/pink
L Frequency output inverted Frequency output inverted Frequency output inverted red/blue red/blue
M NC NC Voltage reference angle-signal blue blue

Options and accessories

measuring ranges

23 extensions as standard, specific extensions on request



  • A: Model size (I, II, III, etc.)
  • B: Measuring range [Nm]
  • C: A = Standard, B = speed output, C = angle output
  • D: accuracy option: 0 = standard, 1 = high accuracy
  • E: empty or K = keyway option
  • F: empty or 071 option low pass filter 1 kHz


  • Model AK12.3F: 12 wires, shielded, length: 2.5m, 5m or 10m, open-end
  • Model AK12.3DF: 12 wires, double shielded, length: 2.5m, 5m or 10m, open-end
  • Model AK12.3: 12 wires, shielded, length: 2.5m, 5m or 10m, connector
  • Model AK12.3D: 12 wires, double shielded, length: 2.5m, 5m or 10m, connector


Model Description Couple max. Manuel
BK2 Single coupling 15 à 1500 Nm manuel
BKH Simple, compact 15 à 1500 Nm manuel
BKE simple, low-cost, compact 20, 200, 1000 Nm manuel
BK3 Metal bellows, high clamping force 15 à 10.000 Nm manuel
BK5 manuel
BKL simple, economic 2 à 500 Nm manuel
ROBA-DS 190 à 24.000 Nm manuel
SK2 torque limiter 1.5 à 1500 Nm manuel
SK3 torque limiter 5 à 2800 Nm manuel
SK5 0.1 à 850 Nm manuel
EK1 elastomer, low-cost, woodruff, 0.5 à 1100 Nm manuel
EK2 concentricity, easy mounting, vibration absorption 6 à 1100 Nm manuel
EKH / EKH Radial mounting 4 à 12500 Nm manuel
ES2 torque limiter, débrayable 2 à 900 Nm manuel
EKL Compact, vibration absorption, simple 0.5 à 1100 Nm manuel
EK6 Compact, vibration absorption, simple 1950 à 12500 Nm manuel

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