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

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

Available versions

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

Standard version

Version with base plate

Connector pins

Options and accessories

measuring ranges

23 extensions as standard, specific extensions on request

Coding

DRVLA-B-C-D-E-F

• 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

Cables

• Model AK12.4F: 12 wires, shielded, length: 2.5m, 5m or 10m, open-end
• Model AK12.4DF: 12 wires, double shielded, length: 2.5m, 5m or 10m, open-end
• Model AK12.4: 12 wires, shielded, length: 2.5m, 5m or 10m, connector
• Model AK12.4D: 12 wires, double shielded, length: 2.5m, 5m or 10m, connector

Couplings