NOn-contact measureing systems Customized technology from Melectric

Melectric is the only manufacturer on the market to offer three innovative technologies for non-contact measuring systems. These include torque measurement based on the magnetoelastic effect, non-contact measurement using near-field telemetry and radio-based measuring systems. Our aim is to develop customized solutions for your individual measuring tasks – from research and development to cost-efficient series solutions

Magnetoelastic measurement

Serientaugliche Drehmomentmessung von Melectric Systems magnetoelastisch
 
  • Measurement of Torque, Angle, Acceleration, Temperature
  • Can be used with selected
    ferromagnetic steel materials
  • Distance from shaft up to < 2 mm
  • sampling rates up to >25kHz

Longrange applications

  • distance from shaft up to 15 m
  • sampling rates up to 500 Hz
  • Developed for Mobile APP and much more.
  • Measurement of torque, bending, axial force, acceleration, angle, and more

Near-field telemetry

Telemetrie Gelenkwelle
  • Distances from 1 to 35 mm. Wireless power and data transmission.
  • Sampling rates up to 5 kHz. Research and laboratory applications for all types of materials
  • Measurement of torque, bending, axial force, acceleration, angle, and more

Magnetoelastic torque measurement Versatile, durable, robust

General Information:

  • Minimal radial space required
  • No additional components on the shaft
  • Full automized production process for Serial products
  • The signal is transmitted only via the magnetic field
  • Ferromagnetic shaft with defined heat treatment conditions might be necessary

Telemetry for non-contact torque measurement Flexible, easy application, highest precision

Telemetrie Gelenkwelle

General Information:

  • Minimal space required
  • Can be attached on all environments and material (e.g. steel, carbon fibre, AL, and further
  • Distances up to 35 mm for data and power transmission
  • Use our device with several sensors as strain gauges, acceleration, temperature or others. 
 

Long-range and Bluetooth solutions Precise torque measurement with wireless technology

General Information:

  • Minimal space required
  • Distances up to 15m for data transmission
  • Regular power supply or battery powered
  • Use our device with several sensors as strain gauges, acceleration, temperature or others.

Wide spectrum of possible applications

Our solution enables precise measurements to be taken within a high torque range, from 1 Nm to several thousand Nm. As no additional components are applied to the shaft itself, it is possible to take measurements at rotation speeds of up to 300,000 rpm. The measurement accuracy is typically 1% FS and the signal bandwidth is usually 1 to 2 kHz, but can be increased to over 25 kHz for customer-specific applications. In addition, the evaluation electronics makes it possible to measure additional data, such as temperature, acceleration, and rotation speed. MELECTRIC offers many different options in terms of both analogue and digital output signals (0-5 V, 0-10 V, 4-20 mA, CAN BUS, I2C, UART, Bluetooth,…).

Discover possible applications

A maintenance-free alternative to conventional torque measurement

The system is completely wear-free as a result of the contactless torque measurement. Even in the event of strong vibrations, impacts, weather effects and temperature fluctuations, it continues to deliver precise and reliable data, demonstrating that magnetoelastic torque measurement is both a robust and affordable alternative to mechanical torque measurement.

Angular misalignmentStrain gauges Magnetic (Melectric)
ContactlessYes, but a measurement can only be taken when the shaft is rotating No, or only with the aid of technical equipment, such as telemetry or slip ringsYes, without limitations
RigidityVery “soft” or elastic shaft required – problematic for dynamic control processes or applications that are sensitive to resonance Limited (dependent on torsional strain). The emission of signals in the frequency spectrum over 1.5 kHz is impededVery wide range of measurement body rigidities possible
SizeLength:diameter ratio of around 5:1 required = long axial design Inductive power supply and telemetry impede installation and require large application surfaces with respect to the measuring shaft Minimal installation space: axial shaft lengths < 20 mm; radial installation space for the electronics = 5 mm. High degree of flexibility in design of housing and shaft
System run-time/signal bandwidthTypically up to 0.5 kHzTypically up to 1.5 kHzTypically 1 – 2 kHz Special applications up to 25 kHz
Can be installed radiallyNoNoYes
Long-term stabilityYesThe bonded areas of the strain gauges can cause problems, especially if affected by the temperatureYes

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