Magnetic Sense Solutions
  • Logo_MagneticSense_Orange_CMYK_120px_60px
  • Products
      • Torque sensor
        • Torque sensor for e-bikes

        • Torque sensors

          Cost-efficient digital torque sensors in compact designs, for contactless and reliable measurement of moments in OEM applications.

          • Non-contact measurement on waves
          • Robust and insensitive sensors
          • Flexible OEM design
      • Force sensor
        • ULC01

        • Force sensors

          Flexible force sensors for contactless tension and pressure measurement, suitable for a large number of OEM applications, at economic prices.

          • Contactless measuring of forces
          • Economic prices
          • Robust and insensitive sensors
          • Flexible design for your OEM applications
  • Applications
    • AutomotiveAuto_150x150
    • e-MobilityDrehmomentsensor-eMobilitaet_150x150
    • Drive TechnologyDrehmomentsensor_Antriebstechnik
    • HydraulicDrehmomentsensor_Wiegetechnik
    • WeighingCraneliftsacontainerloadingatrain_150x150
  • Technology
      • Torque sensor composition
        • Explication of a standard sensor

        • The technology

          Magnetic Sense torque sensors and force sensors offer outstanding performance and reliability. The basis for this is our innovative technology and the modular design of our sensors.

      • Measuring conditions
        • Explication of a standard sensor

        • The technology

          Magnetic Sense sensors offer outstanding performance and reliability. The basis for this is our innovative technology and the modular design of our sensors.

      • Operating conditions
        • ULC02

        • The technology

          Magnetic Sense sensors offer outstanding performance and reliability. The basis for this is our innovative technology and the modular design of our sensors.

  • Service
    • Downloads
  • Company
      • About us
        • trafag_ag_eingang

        • About us

          Magnetic Sense is the new manufacturer of force and torque measurement sensors for OEM customers. Discover the revolution behind.

      • Team
        • team-(2)

        • Our team

          We would not be where we are today without our strong team of talented physicists, developers, engineers and our business team. With our innovative way of thinking combined with German engineering we face every customer-specific challenge.

      • Career

        • Career with us

          Become part of our team. We are looking for thought leaders, creative problem solvers, fearless decision makers.


      • Fairs & Events
        • Drehmomentsensoren-auf-Messen-und-Events

        • Fairs & Events

          Every year we present our latest products at various events and fairs. Visit us and take the opportunity for a personal conversation with us.

      • PR & Media
        • Drehmomenstsensor-Presse

        • PR & Media

          You need more information about our products, our technology or the company? No problem! We will gladly provide these. Contact us!

  • ISO Zertifikat Magnetic Sense
  • ISO Zertifikat Magnetic Sense Automotive
  • BLOG
  • Contact

    • Magnetic Sense GmbH

      Kelterstr. 59
      72669 Unterensingen
      Germany

      Tel. +49 7022 40590-0
      Fax +49 7022 40590-29

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  • EN (EN)

What types of force transducers/ force sensors are there?

The new magnetization technology revolutionizes measurement technology

The traditional force transducer or force sensor has the task of measuring a tensile force or compressive force. To this end, similar technology agreements have been available until now. All work on the principle of converting a mechanically induced material change into a measurable signal. A new technology, the so-called magnetostriction, is able to exclude the problems of the previous methods.

Applications for force transducers or force sensors

A revolution in this type of measurement technology has far-reaching consequences, considering the wide range of applications:

– Process control: For joining or riveting processes, the correct pressing pressure is of great importance for the proper functioning of the workpiece. The same applies in the pharmaceutical industry for the pressing of an active ingredient in tablet form.
– Process control: Conveyor belts in a production plant must maintain a constant belt tension.
– Test measurements: In production, test series are used to determine the correct prestressing force for a screw connection.
– Traffic engineering: Reaction moments in eddy current brakes or water vortex brakes, as well as the load capacity of a crane, must be measured.
– Biomechanical measurement: In medical diagnostics, hand pressure or impression are measured by sensors on the corresponding devices. Many scales operate on the same principle.

The traditional force transducer or force sensor has its drawbacks

The examples given illustrate the importance of technology, but also its difficulties. How to find the right configuration for these very different challenges? Strain gauges, or DMS for short, are a tried and tested method. This strain gage, conveniently designed and positioned, converts the force applied to it into a measurable signal. A first problem is to place the strain gage at the measuring point in a mechanically correct way. A second problem is how the sensor behaves under a long life load. If the characteristic curve of the sensor changes due to a changed mechanical coupling, the measurement becomes inaccurate. Therefore, many measuring devices must be maintained
and recalibrated until the measuring strips are no longer suitable at some point.

What happens to the measuring strips

Today, the conventional force sensor or force transducer evaporates mainly in polymers. These are applied to the corresponding measuring points with a special adhesive. Special adhesives must ensure the necessary mechanical coupling and must not be eroded. There are technical requirements under which adhesion is difficult and necessary, e.g. for the hardening of the adhesive, do not occur. But even if a measuring point can be installed, the measured value must be taken, resent and read. One attempt to avoid these problems is to build prefabricated complete modules that an end user can install in their entirety.

DMS application variant

The classic use of a DMS is not always practicable for many end users. Alternatively, strain gages and signal processing can be integrated into a carrier. This workpiece with its stretching and tensile properties defines the characteristic curves of a force sensor or force transducer. However, this complete package must also be mechanically coupled into an application. Such a force sensor or force transducer is screwed or welded. On the one hand, this is often complex, costly and also has an irritating effect on the accuracy of the sensor.

The revolution in force measurement: the inductive force sensor

In order to arrive at a completely new technology that avoids many of the disadvantages and difficulties mentioned above, it is necessary to take a decisive step: This is a step beyond the use of existing strain gauges in classical force transducers. How is this possible? Strain gages are replaced by a magnetic inductive force sensor. The use of this new technology is based on the principle of reverse magnetostriction. This means that the magnetic properties change at a measuring point under tensile or compressive load. These can be easily collected and recorded. In a first approximation, they represent the deformation or compression of the material. Magnetic changes are causal and in their order of magnitude are related to the force experienced by a material.

Magnetostrictive technology instead of strain gauges

The new force measurement technique represents a quantum leap: For the first time, it does not depend on the mechanical coupling to a measurement point, just like the other techniques described. This unit of measurement consists of a magnetostrictive waveguide and a variable position magnet. A pulse of induced current in the waveguide generates a circular magnetic field. If this strikes the magnetic field of the position magnet, a type of density wave is generated, which is detected by a special sensor. According to the time-of-flight principle, the time difference between the current pulse and the density wave serves as an indicator of the placement of the position magnet. In this way, a non-contact measurement is performed. These measurement methods are suitable for applications where strain gages reach their limits. This magnetostrictive method is safe, durable and maintenance-free and eliminates mechanical coupling problems.

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22. June 2021


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MAGNETIC SENSE GMBH

Kelterstraße 59 – 72669

Unterensingen – Deutschland

info@magnetic-sense.de

Tel: +49 (0) 7022 40590-0

Fax: +49 (0) 7022 40590-29

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