Digital rotating paddle with Atex certification

The MBA800 electronic, digital rotating paddle series is based on innovative stepper motor technology. The torque and thus the sensitivity of the device are variably adjustable. Other parameters that influence each other - for example the rotational speed, change in the direction of rotation or the switching time - are grouped in freely selectable parameter combinations. The patented series of devices is maintenance-free, wear-free and is not sensitive to vibrations.

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  • Universal use

    The device offers maximum application versatility, regardless of the bulk material properties.

  • Stepper motor drive

    Direct drive without gearbox, return spring or leaf spring; the slip clutch is a functional component of the stepper motor.

  • Individualization

    Switching behavior, speed and change in the direction of rotation can be adjusted as parameter sets; sensitivity of the device is separately adjustable, and therefore wing size freely selectable.

  • User-friendliness

    Presetting of the mutually influencing parameters in 8 parameter sets facilitates adaptation to the application; device head removable from the process connection.

  • Combination with angle arm

    Suitable for the horizontal installation in silos. Shaft and paddle are protected from falling bulk material by the solid rooftop of the angle arm. 


Stepper motor technology has proven its worth in the space industry and long-term tests in the automotive industry since all functional parameters can be adjusted. Speed or tripping time, change in the direction of rotation or signal delay are just a few of these parameters. The device can be easily and quickly adapted to any application. The individual presets of the parameter sets are freely selectable in 8 different steps.

The device series angle arm is complemented by the semi rotating paddle MBA801 and can thus be used in even more special applications in bulk materials.

Infographic MBA800 rotating paddle


The operating instructions are available in the following languages:
German, English, French and Spanish

You can find the certificates of conformity in our download area.

Technical Data

  • Explosion protection certified according to ATEX 14/34/EU
  • Available with 24 VDC; 115 V - 230 VAC
  • Wing size freely selectable


Product configurator

Product selection made easy: find the right device for your application.

Exceptional measurement tasks

We offer tailor-made solutions perfectly fitted to your special tasks.

Individual application solutions

We would be glad to develop individual applications for your requirements.

Requests for 3D drawings

Please ask here for our 3D drawings for your field of application.


Would you like to know more about our company or our products? We would be glad to help you with any questions concerning the topic of measuring technology. We look forward to receiving your call or your message and we will get back to you as soon as possible.

T +49 4106 / 123 88 - 80
F +49 4106 / 123 88 - 89