“Maihak” rotating paddle measure-indicator
MBA 2.2/3.2 – "Maihak" rotating paddle measure-indicator for granulate, dust or sludge
MBA 2.2/3.2 – "Maihak" rotating paddle measure-indicator for granulate, dust or sludge

The MBA2.2 and MBA3.2 devices are ATEX-certified rotary paddle level indicators, which are used in dust explosion zones 20 with gas explosion zone 1 and impress with their robust design. The MBA2.2 (vertical version) as well as the MBA3.2 (horizontal version) are particularly suitable for measuring the limits of granulate, dust or sludge. A measuring paddle is driven by a synchronous geared motor, which stops as soon as it is covered by filling material. A reduction in the fill level releases the rotating paddle.



  • Stability

    Device head IP 65 made of extremely robust gray cast iron, MBA3.2: angle bracket reinforced by additional ribs

  • Flexibility

    2 speed versions; different supply voltages; MBA2.2 also with flexible steel cable shaft or with protective tube; optional with angled flange


Both the MBA2.2 and MBA3.2 level indicators have ATEX certification for Zone 20 and Zone 1, making them your safe choice in areas where there is a risk of explosion from dust and gases.

The typical application areas of the MBA2.2 and MBA3.2 are therefore silos and containers, which contain bulk solids that evaporate combustible gases or vapors, e.g. wood shavings containing glue or paint, plastic granules, chemical products or sewage sludge.

Technical Data

  • Pressure stages up to PN 16
  • Operating temperatures up to 350°C
  • Both device versions have ATEX approval for dust explosion zone 20 (II 1/2 D IP 65 T) and gas explosion zone 1 (II 2G Ex de IIC / IIB T1 / T2 / T3)

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.


Are you interested in our ? We would be pleased to send you further information for your application. Please contact us by phone or make a non-binding product inquiry via our contact form.

Phone +49 4106/123 88-80
Fax +49 4106/123 88-89

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