Mechanical membrane switch

The MBA100 mechanical switch reliably measures the limit in free-flowing bulk materials such as granulates, powders or feedstuffs. By light pressure of the bulk material on the stainless steel membrane, a switching process is triggered – 950 grams is sufficient. A microswitch is activated, which triggers an electrical signal. The device itself does not require any current for its function.

Go to product configurator



  • Energy efficiency

    No power consumption in operation and no supply voltage

  • User-friendliness

    No calibration or adjustment required

  • Customization

    Various flange dimensions and materials possible, product-contacting parts made of stainless steel

  • Safety

    Avoidance of blockages in downpipes and bucket elevators


Be it an overfill signal on conveyor belts or transfer stations or securing against clogging in downpipes and bucket elevators, the MBA100 fulfills central tasks in the level measurement of free-flowing bulk solids.

The purely mechanical level indicator is particularly easy to handle. Neither adjustment nor calibration is necessary. A simple attachment to the silo flange using screws is sufficient to connect the signal cable and to operate the MBA100.

By using heat-resistant materials the MBA100 can withstand temperatures of up to 300° C: A distance pipe, an additional flange and a stainless steel sheet prevent the temperature inside the silo being transmitted to the device head.


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

Technical Data

  • Installation on the side or slightly inclined to 45°
  • Flush finish with container wall
  • Signaling by microswitch
  • Temperature resistant up to 300° C

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

* Your message will be treated confidential.