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The rotary paddle level indicator DF22 is used in most bulk solids for full-, empty or demand-detection within silos and bins. The individual sensor configuration with a large number of options and a lot of accessories enables an accurate adaptation to any specific application.


Product Features

  • ideal for silos with caking at the inner wall due to extended process connection up to 200 mm maximum length
  • unaffected by pressure, temperature, dust, caking, and conductivity of material
  • to be used in areas with potentially explosive dust atmospheres as well
  • versatile and universally applicable
  • fantastic price-performance-ratio
  • high reliability
  • continuous operation without maintenance
  • easy installation


Further information on ATEX


Supply voltage
230, 115, 48, 24 V AC / 48, 24, 12 V DC
Signal contact
1mA / 4V DC … 2A / 250V AC
change-over contact, potential-free
Bulk goods temperature
-25 °C ... +80 °C
Ambient temperature
-40 °C ... +70 °C
Process pressure
-1 bar … 10 bar
ATEX approval
Process connection
Threats, flange and more
Aluminium or stainless steel
Housing IP66
Aluminium or stainless steel
Extension (shaft and measuring blade)
Stainless steel
Sealing ring
Mounting position
Technical Data

The DF22 is a level limit switch with extended process connection for bulk goods such as powder, granulate, fine and coarse-grained. In different applications these DF22 indicates minimal or maximal fill levels reliably and precisely. Therefore it is used in many different industries:



Our level control indicators are named in business magazins as paddle switches, rotary paddel switches, point measurement devices, level sensor, level switch or level control.