Diaphragm Level Switches

SMARTsaa offers Diaphragm / Membrane Level switch for measuring level of free flowing and dry material like food grains and powders and bulk goods.


  • Sensing clogging of material on screw conveyor
  • Boot level detection of bucket elevator
  • Detect level of food grain in hopper
  • Level detection for bulk goods
  • Detects bin overflow and maintain a pre-determined material level
  • Can be used as Chute Block Device


The pressure of the product on the membrane operates a limit switch inside the switch compartment. The contact of limit switch is used for control action.


  • Point level switch
  • Low cost but Reliable
  • No power supply required
  • Installation is simple.
  • Flush mount, non-intrusive
  • Ideally suited when vessel size or internal clearance is limited or where protrusion into a vessel is not acceptable
  • Over-Pressure Protection for screw conveyor


  • Enclosure : Cast Al, ABS Plastic, IP 40
  • O/P                    : 1 C/O relay contact rated for 10 Amp resistive at 230 V AC
  • Mounting : Flanged
  • Pressure for detection : Approx 2 N min. Normal Sensitivity: 60 gm
  • Operating Temp        : 10 – 80 degree Cent
  • Diaphragm Material : SS / Neoprene Rubber
  • Particle Size                : up to 30 mm and a density of 0.3 to 2.5 g/cm3


Material to be sensed, Particle size, Bulk Density, Mounting position (Dimensions and drawing of hopper), Diaphragm Material, Max. Operating Temp, Max. Operating Pressure