Series BFM Bulk Flow Monitor

Product Applications

  • Oil Spray Systems
  • Discharge Chutes
  • Distributors
  • Screw Conveyors
  • Drag Conveyors
  • Water Systems
  • Air Systems
  • Pneumatic Systems
  • Gravity Feed Systems
  • Slurry Systems
  • Chemical Processing
  • Food Processing
  • Rotary Drums


Series BFM Bulk Flow Monitor provides effective monitoring for most flow/no flow conditions in pipes and chutes. It’s sensing techniques, which use a Piezo element, makes the BFM versatile for most flow/no flow applications.

The BFM Control offers many unique advance features that exceed the industry standards. The BFM Central Processing Unit monitors movement of almost anything through a pipe or chute system. The BFM is ideal for sensing the presence or absence of materials in Pneumatic Conveying Systems. The BFM offers adjustable sensitivity depending on the application demand. Also, it provides easy installation and requires no maintenance. The unit has LED indicators — flow (green)/no flow (red).

The BFS-1 Sensor yields many advance features. It externally mounts to the outside of the pipe or chute. It provides mounting tabs for easy installation. The Sensor is prewired with 3′ wire.



ServiceSolids and liquids
Power Requirement120 VAC, 220 VAC or 12 VDC.
Power Consumption1 A.
Temperature Limits120°F (48.9°C).
OutputRelay: SPDT rated 4 A @ 125/250 VAC, 1/10 HP @ 125/250 VAC, 3 A @ 30 VDC. TTL: 0-5 V.
Serial CommunicationsRS-232.
Electrical ConnectionScrew terminal
Conduit ConnectionKnockouts (four 3/4″ for power, six 1/2″ for sensor and outputs).
Enclosure RatingNEMA 4.
Weight3 lbs (1.36 kg).


Pipe Size1/2″ to 60″ (1.27 to 152.4 cm).
Enclosure RatingNEMA 4X (IP66).
Electrical Connection3′ (0.9 m) of 18 gage wire.
Temperature Limits155°F (68.3°C).
MaterialsPVC Type 1 Grade 1 Grey.
Weight5 oz (141.8 g).