RotorFlow® Operating Principle


  1. As liquid passes through the RotorFlow® body, the magnetic rotor spins at a rate proportional to flow.  This causes a series of magnetic fields (the rotor vanes) to excite the Hall Effect sensor, producing a series of voltage pulses.
  2. The output pulses (RFO) are at the same voltage level as the input (4.5-24 VDC) with a frequency proportional to the flow rate.  The output signal can be utilized by digital rate meters totalizers or other electronic controllers.  RFA Type analog sensors condition the output signal to 0-10 VDC.
  3. RotorFlow® indicators may be mounted with flow entering either port.  Performance is optimized by positioning ports at the top of the unit, in a horizontal plane.