Gems Sensors & Controls, introduces the RFO type of the RotorFlow Series of fluid flow sensors. RFO stands for “RotorFlow Output”, and is designed for flow rate monitoring or metering applications. RotorFlow RFO type sensors provide a pulsed DC voltage output that is proportional to the rate of flow. The 4.5 to 24VDC pulsed output is easily integrated into most digital logic units. What makes RotorFlow sensors unique is the highly visible paddlewheel that provides verification at a glance to confirm that fluids are moving. Typical applications for RotorFlow RFO type sensors include water purification, dispensing systems, chemical metering, laser and welders, semiconductor processing, water injection systems, and chillers and heat exchangers.