Paddle Wheel Flow Sensors

Visual Flow Indicator – RFO/RFA Type With Continuous Output

The RFO/RFA flow indicator combines high visibility rotors with solid-state electronics that are packaged into compact, panel mounting housings. They provide accurate flow rate output with integral visual confirmation and an unprecedented price/performance ratio. The RFO has a pulsed DC output…

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About our Paddle Wheel Flow Sensors

The Gems Sensors RotorFlow paddle wheel flow sensors feature a bright orange rotor which is easily visible for manual checking of flow and this is combined with electronics which offer a highly accurate output based on a Hall-Effect sensor.   The RFO offers a square wave pulsed output while the RFA extends the package to offer a 0-10V output, both types are available in either polypropylene, brass or stainless steel construction.