Dwyer Instruments PFT series insertion paddle wheel flowmeters are used to monitor liquid flow rates in pipes from 1 1\/2 Inch to 40 Inch. The unit outputs a frequency proportional pulsed or 4 mA to 20 mA output. The pulse models are a square wave output signal with frequency proportional to the flow velocity. The 4 mA to 20 mA models have a linear output with 4 mA equal to 0 m\/s and 20 mA equal to 7.62 m\/s.Media Monitored = LiquidDevice Type = Paddle Wheel Flow SensorMinimum Flow Rate = 0.37 m\/sMaximum Flow Rate = 7.62 m\/sSupply Voltage = 10 - 35 V dcPipe Diameter Range = 1-1\/2 inConnection Type = 1-1\/2 NPT MaleMaximum Pressure = 27.6barMaterial = BrassMaximum Media Temperature = +37.8°C