Dwyer Insertion paddlewheel flow sensor, 4-20 mA output

The Series PFT is a paddlewheel flow sensor used to monitor liquid flow rates in pipes from 1-1/2 to 40" with just one size adjustable sensor. Multiple wetted material choices offer application versatility. The PFT is ideal for monitoring water flow rates in irrigation systems and building automation cooling systems.

The PFT uses inductive sensing to sense the blades of the impeller as they rotate. Sensor technology does not use magnets allowing low flow rate monitoring and no concerns with magnetic material in the flow. Two output choices are available in the PFT, pulse or 4 to 20 mA. The pulse models are a square wave output signal with frequency proportional to the flow velocity. The 4 to 20 mA models have a linear output of the velocity with 4 mA equal to 1.2 ft/s and 20 mA equal to 25 ft/s. There are no external components needed to have the 4 to 20 mA output unlike other competitor products. Paddlewheel, shaft and bearings are easily field replaceable.