Dwyer Series PFT paddlewheel flow sensor

Click2Contact

The Series PFT is a paddlewheel flow sensor used to monitor liquid flow rates in pipes from 1½ to 40″ with just one size-adjustable sensor. Multiple wetted material choices offer application versatility. The product is suitable for monitoring water flow rates in irrigation systems and building automation cooling systems.

The device uses inductive sensing to sense the blades of the impeller as they rotate. The 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: pulse or 4 to 20 mA. The pulse models have 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 0 m/s and 20 mA equal to 7.6 m/s. There are no external components needed to have the 4 to 20 mA output. Paddlewheel, shaft and bearings are easily field replaceable.

The product’s bearings and shaft offer good wear protection, even in applications with particulate for long life. The sensor is weatherproof and submersible rated for irrigation applications; it is also suitable for groundwater remediation, cooling systems, pump protection, leak detection and filtration systems.