SERIES PFT PADDLEWHEEL FLOW SENSOR
The Dwyer Series-PFT Paddlewheel Flowmeters are insertion-style sensors used to monitor liquid flow rates in pipes from 1-1/2″ to 40″ by outputting either a frequency proportional pulse or a 4 to 20 mA signal. They are designed for durability and versatility in water-based applications.
- Long product life even in applications with particulate due to bearings and shaft that offer excellent wear protection
- Use in irrigation applications with weatherproof and submersible ratings
- Save time and inventory with one unit that is adjustable over a large pipe size range
- Application versatility with a variety of wetted material selections
- Reduce need for additional external components with integral 4-20 mA output
- Eliminate concerns regarding magnetic material in flow due to sensor technology, which uses inductive sensing and no magnets
Specifications
SERIES PFT PADDLEWHEEL FLOW SENSOR
Service: Water-based fluids.
Range: 1.2 to 25 ft/s (0.37 to 7.62 m/s).
Wetted Materials: Body and fitting: Brass or 316 SS; Fitting O-ring: FKM standard, Silicone or Buna-N optional; Impeller: 316 SS; Shaft: tungsten carbide standard or 316 SS optional; Bearing: PTFE standard.
Linearity: ±1.0% of FS.
Repeatability: ±0.5% of FS.
Temperature Limits: -40 to 212°F (-40 to 100°C).
Pressure Limits: 400 psig (27.6 bar) @ 100°F (37.8°C), 325 psig (22.4 bar) @ 212°F (100°C). Process Connection: 1-1/2″ NPT male standard, 2″ NPT male optional.
Output: Pulse: NPN open collector with square wave output, rated 60 V @ 50 mA maximum. Frequency: 3.2 to 200 Hz. Pulse Width: 2.5 msec ±25%. 4 to 20 mA: 4 mA is 0 ft/s, 20 mA is 25 ft/s.
Power Requirement: 10 to 35 VDC.
Power Consumption: 40 mA (max).
Electrical Connection: 22 AWG shielded UL type PTLC rated 105°C, 20′ (6.1 m) long with cable gland. Can be extended up to 2000′ (609 m) with similar cable. Optional UL listed burial rated cable.
Enclosure Rating: NEMA 6P (IP67) *.
Housing Materials: Brass or 316 SS.
Weight: 3 lb. (1.36 kg).
Compliance: CE.*Brass units IP67 only.
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