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Paddlewheel flow sensor: Series PFT DWYER

Non-Magnetic Sensing, Insertion Style for 1-1/2 to 40" Pipe, Pulse or 4 to 20 mA

Application

  • Irrigation
  • Ground water remediation
  • Cooling systems
  • Pump protection
  • Leak detection
  • Filtration systems
PFT catalog PFT IOM +(84) 839 606 568

The SERIES PFT Insertion Paddlewheel Flowmeters are used to monitor liquid flow rates in pipes from 1-1/2 to 40″ and is available in brass or 316 SS body.

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Specification

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).
Agency Approvals:CE. *Brass units IP67 only.

Feature

  • Bearings and shaft offer excellent wear protection even in applications with particulate for long life
  • Weatherproof and submersible rated for irrigation applications
  • One unit adjustable over a large pipe size range
  • Multiple wetted material choices offer application versatility
  • Integral 4-20 mA output with no need for additional external components
  • Sensor technology uses inductive sensing to sense the blades of the impeller therefore does not use magnets allowing low flow rate monitoring with no concerns regarding magnetic material in the flow

Posted by Tuan

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