Series PFT
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Series PFT






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Series PFT Presentation Transcript

  • 1. PFT Insertion Paddle Wheel Flow Sensor
    The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes. Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2011 Dwyer Instruments, Inc
  • 2. PFT Flow Transmitter
    Insertion Paddlewheel Transmitter
    A square wave output signal is generated with frequency proportional to flow velocity
  • 3. Features
    Bearings and shaft offer excellent wear protection even in applications with particulate for long life
    Weatherproof and submersible rated for irrigation applications
  • 4. Features
    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
    Paddlewheel, shaft and bearings are easily field replaceable
  • 5. Features
    Fits pipes from .038 to 1.016 m with just one size adjustable sensor
    Unit extends according to pipe size it is used in
  • 6. Specifications
    Service: Water-based fluids
    Range: 0.37 to 7.62 m/s
    Wetted Materials: Body and fitting: brass or 316SS; fitting o-ring: FKM standard, silicone or Buna-N optional; impeller: 316 SS; shaft: 316 SS standard or tungsten carbide optional; bearing: PTFE; polysulfone.
    Linearity: ± 1.0% of full range
  • 7. Specifications
    Repeatability: ±0.5% of full range
    Temperature Limits: -40 to 100°C
    Pressure Limits: 27.6 bar @ 37.8 °C, 22.4 bar @ 100°C
    Process Connection: 1-½” NPT male standard, 2” NPT male optional
  • 8. Specifications
    Output: NPN open collectorwith square wave output. 60V @ 50 mA maximum
    Frequency: 3.2 to 200 Hz
    Pulse Width: 2.5 msec ±25%
    Power Requirement: 10 to 35 VDC
  • 9. Specifications
    Electrical Connection: 22 AWG shielded UL type PTLC rated 105°C, 6.1 m long with cable gland. Can be extended up to 609 m with similar cable. Optional UL listed burial rated cable.
    Enclosure Rating: IP67 (Submersible)
    Housing Materials: Brass or 316 SS
    Weight: 1.81 kg
    Agency Approvals: CE
  • 10. Basic Models
  • 11. Options
    2” NPT connection
    Burial rated cable
    Extended cable
    Other wetted materials
    Soon to come:
    4 to 20 mA linear output
    Hot tap installation
  • 12. Applications
    Building Automation
    Monitoring of chilled water supply and return in the building or chiller plant
    Can be used for thermal flow calculations with controller or building system
  • 13. Cooling Loop
  • 14. Applications
    Monitor flow rate in water lines
    Leak detection
    Even small leaks can create erosion, property damage, and waste expensive water
    A 4” line can dispense 100,000 gallons per hour
    Signal to controller to close valve in the line
  • 15. Applications
    Golf courses, football fields, farming, business parks
  • 16. Applications
    Monitor flow rate for addition of fertilizer with irrigation water
  • 17. Applications
    General industry flow rates
    Pump proving
    Leak detection
    Flow rate monitoring
  • 18. Questions
    To order a free catalog or for more information contact;
    Dwyer Instruments, Inc., P.O. Box 373,
    Michigan City, IN., 46361
    Telephone: (800) 872-9141 or (219) 879-8000
    Fax: (219) 872-9057
    Internet address: