series pft insertion paddle wheel flow sensor
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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
PFT Flow Transmitter
Insertion Paddlewheel
Transmitter
A square wave output
signal is generated with
frequency proportional
to flow velocity
Features
Bearings and shaft offer
excellent wear protection
even in applications with
particulate for long life
Weatherproof and
submersible rated for
irrigation applications
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
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
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
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
Specifications
Output: NPN open collector with 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
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
Basic Models
Model Description List Price
PFT-IDN-B111-S Brass Body $360.00
PFT-IDN-S111-S 316 SS Body $535.00
Options
2” NPT connection
Burial rated cable
Extended cable
Other wetted materials
Soon to come:
4 to 20 mA linear output
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
Cooling Loop
Applications
Irrigation
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
Applications
Irrigation
Golf courses, football
fields, farming,
business parks
Applications
Fertigation
Monitor flow rate for
addition of fertilizer
with irrigation water
Applications
General industry flow rates
Pump proving
Leak detection
Flow rate monitoring
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: www.dwyer-inst.com
E-mail: info@dwyer-inst.com
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