Dwyer Instruments W.E. ANDERSON PFT Series Specifications-Installation And Operating Instructions

Series PFT Paddlewheel Flow Sensor
Specifications - Installation and Operating Instructions
By Dwyer
PFT-IAN-B111-S PFT-HDN-S611-S
shown with
A-PFT-HKIT-SS
The Series PFT Paddlewheel Flow Sensor is used to monitor liquid flow rates in
pipes from 1-1/2 to 40˝ (40-1016 mm). The unit has one size-adjustable sensor. A
square wave output signal is generated with frequency proportional to flow velocity.
OPERATING PRINCIPLE
The PFT uses inductive sensing to sense the blades of the impeller as they rotate.
The sensor technology is non-magnetic, allowing for low flow rate monitoring and
eliminating concerns regarding magnetic material in the process media.
MODEL CHART
Example PFT -I D N -B 1 1 1 -S -ST PFT-IDN-B111-S-ST
Series PFT
Style I
H
Output D
A
Approvals N
Body B
Material
S
Mounting 1
2
3
4
5
6
7
8
O-Ring 1
Material 2
3
Wetted
Materials
Electrical
Connection
Options
W.E. ANDERSON
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
PFT-HDN-B611-S
shown with
A-PFT-HKIT
Paddlewheel flow sensor
Insertion
Hot-tap insertion
600UA/40 MA 2.5 MS pulse
Analog 4-20 mA transmitter
None
Brass body
316 SST body
1-1/2˝ male NPT mounting
2˝ male NPT mounting
1-1/2˝ male BSPT mounting
2˝ male BSPT mounting
1-1/2˝ male NPT hot tap with
valve
1-1/2˝ male NPT hot tap without
valve
1-1/2˝ male BSPT hot tap with
valve
1-1/2˝male BSPT hot tap without
valve
FKM fluoroelastomer
Silicone (FDA approved)
Buna-N
1 Tungsten-carbide shaft, 316 SS
impeller, PTFE bearing
2 316 SS shaft, 316 SS impeller,
PTFE bearing
S 22 GA shielded wire, 20 ft (6.1 m)
B 18 GA UL listed burial rated, 4 ft
(1.2 m)
ST Stainless steel tag
A DIVISION OF
DWYER INSTRUMENTS, INC.
1/2˝ NPT
Ø2-1/2
[63.50]
3-13/16
[96.84]
2-25/64
[60.72]
1-1/2˝ NPT
2˝ HEX
[50.80]
SPECIFICATIONS
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 full range.
Repeatability: ±0.5% of full range.
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; Isolation
valve option available with 1-1/2˝ connection (model selectable).
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%. 4-20 mA: 4 mA
is 0 ft/s, 20 mA is 25 ft/s.
Power Requirement: 10-35 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.
Agency Approvals: CE.
*Brass units IP67 only.
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin F-PFT
19.500
MAX
7-29/32
[200.94]
Ø1.125
5.000
MAX
www.dwyer-inst.com
e-mail: info@dwyermail.com