Dwyer Instruments SERIES PDWS, SERIES PWF Catalog Page
RE
®
SERIES PDWS & PWF
PADDLEWHEEL FLOW SENSOR
Low Friction Bearings, Long Life, 1/2 to 8˝ Pipe (12.7 to 203 mm)
PWF-B-PXX PWF-S-BXX PWF-S-DXX PWF-T-SFT-SS
TAINING SLOT
[FOR U-CLIP]
O-RING
1-19/32
[40.64]
23/32
[18.43]
3-7/16
[87.45]
FLOW
The Series PDWS Insertion Paddlewheel Flowmeter is designed for pipe size
ranges from 1/2 to 8˝ with available materials of brass, stainless steel, PVC, and
polypropylene. The Series PDWS is intended to be used with the Series PWF, a
wide variety of custom tee, saddle, or welded ttings that come in bronze, PVC, and
stainless steel.
FEATURES/BENEFITS
• The bearings are made from ruby jewel to reduce the coefcient of friction and
maintain high accuracy
• PVC and polypropylene body material offers resistance against corrosive media
APPLICATIONS
• Industrial water & wastewater treatment
• Cooling water monitoring
• Industrial uid control
• Chemical proportioning
• Fluctuating uid conductivity applications
MODEL CHART
Example PDWS -1B -CRS PDWS-1B-CRS
Series PDWS Insertion paddlewheel owmeter
Size/
Material
Options CRS
Note: Need to purchase with Series PWF tting for proper installation.
MODEL CHART - TEE FITTING
Model Description
PWF-T-BFS
PWF-T-BFT
PWF-T-PME
PWF-T-CFT
PWF-T-SFT
-SS
-HP
1B
1S
1P
1Y
2B
2S
2P
2Y
Bronze/female sweat (for copper tubing)
Bronze/female thread
PVC/male stub end
Carbon steel/female thread
304 SS/female thread
All 316 SS option
High pressure option (SS or CS only)
1/2 to 3˝, brass
1/2 to 3˝, 316 SS
1/2 to 3˝, PVC
1/2 to 3˝, polypropylene
4 to 8˝, brass
4 to 8˝, 316 SS
4 to 8˝, PVC
4 to 8˝, polypropylene
Ceramic shaft
IMM
Immersible (urethane potted electrical connection)
FOR
Fluoroelastomer O-ring
HPO
High pressure options (Use with SS only)
PDWS-1XX
1/2˝ 3/4˝ 1˝ 1-1/2˝ 2˝ 3˝ 4˝
-0050 -0075 -0100 -0150 -0200 -0300 -0400
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SPECIFICATIONS
Service: Compatible clean liquids.
Range: 0.3 to 30 ft/s (0.09 to 9.14 m/s).
Wetted Materials: Sensor: Brass,
316 SS, PVC, or polypropylene;
Rotor: PVDF; Shaft: Nickel-bonded
tungsten carbide (ceramic optional);
Bearings: Ruby jewel; O-ring: EPDM
(uoroelastomer optional).
Accuracy: ±1.5% FS.
Temperature Limits: Brass, 316 SS:
200°F (93°C); PVC, Polypropylene:
130°F (55°C).
ACCESSORIES
Series Description
BAT
Blind analog transmitter; converts pulse output to 4-20 mA analog
output; unit is loop powered, ts on the enclosure of the meter, and
is eld spannable.
RTI2
Rate total indicator; converts pulse output to 4-20 mA analog output
with local ow rate and totalization display; unit is loop powered, can
t on the enclosure of the meter, and provides a high/low ow alarm.
PWD
Pulse divider, for use with pacing electronic metering pumps; unit
divides the input frequency to any number from 1 to 9999 with the
use of rotary switches to suit a number of metering pump inputs.
(See website)
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Pressure Limits: Brass: 200 psi (14
bar); 316 SS: 250 psi (17 bar); PVC,
polypropylene: 175 psi (12 bar) @ 75°F
(24°C); High pressure option: 400 psi (28
bar) (SS only).
Process Connection: See below.
Output: Current sinking, square wave
pulse, opto-isolated.
Power Requirements: 6-24 VDC, 2 mA
(max. 20 mA).
Electrical Connection: #22 AWG, 3
conductor, 18´ (5.5 m) cable (max. 2000´
run).
Enclosure Rating: NEMA 4X (IP66).
Weight: 2 lb (907 g).
Flow Transmitters, Paddlewheel,
Fixed Insertion
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MODEL CHART - SADDLE FITTING
Model Description
PWF-S-DXX
PWF-S-PXX
PWF-S-BXX
-LPS
MODEL CHART - WELD/BRAZE FITTING
Model Description
PWF-W-BXX
PWF-W-CXX
PWF-W-SXX
-HP
Example: PWF-T-CFT-0050-SS
To order an all 316 SS female thread 1/2˝ tee for Series PDWS-1XX
Paddlewheel Flow Meter.
Ductile iron
PVC
Bronze
Installed on 16˝ long pipe stub option (PVC only)
Bronze
Carbon steel
316 SS
High pressure option (SS or CS only)
PDWS-1XX PDWS-2XX
3˝ 4˝ 6˝ 8˝
-0300 -0400 -0600 -0800
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PDWS-1XX PDWS-2XX
3˝ 4˝ 6˝ 8˝
-0300 -0400 -0600 -0800
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USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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