Dwyer Instruments SERIES P1 Catalog Page
1/4 NPT
1/2
[12.7]
4-1/8 [104.78]
®
SERIES P1
BRASS FLOW SWITCH
FLOW
Fixed Set points, Flow Rates from 0.10 to 1.5 GPM
The Series P1 Brass Flow Switch utilizes a piston-type design for accurate detection
of excessive or insufcient liquid ow rates. The switches have preset actuation points
from 0.10 to 1.5 GPM for liquid ow.
FEATURES/BENEFITS
• Piston-type operation yields accurate detection of low ow rates
• The piston magnetically actuates a hermetically sealed SPST reed switch
APPLICATIONS
• Industrial cleaning equipment
• Detecting loss of uid in hydraulic systems
• Assuring proper coolant ow in semiconductor processing
MODEL CHART
Model Actuation Set Point* GPM (LPM)
P1-011
P1-012
P1-013
P1-014
P1-015
P1-016
*Calibrated for water at standard conditions.
0.10 (.38)
0.25 (.95)
0.50 (1.89)
0.75 (2.84)
1.00 (3.79)
1.50 (5.68)
1/2 NPT
1
[25.4]
[1/4 TYP]
2-3/8 [60.33]
1/2
[12.7]
1-1/4
27/32
[31.75]
[21.43]
SPECIFICATIONS
Service: Compatible liquids.
Wetted Materials: Housing: Brass; Piston: Polysulfone; Spring: 316 SS; O-ring:
Fluoroelastomer; Other: Epoxy.
Temperature Limits: -20 to 225°F (-29 to 107°C).
Pressure Limits: 1000 psig (68.9 bar).
Accuracy: ±10% of set point.
Repeatability: ±1%.
Switch Type: SPDT.
Electrical Rating: .17 A @ 120 VAC, .08 A @ 240 VAC, .13 A @ 120 VDC, .06 A @
240 VDC.
Electrical Connection: 18 AWG, 24˝ (60.96 cm), polymeric lead wires.
Process Connection: 1/4˝ female NPT.
Mounting Orientation: Any position. Set points shown are based on vertical, inlet
down position.
Required Filtration: 50 microns or better.
Weight: 0.66 Ib (301 g).
Agency Approvals: CE.
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
1/4 NPT
2X [Ø9/32]
[Ø7.14]
[6.35 TYP]
1
[25.4]
1-3/4
[44.45]
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