Dwyer P3 - Manual

In-Line Flow Switches
P3 Series
Installation
All NPT threads should be installed using a suitable
thread sealant (Teflon tape or Permatex “No more
Leaks”). Sealant must be kept out of unit during
installation. Ten diameters of straight run piping are
recommended upstream and downstream of the flow
sensor.
P3 Flow Switches Can be Mounted In
Various Positions
Flow settings are based on a vertical
position (inlet port down), using water at
+70°F on increasing flow. Some variation
in set point actuation will occur in other
mounting orientations.
Wiring Diagram
Normally Open
Switch Ratings
Contact rating: 10W
Switching Voltage (DC or AC Peak): 200 Max.
Switching Current (DC or AC): 0.4 A Max.
Carry Current (DC or AC): 0.4 A Max.
Break down Voltage: 230 VDC Min.
0 1 2 3 4 5 6 7 8
16
14
12
10
8
6
4
2
0
PSI Drop
Pressure Drop - Typical
Flow Rate - GPM
Specifications
Wetted Materials
Housing, End Fitting
Piston
Spring
O-Ring
Oper. Pressure, Max.
Operating Temperature
Required Filtration
Set Point Accuracy
Set Point Differential
Switch, See “Switch Ratings”
Inlet / Outlet
Electrical Termination
Hydrolytically Stable Glass Reinforced Polypropylene
PPS Composite
316 Stainless Steel
Fluorocarbon
200 PSI at 70°F, 100 PSI at 212°F
-20°F to +212°F (100°C)
100 Micron or Better
±20%, Maximum
20% Maximum
SPST, 10 VA
3/8” NPT Male or Quick Connect
No. 24 AWG, 24” to 26” Polymeric Leads
Inlet
Body
Spring
End Fitting
Outlet