Technical selection
Specifications and configuration
Reference — SMC PF3W720-04-A
| Parameter | Documented value / configuration |
|---|---|
| Configuration and ports | PF3W720 integrated-display flow sensor; 04 = Rc 1/2 ports; A = NPN/NPN switching outputsConditions: scope: Official photograph label reads PF3W720-04-A; PDF defines suffix |
| Rated flow range | 2–16 L/min nominal rated flow rangeConditions: scope: For PF3W720 column; not the display or settable range |
| Medium and fluid temperature | Water or ethylene-glycol aqueous solution at viscosity below 3 mPa·s; fluid temperature 0–90 °C without freezing/condensationConditions: scope: Glycol measurement range depends on concentration/viscosity; check chart and calibration |
| Working and proof pressure | 0–1 MPa operating pressure; 1.5 MPa proof pressureConditions: scope: Proof is not continuous working pressure |
| Switching output | A output code = two NPN switching outputsConditions: scope: Confirm I/O wiring and cable suffix for purchase |
| Power and enclosure | 12–24 VDC ±10%; IP65 enclosureConditions: scope: See exact ordered electrical configuration |
| Listed wetted materials | PPS, SUS304, FKM and SCS13 listed for fluid-contact portions of PF3W seriesConditions: scope: Catalogue list for PF3W; confirm exact complete wetted bill of materials |
Manufacturer reference configuration. Values and conditions apply to the named reference; the supplied configuration requires separate confirmation.
Overview
This integrated-display PF3W720 monitors branch-water flow where local reading and switching signals are needed. The official photograph's front label identifies the pictured PF3W720-04-A configuration.
Construction and interfaces
The pictured sensor has two Rc 1/2 process ports, a digital display, mounting feet and an electrical lead. The KQG2 fitting data elsewhere in the catalogue do not apply to this sensor.
Selection
The PF3W720 column lists 2–16 L/min rated flow, with water or suitably low-viscosity ethylene-glycol aqueous solution. Verify the fluid mixture, calibration, straight-run requirement and port orientation.
Configuration options
The PF3W family also offers other flow ranges, port sizes, signal choices and optional temperature measurement. Each alternate suffix needs its own compatibility check; this image shows the A output form.
Application limits
The 1.5 MPa proof value is not the 0–1 MPa continuous operating range. The published wet-material list does not by itself validate every coolant additive or the complete installed piping assembly.
