Flow Switch Diaphragm Type Flow Switch IFW5 Series The flow switch, IFW series is used for detection and confirmation of the flow as a relaying device for the general water applications in some various equipment such as cooling water fixture in the industrial machinery.  Low flow setting possible (1 L/min) Diaphragm type flow switch Body size With neon light (110 VAC, Red) With neon light (110 VAC, Green) With neon light (220 VAC, Red) Model Body size Set flow rate Note) 10 10 L/min type 1 to 10 L/min 20 20 L/min type 10 to 20 L/min 50  Simple flow setting Without removing the cover, you can set with a screwdriver from the outside. With neon light (220 VAC, Green) Note) 6 Note) With LED light (24 VDC, Green) Note) LED light is available for 5, 6, 7, 8 (with terminal box for 24 VDC). Note) Operating pressure: 0.2 MPa or less Port size Without terminal box (Contact: 1ab) With terminal box (Contact: 1a) With terminal box (Contact: 1b) With terminal box (24 VDC, + COM, Contact: 1b) With terminal box (24 VDC, + COM, Contact: 1a) 7Note) With terminal box (24 VDC, – COM, Contact: 1b) 8Note) With terminal box (24 VDC, – COM, Contact: 1a) Note) Terminal box for 24 VDC is available for 5, 6 (LED light). Specifications Water/Non-corrosive liquid ∗ Operating pressure Water resistance Operating temperature range Operation Insulation resistance Diaphragm type 100 MΩ or more (500 VDC measured via megohmmeter) Withstand voltage Port size About the use of ∗, please confirm SMC. Body material in contact with fluid

Flow Switch Diaphragm Type Flow Switch Micro Switch Ratings Non inductive load (A) Voltage Load resistance Light load Inductive load Flow range Max. flow (L/min) (L/min) Motor load Hysteresis (L/min) Note) Hysteresis is the flow rate that is necessary for moving the microswitch from the operation position (ON signal) to the return position (OFF signal). Flow Rate Characteristics Construction/Working Principle Operating lever Gear Protection diaphragm Micro switch Flow setting indication lever Flow rate (L/min) Operating lever Adjusting gear Flow rate (L/min) Component Parts Working Principle...

IFW5 Series Dimensions IFW50--00 to 04 (Without terminal box) With neon light With neon light

Flow Switch Diaphragm Type Flow Switch Dimensions IFW50--55 to 86 (With light, Terminal box for 24 VDC) PFM PFMB PFMC PFMV PF2A PF3W LFE PF2D IF

IFW5 Series Internal Wiring Diagram Color of lead wire Normally Open Normally Closed Color of lead wire Normally Open Normally Closed Color of lead wire Power supply (Common) Terminal (Relay terminal) Power supply (Light terminal) Color of lead wire Power supply (Common) Terminal (Relay terminal) White Power supply (Light terminal) Color of lead wire Power supply (Common) Terminal (Relay terminal) Power supply (Light terminal) Color of lead wire Power supply (Common) Power supply (Light terminal) 1. Mount a switch, so that the liquid flow is in the same direction as that of the arrow on the body....