SMC Corporation of America
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Series PF3W digital flow switch is perfect for applications requiring a constantly monitored flow of cooling or cleaning water. The PF3W series has been improved both in design and operating performance over the PF2W flow switch.  Depending on the selected model, the PF3W is up to 40% smaller in volume, offering improved piping space and flexibility.  Designed to work with fluids up to 90ºC

Series PF3W5-Z digital flow sensor constantly monitors water or coolant flow.  All "Z" models have redesigned piping adapters, imparting a significant weight reduction and slimmer profile, depending on flow range.  PF3W5 is the remote version without a display.  The lower profile body can be deployed in tighter locations that may be out of an operator's view.  Two LEDs are visible on the control

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3-color display Digital Flow Switch for Water Series PF3W RoHS How to Order Remote sensor unit Output specification/Temperature sensor Remote sensor unit/Unit printed on label Symbol Temperature oC Symbol OUT1 Flow rate OUT2 Temperature Temperature sensor 1 2 1T Instantaneous flow rate L/min L/min (gal/min) For how to order of remote monitor unit, refer to page 18. Nil Analog 1 to 5 V

Model PF3W504 PF3W520 PF3W511 PF3W540 PF3W521 Note 1) Refer to Measurable Range for Ethylene Glycol Aqueous Solution on page 6. Measurement can be performed with a fluid that does not corrode wetted parts and has viscosity of 3 mPas [3 cP] or less. Be aware that water leakage may happen due to internal seal shrinkage or swelling depending on kinds of fluid.

PF3W504 PF3W520 PF3W540 PF3W511 (Metal attachment) -36No.PF-OMN0010-J PF3W521 (Metal attachment) -37No.PF-OMN0010-J Vinyl chloride piping Fluid pressure has almost no effect. The straight piping length shall be 11 cm or longer in order to maintain 3%F.S. of the specification.