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PF3W Series 3-Color Display Digital Flow Switch for Water

1. PF3W is a digital flow sensor that constantly monitors water or coolant flow.

2. PF3W refreshes the design and operating performance of the legacy PF2W model. The body is up to 40% smaller in volume and requires shorter straight piping for improved installation flexibility.The upgraded 2-screen, 3-color numerical display rotates in both CW and CCW directions, offering improved visibility in a range of orientations.
3. Two outputs are available, including two switch signals, or a switch and analog signal.
4. Options include a mounting bracket, flow adjustment valve, and temperature sensor to monitor flow and temperature simultaneously.
5. PF3W is grease-free, IP65 rated, and C-UL-US, CE and RoHS compliant.

Model:
PF3W
Brand:
VPC Pneumatic
Code:
8481804090

Working medium:	Water, Ethylene glycol aqueous solution
Working temperature:	0 to 90°C
Proof pressure:	1.5MPa
Accuracy:	Display value: ±3% F.S. Analog output: ±3% F.S.
Availability:



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Product Specification

■ Product Feature

1. 3-color/2-screen display.

2. Integrated display type, Separate monitor type, and PVC piping type.

3. Reduced required piping space.

4. Rotatable display: Counterclockwise 90°, Clockwise 225°. Display can be rotated in increments of 45° to suit the installation conditions.

5. Easy operation, improved visibility. New model PF3W721-14- -M. (Flow rate set from 20-350L/min).

smc pf3w

pf3w flow sensor

Product Description

Model		PF3W704	PF3W720	PF3W740	PF3W711	PF3W721
Working medium		Water and ethylene glycol aqueous solution (with viscosity of 3mPa·s [3 cP] or less)
Detection method		Karman vortex
Rated flow range		0.5 to 4 L/min	2 to 16 L/min	5 to 40 L/min	10 to 100 L/min	50 to 250 L/min
Display flow range *¹⁾		0.35 to 5.5 L/min	1.7 to 22.0 L/min	3.5 to 55.0 L/min	7 to 140.0 L/min	20 to 350.0 L/min
Set flow range		0.35 to 5.5 L/min	1.7 to 22.0 L/min	3.5 to 55.0 L/min	7 to 140.0 L/min	20 to 350.0 L/min
Smallest settable increment		0.01 L/min	0.1 L/min	0.1 L/min	1 L/min	2 L/min
Conversion of accumulated pulse (Pulse width: 50ms)		0.05 L/pulse	0.1 L/pulse	0.5 L/pulse	1 L/pulse	2 L/pulse
Fluid temperature		0 to 90°C (No freezing or condensation)				0 to 70°C (No freezing or condensation)
Display unit		Instantaneous flow: L/min, Accumulated flow: L
Accuracy		Display value: ±3% F.S. Analog output: ±3% F.S.
Repeatability		±2% F.S. *²⁾
Temperature characteristics		±5% F.S. (25°C standard)
Operating pressure		0 to 1 MPa
Proof pressure		1.5 MPa
Pressure loss (Without flow adjustment valve)		45 kPa or less at the maximum flow				60 kPa or less at the maximum flow
Accumulated flow range *³⁾		99999999.9 L		999999999 L
		By 0.1 L	By 0.5 L	By 1 L
Switch output		NPN or PNP open collector output
Max. load current		80 mA
Max. applied voltage		DC 28 V
Internal voltage drop		NPN: 1 V or less (at load current of 80 mA); PNP: 1.5 V or less (at load current of 80 mA)
Response time *^2),4)		0.5 s / 1 s / 2 s
Output protection		Short-circuit protection
Output mode	Flow rate	Select from Hysteresis, Window comparator, Accumulated output, or Accumulated pulse output modes.
	Temperature	Select from Hysteresis mode or Window comparator mode
Analog output	Response time *⁵⁾	0.5 s / 1 s / 2 s (linked with the switch output)
	Voltage output	Output voltage: 1 to 5 V; Output impedance: 1 kΩ
	Current output	Output current: 4 to 20 mA; Max. load impedance: 300 Ω for DC 12 V, 600 Ω for DC 24 V
Hysteresis		Variable
External input		Voltage free input: 0.4 V or less (Reed or Solid state), input for 30 ms or longer
Display method		2-screen display (Main screen: 4-digit, 7-segment, 2-color; Red/Green Sub screen: 6-digit, 11-segment, White)
Indicator light		Output 1, Output 2: Orange
Power supply voltage		DC 12 to 24 V ±10%
Current consumption		50 mA or less
Environment	Enclosure	IP65
	Working temperature	0 to 50°C (No freezing or condensation)
	Working humidity	Operation, Storage: 35 to 85% R.H. (No condensation)
	Withstand voltage *⁶⁾	AC 1000 V for 1 minute between terminals and housing
	Insulation resistance	50 MΩ or more (DC 500 V measured via megohmmeter) between terminals and housing
Standards and regulations		CE marking (EMC directive/RoHS directive), UL (CSA)
Wetted parts material		PPS, FKM, SCS13, SUS304; Non-grease
Piping port size *⁷⁾		3/8	3/8, 1/2	1/2, 3/4	3/4, 1	1 1/4, 1 1/2

*1) When the actual ﬂow rate is less than the minimum display ﬂow range , the display will show "0.00 ", "0.0 " or "0 ".

*2) If 0.5s is selected for the response time of the switch output , the repeatability will be ±3% F.S.

*3) Cleared when the power supply is turned oﬀ. The hold function can be selected. (Intervals of 2 or 5 minutes can be selected.) If the 5-minute interval is selected , the life of the memory element (electronic parts) is limited to 1 million times .(If energized for 24 hours , life is calculated as 5 minutes ×1 million = 5 million minutes = about 9 .5 years .)

Therefore , if using the hold function , calculate the memory life for your operating conditions , and use within this life .

*4) The response time when the set value is 90% in relation to the step input (The response time is 7 s when it is output by the temperature sensor.)

*5) The response time until the set value reaches 90% in relation to the step input (The response time is 7 s when it is analog output by the temperature sensor.)

*6) With a temperature sensor, the withstand voltage is 250 VAC.

*7) When the piping diameter or piping passage is restricted , the speciﬁcations may not be satisﬁed.

*8) Products with tiny scratches , marks , or display color or brightness variations which do not aﬀect the performance of the product are veriﬁed as conforming products .

■ Options/Part No .

When only optional parts are required , order with the part numbers listed below.

Description	Part NO.	Qty.	Note
Bracket*	ZS-40-K	1	For PF3W704/720/504/520	With 4 tapping screws (3×8)
	ZS-40-L	1	For PF3W740/540	With 4 tapping screws (3×8)
	ZS-40-M	1	For PF3W711/511	With 4 tapping screws (4×10)
Lead wire with M8 connector	ZS-40-A	Lead wire length: 3m