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3-Color Display Digital Flow Switch For Water PF3W Series

Volume Discount

SMC

[Features]
· Supports 3-color / 2-screen display.
· 40% smaller than the previous model.
· Reduces piping space.
· Operating fluid temperature: 0 to 90°C.
· Rotatable display: Counterclockwise 90° / Clockwise 225°.
· Compatible with ethylene glycol aqueous solution.
· Non-grease specification.
· Added flow rate measurement of 250 L/min.
· Indicator function.
· Connector reduces wiring labor hours.

(i)Caution

Refer to the manufacturer's catalog for specification and material details.
CAD data is not available for some model numbers.
Product images may be representative. Please refer to the manufacturer's catalog for shape details.

Part Number

Configured Part Number is shown.

Product Specifications
Part Numbers
Catalog

Drawing

Integrated display type: PF3W704/720/740/711/721

Separate sensor unit: PF3W504/520/540/511/521

Integrated display type / with temperature sensor: PF3W704/720/740/711/721-□-□T

Separate sensor unit / with temperature sensor: PF3W504/520/540/511/521-□-□T

Integrated display type / with flow rate adjustment valve: PF3W704S/720S/740S

Separate sensor unit / with flow rate adjustment valve: PF3W504S/520S/540S

Integrated display type / with temperature sensor and flow rate adjustment valve: PF3W704S/720S/740S-□-□T

3-color display, digital flow switch for water, PF3W series, integrated display type / with temperature sensor and flow rate adjustment valve: PF3W704S/720S/740S-□-□T drawing

Separate sensor unit / with temperature sensor and flow rate adjustment valve: PF3W504S/520S/540S-□-□T

3-color display, digital flow switch for water, PF3W series, separate sensor unit / with temperature sensor and flow rate adjustment valve: PF3W504S/520S/540S-□-□T drawing

Lead with ZS-40-A/M8 connector

3-color display, digital flow switch for water, PF3W series, ZS-40-A / lead with M8 connector, drawing

*1) This is a lead with a 4-wire M8 connector used in the PF3 W series.

Product Specifications

Part number				PF3W704	PF3W720	PF3W740	PF3W711	PF3W721
Compatible fluid				Water and ethylene glycol aqueous solution (viscosity 3 mPa·s [3cP] or less)^*1)
Detection method				Karman vortex type
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 rate range				0.35 to 5.50 L/min (Displayed as 0.00 for less than 0.35 L/min)	1.7 to 22.0 L/min (Displayed as 0.0 for less than 1.7 L/min)	3.5 to 55.0 L/min (Displayed as 0.0 for less than 3.5 L/min)	7 to 140 L/min (Displayed as 0 if less than 7 L/min)	20 to 350 L/min (Displayed as 0 if less than 20 L/min)
Set flow rate range				0.35 to 5.50 L/min	1.7 to 22.0 L/min	3.5 to 55.0 L/min	7 to 140 L/min	20 to 350 L/min
Minimum setting unit				0.01 L/min	0.1 L/min		1 L/min	2 L/min
Converted value of accumulated pulse (Pulse width = 50 ms)				0.05 L/pulse	0.1 L/pulse	0.5 L/pulse	1 L/pulse	2 L/pulse
Operating fluid temperature				0 to 90°C (No freezing and condensation)				0 to 70°C (No freezing and condensation)
Display unit				Instantaneous flow rate L/min, accumulated flow rate 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 range^*3)				0 to 1 MPa
Pressure resistance^*3)				1.5 MPa
Pressure loss (When there is no flow rate adjustment valve)				45 kPa or less at the maximum flow rate				60 kPa or less at the maximum flow rate
Accumulated flow rate range^*4)				99999999.9 L		999999999 L
Accumulated flow rate range^*4)				In 0.1 L increments	In 0.5 L increments	In 1 L increments
Switch output		—		NPN or PNP open collector output
		Maximum load current		80 mA
		Maximum applied voltage		28 V DC
		Internal voltage drop		NPN: 1 V or less (at load current 80 mA), PNP: 1.5 V or Less (at load current 80 mA)
		Response time^2) 5)		0.5 s / 1 s / 2 s
		Output protection		Short circuit protection
		Output mode	Flow rate	Select From Hysteresis Mode, Wind Comparator Mode, Accumulated Output Mode, Accumulated Pulse Output Mode
		Output mode	Temperature	Select from Hysteresis Mode or Wind Comparator Mode
Analog output		Response time^*6)		0.5 s / 1 s / 2 s (Links with switch output)
		Voltage output		Output Voltage: 1 to 5 V output impedance: 1 kΩ
		Current output		Output current: 4 to 20 mA maximum load impedance: 300 Ω at 12 V DC, 600 Ω at 24 V DC
Hysteresis				Variable
External input				Dry input: 0.4 V or less (contact or non-contact), input 30 ms or more
Display method				2-screen display (first 4 digits 7 segments, 2-color display, red/green, last 6 digits 11 segments, white), Display update cycle 5 times/sec
Operation indicator light				Output 1, output 2: Orange
Power supply voltage				DC12 to 24 V±10%
Current consumption				50 mA or less
Environmental resistance		Protective structure		IP65
		Operating temperature range		0 to 50°C (No freezing and condensation)
		Operating humidity range		Operating/stored: 35 to 85% R.H. (no dew condensation allowed)
		Withstand voltag^*7)		1,000 V AC for 1 min. between terminals and housing
		Insulation resistance		50 MΩ or more (with 500 V DC insulation resistance tester) between live parts and housing
Certification, standards, etc.				CE marking, UL (CSA), RoHS
Wetted parts material				PPS,SUS304,FKM,SCS13
Wetted parts material				Lubrication-free specification
Piping diameter^*8)				3/8	3/8,1/2	1/2,3/4	3/4,1	1 1/4,1 1/2
W eight	No temperature sensor / no flow rate adjustment valve			210 g	260 g	410 g	720 g	890 g
	With temperature sensor / no flow rate adjustment valve			285 g	335 g	530 g	860 g	1,075 g
	No temperature sensor / with flow rate adjustment valve			310 g	360 g	610 g	—	—
	With temperature sensor / with flow rate adjustment valve			385 g	435 g	730 g	—	—
	When there is a lead with a connector			+85 g

*1) Measurement is possible if the fluid does not corrode the wetted parts and the viscosity is 3 mPa·s [3cP] or less. Please note that depending on the type of fluid, the internal packing may shrink or swell, causing water leakage.
*2) When 0.5 s is selected for the response time of the switch output, the repeatability is ±3% F.S.
*3) The operating pressure range and pressure resistance change depending on the fluid temperature. Please refer to the graph on p. 8.
*4) Clear when the power supply is turned off. It is possible to select the hold function.
      (Selectable at 2-minute intervals or 5-minute intervals)
      If you select the 5-minute interval, the lifespan of the storage element (electronic component) is limited to 1 million times (5 minutes × 1 million times = 5 million minutes = approx. 9.5 years when energized for 24 hours), so if you use the hold function, please use it within the lifespan after calculating the lifespan from the usage conditions.
*5) Response time when the set value is set to 90% for the step input.
      (In the case of temperature sensor output, it will be 7 s.)
*6) Response time until the value reaches 90% for the step input.
      (In the case of analog output of the temperature sensor, it will be 7 s.)
*7) 250 V AC with a temperature sensor.
*8) If the pipe diameter or pipe flow path is narrowed, the specifications may not be satisfied.
*9) Although the manufacturer is making efforts to improve the quality, products with slight scratches, stains, display color, uneven luminance, etc., on the external appearance that do not affect the performance are considered to be good products.

Product Specifications

Part number			PF3W504	PF3W520	PF3W540	PF3W511	PF3W521
Compatible fluid			Water and ethylene glycol aqueous solution (viscosity 3 mPa·s [3cP] or less)^*1)
Detection method			Karman vortex type
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
Operating fluid temperature			0 to 90°C (No freezing and condensation)				0 to 70°C (No freezing and condensation)
Accuracy			±3%F.S.
Repeatability			±2%F.S.
Temperature characteristics			±5%F.S. (25°C standard)
Operating pressure range^*2)			0 to 1 MPa^*2)
Pressure resistance^*2)			1.5 MPa
Pressure loss (When there is no flow rate adjustment valve)			45 kPa or less at maximum flow rate				60 kPa or less at maximum flow rate
Analog output		Response time^*3)	1 s
		Voltage output	Output Voltage: 1 to 5 V output impedance: 1 kΩ
		Current output	Output current: 4 to 20 mA maximum load impedance: 300 Ω at 12 V DC, 600 Ω at 24 V DC
Operation indicator light			For power supply check, flow rate indicator (blinking speed changes according to flow rate), other error display
Power supply voltage			DC12 to 24 V±10%
Current consumption			30 mA or less
Environmental resistance		Protective structure	IP65
		Operating temperature range	0 to 50°C (No freezing and condensation)
		Operating humidity range	Operating/stored: 35 to 85%R.H. (no dew condensation allowed)
		Withstand voltage^*4)	1,000 V AC for 1 min. between terminals and housing
		Insulation resistance	50 MΩ or more (with 500 V DC insulation resistance tester) between live parts and housing
Certification, standards, etc.			CE marking, UL (CSA), RoHS
Wetted parts material			PPS,SUS304,FKM,SCS13
Wetted parts material			Lubrication-free specification
Piping diameter^*5)			3/8	3/8,1/2	1/2,3/4	3/4,1	1 1/4,1 1/2
W eight	No temperature sensor / no flow rate adjustment valve		195 g	245 g	395 g	705 g	875 g
	With temperature sensor / no flow rate adjustment valve		270 g	320 g	515 g	840 g	1,060 g
	No temperature sensor / with flow rate adjustment valve		295 g	345 g	595 g	—	—
	With temperature sensor / with flow rate adjustment valve		370 g	415 g	715 g	—	—
	When there is a lead with a connector		+85 g

*1) Measurement is possible if the fluid does not corrode the wetted parts and the viscosity is 3 mPa·s [3cP] or less. Please note that depending on the type of fluid, the internal packing may shrink or swell, causing water leakage.
*2) The operating pressure range and pressure resistance change depending on the fluid temperature. Please refer to the graph below.
*3) Response time until the value reaches 90% for the step input.
(In the case of analog output of the temperature sensor, it will be 7 s.)
*4) 250 V AC with a temperature sensor.
*5) If the pipe diameter or pipe flow path is narrowed, the specifications may not be satisfied.
*6) Although the manufacturer is making efforts to improve the quality, products with slight scratches, stains, display color, uneven luminance, etc., on the external appearance that do not affect the performance are considered to be good products.

Product Specifications

Conductor	Nominal cross-sectional area	AWG23
Conductor	Outer Diameter	Approx. 0.7 mm
Insulator	Materials	Heat-resistant PVC
	Outer Diameter	Approx. 1.1 mm
	Hue	Brown / white / black / blue
Sheath	Materials	Heat and oil resistant PVC
Overall Diameter		⌀4

Standard table

PF3W5□/PF3W7□

With temperature sensor: PF3W5□/PF3W7□

With flow rate adjustment valve: PF3W5□/PF3W7□

With temperature sensor and flow rate adjustment valve: PF3W5□S/PF3W7□S

: 30; 45; 60

Part Number
PF3W704-03-A-M
PF3W720-03-A-M
PF3W720-04-A-MR
PF3W720-04-DT-MR
PF3W740-04-DT-M

Minimum order quantity	Volume Discount	Days to Ship	Flow Range (L/min)	Output Method	Analog Output Specification	Plumbing Thread Nominal	Pressure Resistant (MPa)	Operating Temperature Range (℃)	Operating Humidity Range (%)	Bracket	Temperature Sensors	Rating Flow Range (L/min)	Analog Current Output (mA)
1 Piece(s)	Available	Quote	to less than 10	NPN Open Collector	-	[3/8] 3/8	-	-	-	None	Without temperature sensor	0.5 to 4	None
1 Piece(s)	Available	Quote	10～Less than 50	NPN Open Collector	-	[3/8] 3/8	1.5	0～50	35～85	None	Without temperature sensor	2 to 16	None
1 Piece(s)	Available	Quote	10～Less than 50	NPN Open Collector	-	[1/2] 1/2	1.5	0～50	35～85	With Bracket	Without temperature sensor	2 to 16	None
1 Piece(s)	Available	3 Days	10～Less than 50	NPN Open Collector / Analog	Current	[1/2] 1/2	1.5	-	35～85	With Bracket	With temperature sensor	2 to 16	4 to 20
1 Piece(s)	Available	Quote	10～Less than 50	NPN Open Collector / Analog	Current	[1/2] 1/2	-	-	-	None	With temperature sensor	5 to 40	4 to 20

Basic Information

Type	Flow Switch for Water	Fluid Type	Water	Sensor, Monitor Structure	Display Integrated
Pipe Port Type	Female Thread	Plumbing Thread Type	Rc	Pressure Type	Standard
Flow Rate Type	Standard	Number of Input Points	1	Number of Output Points	2
Power Supply Type	DC	Power Supply Voltage(V)	12 to 24 ±10%	Pipe Connection Direction	2-way
Body Material	Resin + Metal	Mounting Holes	Presence	Display	Digital
Lamp	Presence	Acquired Standards	CE	IP	IP65
Lead Wire	Lead wire with M8 connector available (3 m)	Calibration Certificate included	Without calibration certificate	Flow rate control valve	None
Unit Specifications (Instantaneous Flow Rate)	L/min	Unit Specifications (Integrated Flow Rate)	L	Unit Specifications (Temperature)	°C
Custom-made Specifications	None	Output Specification	None

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Specification/Dimensions

Flow Range(L/min)
- to less than 10
- 10～Less than 50
Clear
Analog Output Specification
- Current
Clear
Plumbing Thread Nominal
- 3/8
  - 3/8
- 1/2
  - 1/2
Clear
Bracket
- None
- With Bracket
Clear
Temperature Sensors
- With temperature sensor
- Without temperature sensor
Clear
Rating Flow Range(L/min)
0.5 to 4

2 to 16

5 to 40
Clear
Analog Current Output(mA)
- 4 to 20
- None
Clear
type
- PF3W7□
Clear
Output Method
- NPN Open Collector
- Analog
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

3 Days or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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3-Color Display Digital Flow Switch For Water PF3W Series

(i)Caution

Drawing

Integrated display type: PF3W704/720/740/711/721

Separate sensor unit: PF3W504/520/540/511/521

Integrated display type / with temperature sensor: PF3W704/720/740/711/721-□-□T

Separate sensor unit / with temperature sensor: PF3W504/520/540/511/521-□-□T

Integrated display type / with flow rate adjustment valve: PF3W704S/720S/740S

Separate sensor unit / with flow rate adjustment valve: PF3W504S/520S/540S

Integrated display type / with temperature sensor and flow rate adjustment valve: PF3W704S/720S/740S-□-□T

Separate sensor unit / with temperature sensor and flow rate adjustment valve: PF3W504S/520S/540S-□-□T

Lead with ZS-40-A/M8 connector

Product Specifications

Product Specifications

Product Specifications

Product Specifications

Standard table

PF3W5□/PF3W7□

With temperature sensor: PF3W5□/PF3W7□

With flow rate adjustment valve: PF3W5□/PF3W7□

With temperature sensor and flow rate adjustment valve: PF3W5□S/PF3W7□S

Basic Information

Configure

Specification/Dimensions

Flow Range(L/min)

Analog Output Specification

Plumbing Thread Nominal

Bracket

Temperature Sensors

Rating Flow Range(L/min)

Analog Current Output(mA)

type

Output Method

CAD

Days to Ship

Specify Alterations

Additional Products in this Category

Tech Support

About This Website

About MISUMI Corporation

Contact us Monday to Friday: 8:00 am to 6:00 pm (Mexico City time)