Datasheet
Specifications (Integrated Display)
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 mPa·s [3 cP] or less. Refer to the list of applicable fluids on page 24.
Note 2) When 0.5 s is selected for the response time of the switch output, the repeatability becomes 3% F.S.
Note 3) Operating pressure range and proof pressure change according to the fluid temperature. Refer to the graph below.
Note 4) Cleared by turning off the power supply. It is possible to select the function to memorize it. (Every 2 or 5 minutes) When 5 minutes memorizing is
selected, the lifetime of the memory element (electronic part) is 1 million times (5 minutes x 1 million times = 5 million minutes = Approx. 9.5 years
for 24 hour energizing). Calculate the lifetime based on your operating conditions before using the memorizing function, and do not exceed it.
Note 5) The response time when the set value is 90% in relation to the step input.
Note 6) The response time until the set value reaches 90% in relation to the step input.
Note 7) Refer to “Wetted Parts Construction” on page 14 for details.
Model
PF3W711
Applicable fluid
Detection method
Rated flow range
Display flow range
Set flow range
Minimum setting unit
Conversion of accumulated pulse
Fluid temperature
Display unit
Accuracy
Repeatability
Temperature characteristics
Operating pressure range
Note 3)
Proof pressure
Note 3)
Pressure loss
Accumulated flow range
Note 4)
Switch output
Analog output
Hysteresis
External input
Display method
Indicator light
Power supply voltage
Current consumption
Environment
Standards and regulations
Wetted parts material
Note 7)
Piping port size
Weight
Maximum load current
Maximum applied voltage
Internal voltage drop
Response time
Note 2), 5)
Output protection
Output mode
Response time
Note 6)
Voltage output
Current output
Enclosure
Operating temperature range
Operating humidity range
Withstand voltage
Insulation resistance
Without lead wire with connector
With lead wire with connector
Water and ethylene glycol aqueous solution (with viscosity of 3 mPa·s [3 cP] or less)
Note 1)
Karman vortex
0 to 70C (with no freezing and condensation)
Instantaneous flow rate: L/min, Accumulated flow: L, Display values updated 5 times per second
Display value: 3% F.S. Analog output: 3% F.S.
2% F.S.
Note 2)
5% F.S. (25C reference)
0 to 1 MPa
1 MPa
45 kPa or less at the maximum flow
999999999 L
By 1 L
NPN or PNP open collector output
80 mA
28 VDC
NPN: 1 V or less (at 80 mA load current) PNP: 1.5 V or less (at 80 mA load current)
0.5 s/1 s/2 s
Short circuit protection
Select from hysteresis mode, window comparator mode, accumulated output mode, or accumulated pulse output mode.
0.5 s/1 s/2 s (linked with the switch output)
Voltage output: 1 to 5 V Output impedance: 1 k
Output current: 4 to 20 mA Max. load impedance: 300 for 12 VDC, 600 for 24 VDC
Variable
Voltage free input: 0.4 V or less (Reed or Solid state), input for 30 ms or longer
2-screen display (Main screen: 4-digit, 7-segment, 2-color, Red/Green Sub screen: 6-digit, 11-segment, White)
Output 1, Output 2: Orange
12 to 24 VDC 10%
50 mA or less
IP65
0 to 50°C (with no freezing and condensation)
Operation, Storage: 35 to 85% R.H. (with no condensation)
1000 VAC for 1 minute between terminals and housing
50 M or more (500 VDC measured via megohmmeter) between terminals and housing
CE marking, UL (CSA), RoHS
PPS, FKM, CPVC
Non-grease
10 to 100 L/min
7 to 140 L/min
1 L/min
1 L/pulse
25A
285 g
370 g
Flow rate
7 to 140 L/min
(Flow under 7 L/min is displayed as “0”)
PF3W721
30 to 250 L/min
20 to 350 L/min
2 L/min
2 L/pulse
30A
340 g
425 g
20 to 350 L/min
(Flow under 20 L/min is displayed as “0”)
Flow rate/Analog output
Voltage output
Current output
1 V
4 mA
A
1.4 V
5.6 mA
B
1.5 V
5.9 mA
11 21
5 V
20 mA
C
PF3W711/511
PF3W721/521
10
30
Minimum
Model
Rated flow [L/min]
100
250
Maximum
Analog Output
Operating Pressure/Proof Pressure
PF3W711/721/511/521 (for PVC Piping)
0
1
0
Fluid temperature [C]
Max. operating pressure [MPa]
60 70 80 90
40 5020 3010
0.2
0.4
0.6
0.8
1.2
0
Output
Minimum
rated flow
Maximum
rated flow
Flow rate
A
C
B
Refer to “Handling Precautions for SMC Products” for Flow Switch Precautions and
the Operation Manual in our website for Specific Product Precautions.
3-Color Display Digital Flow Switch for Water
PF3W
3-Color Display Digital Flow Switch for PVC Piping
PF3W
3-Color Display Digital Flow Monitor for Water
PF3W3
Function
Details
12
Digital Flow Switch for PVC Piping
Series PF3W
3-color display