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Specifications
Model
Applicable fluid
Fluid
Fluid temperature
Detection method
Rated flow range
Set point range *
Flow
Smallest settable
increment
Accumulated volume per pulse
(Pulse width = 50 ms)
Accumulated value hold function
Rated pressure range
Proof pressure
Pressure
Pressure loss
Pressure characteristics
Power supply voltage
Electrical
Current consumption
Protection
Display accuracy *
Analog output accuracy
Accuracy
Repeatability
Temperature characteristics
Effects of connecting modular products
Output type
Output mode
Switch operation
Max. load current
Switch output
Max. applied voltage (NPN only)
Internal voltage drop (Residual voltage)
Response time
Hysteresis
*
8
Protection
Output type
Analog output *
9
Impedance
Response time
Input type
External input *
12
Input mode
Input time
Reference condition
Unit *
14
Display range *
Display
Minimum
display unit
Display
Indicator LED
Enclosure
Withstand voltage
Environmental
Insulation resistance
resistance
Operating temperature range
Operating humidity range
Standards
Piping
Piping specification
Main materials of parts in contact with fluid
Length of lead wire with connector
Body
Weight
Lead wire with connector
1 Air quality grade is JIS B 8392-1:2012 [4:6:-] and ISO 8573-1:2010 [4:6:-].
*2 Set point range will change according to the setting of the zero cut-off function.
*3 When using the accumulated value hold function, use the operating conditions to calculate the product life,
and do not exceed it. The maximum update limit of the memory device is 1.5 million times. If the product is
operated 24 hours per day, the product life will be as follows:
· 5 min interval: life is calculated as 5 min x 1.5 million = 7.5 million min = 14.3 years
· 2 min interval: life is calculated as 2 min x 1.5 million = 3 million min = 5.7 years
If the accumulated value external reset is repeatedly used, the product life will be
shorter than the calculated life.
*4 When the pressure range is 1.0 to 1.5 MPa, the pressure characteristics will be ±5% F.S. (standard pres-
sure is 0.5 MPa). Do not release the OUT side piping port of the product to the atmosphere without con-
necting piping. If the product is used with the piping port released to atmosphere, accuracy may vary.
*5 The time from when the flow is changed by a step input (when the flow rate changes from 0 to
the maximum value of the rated flow range instantaneously) until the switch output turns ON (or
OFF) when set to be 90% of the rated flow rate
*6 If the flow fluctuates around the set value, the width for setting more than the fluctuating
width needs to be set. Otherwise, chattering will occur.
3-Color Display
1
*
Instantaneous flow
2
Accumulated flow
Instantaneous flow
Accumulated flow
*
3
*
4
5
*
5
*
6
NPN output type: 1 V or less (at load current of 80 mA), PNP output type: 2 V or less (at load current of 80 mA)
*
7
Voltage output
Current output
*
11
*
13
Instantaneous flow
Accumulated flow
Instantaneous flow
15
(Flow under 10 L/min is displayed as "0")
Accumulated flow
*
16
Instantaneous flow
Accumulated flow
Modular Type
Digital Flow Switch
For flow switch precautions and specific product precautions,
refer to the "Operation Manual" on the SMC website.
PF3A701H
Thermal type (Bypass flow type)
10 to 1000 L/min
10 to 1050 L/min
0 to 999,999,999,990 L
1 L/min
Select from 10 L/pulse or 100 L/pulse.
Intervals of 2 or 5 minutes can be selected.
Refer to the "Pressure Loss" graph on page 24.
±5.0% F.S. (0 to 1.0 MPa, 0.5 MPa standard)
24 VDC ±10%
150 mA or less
Polarity protection
±5.0% F.S. (Ambient temperature of 0 to 50°C, 25°C standard)
NPN open collector, PNP open collector
Select from Instantaneous output (Hysteresis mode or Window comparator mode),
Accumulated output, or Accumulated pulse output.
Select from Normal or Reversed output.
Select from 1 s, 2 s, or 5 s.
Variable from 0
Over current protection
Voltage output: 1 to 5 V (0 to 10 V can be selected *
Output impedance: Approx. 1 kΩ
Maximum load impedance: 600 Ω, Minimum load impedance: 50 Ω
Linked to the response time of the switch output
No-voltage input: 0.4 V or less
Select from Accumulated value external reset or Peak/Bottom value reset.
30 ms or longer
Select from Standard conditions or Normal conditions.
L/min, CFM (ft
0 to 1050 L/min
0 to 999,999,999,990 L
1 L/min
LCD, 2-screen display (Main screen/Sub screen)
Main screen: Red/Green, Sub screen: Orange
Main screen: 4 digits, 7 segment, Sub screen: 6 digits, 7 segment
OUT indicator: Red LED is ON when output is ON
1000 VAC for 1 minute between terminals and housing
50 MΩ (500 VDC measured via megohmmeter) between terminals and housing
Operating: 0 to 50°C, Stored: −10 to 60°C (No freezing or condensation)
Operating/Stored: 35 to 85% RH (No condensation)
CE marking (EMC Directive, RoHS Directive)
Modular (Body size: 30)
Stainless steel 304, Aluminum alloy, PPS, HNBR
[Sensor: Pt, Au, Ni, Fe, Lead glass (exempted from the RoHS application), Al
350 g
*7 Analog output or external input can be selected by pressing the buttons. Refer to the
graph for analog output.
*8 When selecting 0 to 10 V, refer to the analog output graph for the allowable load current.
*9 The time from when the flow is changed by a step input (when the flow rate changes
from 0 to the maximum value of the rated flow range instantaneously) until the analog
output reaches 90% of the rated flow rate
*10 Analog output or external input can be selected by pressing the buttons.
*11 The flow rate given in the specifications is the value under standard conditions.
*12 Setting is only possible for models with the units selection function.
*13 Display range will change according to the setting of the zero cut-off function.
*14 The accumulated flow display is the upper 6-digit and lower 6-digit (total of 12 digits)
display. When the upper digits are displayed, x 10
* 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.
PF3A7
w
PF3A702H
Air, Nitrogen
0 to 50°C
20 to 2000 L/min
20 to 2100 L/min
2 L/min
10 L
0 to 1.0 MPa
1.5 MPa
±3.0% F.S.
±3.0% F.S.
±1.0% F.S.
±5.0% F.S.
80 mA
28 VDC
10
), Current output: 4 to 20 mA
3
/min)
L, ft
3
0 to 2100 L/min
(Flow under 20 L/min is displayed as "0")
2 L/min
10 L
IP65
Modular (Body size: 40)
3 m
400 g
+90 g
lights up.
6
H
Series
O
]
2
3
18
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