Datasheet

4 l/min
Set the flow within the rated flow range.
The set flow range is the range of flow rate that is possible in setting.
The rated flow range is the range that satisfies the sensor’s specifications (accuracy, etc.).
Although it is possible to set a value outside the rated flow range, the specifications will not be guaranteed even if the value stays within
the set flow range.
Caution
Set Flow Range and Rated Flow Range
Rated flow range
Display flow range
Set flow range
∗ In the case of the PF3W5 series, the displayable and settable ranges are the same as the PF3W3 series flow monitor.
Sensor
Flow range
0.5 l/min 2 l/min 5 l/min
20 l/min
40 l/min
100 l/min 140 l/min
PF3W704
PF3W504
PF3W720
PF3W520
PF3W740
PF3W540
PF3W711
PF3W511
0.5 l/min
2 l/min
5 l/min
3.5 l/min
3.5 l/min
1.7 l/min
1.7 l/min
0.35 l/min
0.35 l/min
5.5 l/min
5.5 l/min
16 l/min
22 l/min
22 l/min
40 l/min
55 l/min
55 l/min
10 l/min
7 l/min
7 l/min
100 l/min
140 l/min
140 l/min
Series
PF3W
Specific Product Precautions 3
Be sure to read before handling.
Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products”
(M-E03-3) and the Operation Manual for Flow Switch Precautions. Please download it
via our website. http://www.smcworld.com
Caution
Mounting
Caution
Wiring
Wiring
Caution
1. Connecting sensor lead wire and connector
• Cut the sensor lead wire as shown below.
• Insert each lead wire into the corresponding connector number
by following the chart provided below.
2. Inserting/detaching of sensor connector, power
supply/output connector
• Insert each connector straightforwardly until it clicks and
locks onto the body.
• To remove the connector, pull it straight out while pushing
the lever with your thumb.
1. The front face of the panel mount conforms to IP65,
however there is a possibility of liquid infiltration if
the panel mount adapter is not installed securely
and properly. Securely fix the adapter with screws
as shown below. Screw tightening torque differs
depending on the panel material used, so it is not
possible to give a specific recommended value.
Mount so that the product does not damage.
Tighten screws 1/4 to 1/2 turn after the heads are flush with
the panel.
• Make sure that the numbers on the connector and the wire
colours match. After verifying that the wires are fully inserted,
temporarily hold A down by hand.
• Using pliers, press the center of A straight down.
• Note that that connector cannot be taken apart for reuse once it
is crimped. Use a new sensor connector if wiring or lead wire
insertion is done incorrectly.
Brown (DC+)
White (Temperature sensor 1 to 5 V input)
Blue (DC–)
Black (Flow rate sensor 1 to 5 V input)
1
2
3
4
Lead wire colour
Connector no.
Sensor connector
Power supply/
output connector
Lever
20 mm or more
A
 Digital Flow Monitor/Series PF3W3
Front protective cover + Panel mount adapter
Mounting screw (M3 x 8 L)
(accessory)
Panel mount adapter
Front protective cover
Panel
NC/IN
Power supply/output connection lead wire
1
2
3
4
5
Pin no.
Grey
White
Black
Blue
Brown
2 m
Lever
Sensor connector
Waterproof seal
(accessory)
Not used (Do not
connect anything
to this part.)
Series
PF3W
Specific Product Precautions 4
Be sure to read before handling.
Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products”
(M-E03-3) and the Operation Manual for Flow Switch Precautions. Please download it
via our website. http://www.smcworld.com
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