Digital Flow Sensor
Instruction Manual
PFM5
Series
URL http://www.smcworld.com
Specifications are subject to change without prior notice and any obligation on the
part of the manufacturer.
The descriptions of products shown in this document may be used by the other
companies as their trademarks.
© 2006 SMC Corporation All Rights Reserved
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Safety Instructions
The Digital Flow Sensor have in after referred to as flow sensor
and this manual contain essential information for the protection
of users and others from possible injury and property damage
and to ensure correct handling.
Please check that you fully understand the definition of the
following messages (signs) before going on to read the text, and
always follow the instructions.
Do not operate in an environment of inflammable, explosive
or corrosive gas.
Fire or an explosion can result.
This flow monitor is not an explosion proof type.
To avoid fire and explosion, Do not use the product for
flammable fluid.
IMPORTANT MESSAGES
Read this manual and follow its instructions. Signal words such
as WARNING, CAUTION and NOTE, will be followed by
important safety information that must be carefully reviewed.
Indicates a potentially hazardous situation
This flow sensor is designed for air. Only dry air, N2, CO2, Ar are
applicable.
Do not use this product near by a place where static
electricity is a problem.
Otherwise it can cause failure or malfunction of a system.
which could result in death or serious injury
if you do not follow instructions.
Indicates a potentially hazardous situation
which if not avoided, may result in minor
injury or moderate injury.
These instructions must be followed while in maintenance ;
Turn off the power supply, stop the supplied air, exhaust the
residual pressure and verify the release of air before
performing maintenance.
Gives you helpful information.
Otherwise it can cause injury.
To avoid electric shock, malfunction, and switch damage,
Do not touch live terminal nor connector.
Do not disassemble, modify (including change of printed
circuit board) or repair.
An injury or failure can result.
Do not operate outside of the specification.
Fire, malfunction or flow monitor damage can result.
Please use it after confirming the specification.
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3
Safety Instructions (continued)
NOTE
Follow the instructions given below when handling the flow
sensor. Otherwise, the flow sensor may be damaged or may
fail, thereby resulting in malfunction.
Perform proper functional checks and leak tests after
maintenance.
Stop operation when an abnormality is observed such that the flow
sensor does not work properly or there is a leakage of fluid.
• Make sure to use a sensor by the specified voltage.
• Make sure to use specified measurement flow and operating pressure.
Safety is not be assured due to unexpected malfunction.
When leakage occurred from other parts except piping, the flow sensor
might break.
Cut off power supply and stop supplying pressure. Don’t apply pressure
at leaking condition.
• Confirm the pressure loss at the sensor according to the flow
characteristic (Pressure loss) graph for designing piping.
• Prepare maintenance space.
• Do not drop or bump, or apply excess impact (490mm/s ).
2
• Do not pull the lead wire forcefully, not lift the product by pulling the
lead wire. (Tensile force 49N or less).
• Mount a sensor by observing the proper tightening torque.
• For piping of the flow sensor, hold the piping with spanner on the metal
part of the piping (Piping attachment).
• Install or connect the flow sensor so that the flow direction specified on
the label matches with actual flow direction.
• Pipe the flow sensor after eliminating dust in piping by air blow to avoid
failure and malfunction.
• Never mount a sensor in a place that will be used as a scaffold during
piping.
Precaution on Handling
Use UL approved product for direct current power supply.
1.Clamping voltage current circuit complies with UL508
Circuit which power supply if insulation transducer satisfying
following conditions
Max. voltage (No load) : 30Vrms (42.4V peak) or less
Max. current : (1) 8A or less (Including short circuit)
(2) When limited by the circuit
• Use dry air which complies with the quality grade of ISO 8573-1 1.1.2 to
1.6.2 : 2001.
• If the entering of foreign material to the fluid is possible, install and pipe
the filter or the mist separator to the inlet to avoid failure and
malfunction.
• Avoid repeatedly bending or stretching the lead wire.
• Wire correctly.
• Do not wire while the power is supplied.
• Do not wire in conjunction with power lines or high voltage lines.
• Confirm proper insulation of wiring.
protector (fuse etc.) with the ratings in the table
below.
Voltage without load (V peak)
0 to 20 [V]
Max. current rating (A)
5.0
Over 20 [V] up to 30 [V]
100/peak voltage
2.Circuit (of class 2) which is of 30Vrms (42.4V peak) or less with the
power supply unit of class 2 complying with UL1310 or transducer of
class 2 complying with UL1585.
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5
Safety Instructions (continued)
Names and Functions of Individual Parts
NOTE
• Wire as short as possible to avoid the affect of noise and surge.
• Never use in the presence of explosive gases.
• Do not use in an area where magnetic field is generated to avoid
malfunction of sensor.
Flow display
Power source display
Flow adjustment valve
Knurl
• Do not operate where the flow sensor is exposed to water.
• Do not use in an area containing oil or chemicals.
• Do not apply heat cycle to the flow sensor.
• Do not used in an area where surges are generated.
• Sensors are not equipped with surge protection against lightening.
• Do not use load generate surge voltage.
Piping port
Through hole
IN
Body
• Avoid foreign material such as wiring chips in the product.
• Avoid using sensors in an environment where the likelihood of
splashing or spraying of water, chemicals, and oil to avoid failure and
malfunction.
Power source display (green) : Turns on when power is supplied.
Flow display (green) : Flashing interval depends on the flow value.
As flow increases, flash interval is shortened.
The light turns to red when rated flow is exceeded.
Body : Flow sensor itself.
• Consider operating environment according to protection class.
2
• Do not mount the flow sensor where vibration (98m/s or less) and
2
impact (490m/s or less) do not exist to avoid failure and malfunction.
• Operation under low temperature (5 or less) leads to cause damage
or operation failure due to frozen moist in the fluid or air.
Flow adjustment valve : Orifice mechanism to abjust the flow.
Piping port : Connect port of piping.
• Do not short circuit the load.
Knurl : Used to fix the needle.
• Supply power when there is no flow.
Through hole : Used to mount the flow sensor on a DIN rail or a panel directly.
• The flow sensor is compulsory turned off for 3s after power supplied.
• Maintenance and inspection should be performed periodically.
• Analogue output may fluctuate by 2 to 3% for 10 minutes after
supplying power to the flow sensor.
• Do not poke inside a piping port with a stick.
• A flow rate of the flow sensor, which has a restrictor, may change if the
needle turns due to vibration.
• The accuracy may fluctuate by 2 to 3% if a customer removes or
replaces piping by themselves.
• When the product is fixed with a screw using the through hole, please
tighten it with a 0.3Nm ± 0.05 or less of tightening torque. (Excessive
tightening may break the product.)
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Model Indication Method
5
- -
-
PFM
-
Type
Model
5
Contente
Option2
Refer to the following table.
Separate type sensor part
Rated flow range (flow range)
Option1
Model
Contente
Model
Nil
W
Contente
Connecter lead wire is included (2m)
Connecter lead wire is included (2m) + Rubber cover
No option
10
25
50
11
0.2 to 10(5) /min
0.5 to 25(12.5) /min
1 to 50(25) /min
2 to 100(50) /min
Z
Note 1) Value in ( ) is the flow rate
when CO2 is used.
Proofreading certificate
Flow adjustment valve
Model
Contente
Nil
A
Without proofreading certificate
With proofreading certificate Note 2)
Model
Contente
Nil
S
No valve
Valve
Note 2) Writen in Japanese and English together.
Other language is available as special request.
Thread type (Connect port)
Operation manual
Flow range
Model
Contente
10 25 50 11
Model
Nil
N
Contente
01
02
Rc1/8
Rc1/4
NPT1/8
NPT1/4
G1/8
With operation manual (Booklet:in Japanese and English)
Without operation manual
N01
N02
F01
F02
C4
Output specification
Model
1
2
Contente
Applicable model
PFM30 series
PFM31 series
G1/4
Analog (1 to 5V)
Analog (4 to 20mA)
4 (5/32")One-touch fitting
6 One-touch fitting
C6
C8
N7
8 (5/16") One-touch fitting
1/4 One-touch fitting
Lead wire with a connector (2m) is attached to the product.
It can be ordered with a part No. ZS-33-D, when another one is required.
Piping inlet
Contente
Straight direction
Back
Option2
Model
Nil No option
Model
Nil
L
Option parts
Part number of optional part alone
Applicable part number
R
S
T
Bracket (Flow adjusting valve unnecessary, pipig on the rear surface)
Bracket (With flow adjusting valve)
Panel mount adapter (Flow adjusting valve unnecessary)
ZS-33-M
ZS-33-MS
ZS-33-J
PFM5
-
-
/PFM5
(S)- L-
PFM5
PFM5
-
-
-
(L)-
V
P
anel mount adapter (With flow adjusting valve)
ZS-33-JS
PFM5
S- (L)-
Note 3) When two or more options are necessary, please describe those alphabetically.
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Mounting and Installation
Installation
bracket mounting
•Fasten the bracket mounting screws at a clamping torque of
0.5 0.05N·m.
How to mount
Panel Mount mounting
•Insert Panel Mount Adapter B supplied as an accessory into
Section A of Panel Mount Adapter A.
Attached tapping screw
Push Panel Mount Adapter B from behind till the display is fixed
onto the panel.
The pin of Panel Mount Adapter B engages the notched part of
Panel Adapter C to fix the display.
•The sensor can be mounted on a panel with a thickness of 1 to
3.2mm.
•See the illustration below for panel cut dimensions.
1
I N
Section C
Section A
A
Insert
0
+0.5
24
Attached tapping screw
Without flow adjustment
valve
(using ZS-33-M)
Panel Mount
Adapter A
Push
Panel
Panel Mount
Adapter B
Bracket
Dimension A
Adaptor model
ZS-33-J
+0.5
With flow adjustment valve
(using ZS-33-MS)
54 0
Without flow adjustment valve
With flow adjustment valve
+0.5
74 0
ZS-33-JS
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Mounting and Installation (continued)
DIN rail mounting (using ZS-33-R)
Piping
•The tightening toque for DIN rail mounting screws and joint
screws should be 0.4 0.05N·m.
•Keep the tightening torque when piping for the female thread.
•Refer to the following table for the appropriate torque values.
Nominal size of Appropriate torque
screws
Rc1/8
Rc1/4
N·m
7 to 9
12 to 14
Through hole
Bracket
•Hold the metal part with the
spanner when piping.
Joint screw
DIN rail mounting
bracket
DIN rail mounting
screw
Note) Not applicable if the thread type is F02.
•For one-touch fitting, insert
the tube to the end so that
it is not pulled off.
•Insertion with excess force
lead to cause breakage.
•Ensure no leakage after piping.
•Use this flow sensor within the specified
operating pressure range and operating temperature range.
•Withstand pressure are 1.0MPa.
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Mounting and Installation (continued)
Output circuit
Wiring
Brown DC(+)
Black OUT1
Connection
•
Make connection after turning the power off.
•Use a separate route when installing wire.
Load
DC24V
Malfunction stemming from noise may occur if wire is installed in
the same route as that of power or high-voltage cable.
White Select response time
•
Be sure to ground terminal FG when using a switching regulator
obtained on the market. If analog output is performed connecting to a
switching regulator obtained on the market, switching noise will be
superimposed and product specification can no longer be met. This
can be prevented by inserting a noise filter, such as a line noise filter
and a ferrite element, between the switching regulator and the
sensor, or by using a seriespower supply instead of a switching
regulator.
Blue DC(
-)
Analog output 1 to 5V
Output inpedance 1k
Analog output 4 to 20mA
Load inpedance 50 to 600
External input : No voltage input
Reed switch or solid state switch input
30ms or more
Select response speed
•To reduce ripple by slowing the response speed when ripple of
analog output is large due to the effect of pulsation.
Connector
Connector Connecting / Disconnecting
•
When connecting the connector, insert it straight onto the pin holding
the lever and connector body between fingers and lock the connector
by pushing the lever claw into the square groove in the body of sensor
How to select
•Connect input line(white) to GND. While connected, response
.
•When disconnecting the connector, push down the lever by thumb
to disengage the lever claw from the square groove. Then pull the
speed is 1.0s. (50ms when not input)
connector straight out.
Body of sensor
Lever
Lead wire connector
Cover (Option:ZS-33-F)
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Error Indication
Error indication function
This function is to display error location and content when a
problem or an error occurs.
Error Name Error Display Error Content Troubleshooting
Flow exceeds
Apply flow within rated
rated flow range. flow range.
Flow
error
POWER
FLOW
Flow disply lamp is red.
System error.
Turn off the power
Possible damage supply once, and then,
of internal circuit. supply the power
again. If error is not
released by this, please
contact SMC sales
office.
POWER
FLOW
System
Erro
Power supply disply
lamp is red.
If the above remedy can't recover the operation, the error needs to be
investigated by SMC.
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