Brochure

Caution
Settable Range and Rated Flow Range
Set the flow rate within the rated flow range.
The regulating flow rate range is the range of flow rate that can be set in the switch.
The rated flow range is the range that satisfies the switch specifications (accuracy, linearity etc.) of the sensor.
It is possible to set a value outside of the rated flow range if it is within the regulating flow rate range, however, the specification is not be
guaranteed.
Rated flow range
Settable range
Displayable range
Sensor
0.2l/min 0.5l/min 1l/min 2l/min 10l/min 25l/min 50l/min 100l/min
Flow range
PFM710
PFM510
PFM725
PFM525
PFM750
PFM550
PFM711
PFM511
0.2 l/min
0
0
0
0
0.5 l/min
1 l/min
2
l/min
100 l/min
(50 l/min)
2
l/min
105 l/min
(52 l/min)
105 l/min
(52 l/min)
50 l/min (25 l/min)
1
l/min
52.5
l/min (26.2 l/min)
52.5
l/min (26.2 l/min)
10 l/min (5 l/min)
0.2 l/min 10.5 l/min (5.2 l/min)
10.5
l/min (5.2 l/min)
25
l
/min
(12.5 l/min)
0.5
l/min
26.3
l
/min (13.1 l/min)
26.3
l
/min
(13.1 l/min)
In the case of the PFM5 series, the displayable and settable ranges
are the same as the PFM3 series flow monitor.
Series
PFM
Specific Product Precautions 4
Be sure to read this before handling.
Refer to the back of page 1 for Safety Instructions and “Precautions for Handling
Pneumatic Devices” (M-03-E3A) for Common Precautions.
Others
Warning
1. After the power is turned on, the switch’s out-
put remains off while a message is displayed.
Therefore, start the measurement after a va
-
lue is displayed.
2. Perform settings after stopping control
systems.
Operation reflects the new values when settings are made. Ho-
wever, if the power is turned OFF in that state, the settings re
-
turn to the values before the change when the power is turned
ON again. Make sure to press the S button to save any setting
changes before turning OFF the power.
Dryer
IDFA AF AR
IR
AMD
AFD
PFM
Air
filter
Regulator Micro mist
separator
Flow
switch
<Vacuum line>
Suction filter
ZF PFM
Flow switch
Vacuum line
Fluid
1. Check regulators and flow adjustment valves
before introducing the fluid.
If pressure or flow rate beyond the specified range are applied
to the switch, the sensor unit may be damaged.
2. Install a filter on the inlet side when there is a
possibility of foreign matter being mixed with
the fluid.
3. Use dry air of quality compliant with
ISO85731-1 for this product.
If any mist or drainage present in the air attaches to the product,
accurate measurement could be prevented. Also, the accuracy
of the product could be degraded.
Warning
Recommended air circuits
<Compressed air line>
Series
PFM
Specific Product Precautions 3
Be sure to read this before handling.
Refer to the back of page 1 for Safety Instructions and “Precautions for Handling
Pneumatic Devices” (M-03-E3A) for Common Precautions.
1. Do not wipe the product with chemicals such
as benzene or thinner.
Such chemicals could damage the product.
2. The accuracy could change by 2 to 3% when
the piping is removed or replaced.
The repeatability accuracy is ±1% F.S. when piping is replaced
with piping of the same size. However, the accuracy could
change by 2 to 3% if the size is different or when changing from
straight to elbow or from elbow to straight piping.
3. Do not poke the inside of the piping port with
a stick.
The rectifier could break, making the product unable to sustain
the desired performance.
4. Do not touch terminals or connectors when
energising the product.
It could cause electric shock, malfunction, or damage to the
switch.
Caution
Maintenance
1. Perform periodical inspections to ensure pro-
per operation of the switch.
Unexpected malfunctions may cause possible danger.
2. Take precautions when using the switch for
an interlock circuit.
When a pressure switch is used for the interlock circuit, devise a
multiple interlock system to prevent trouble or malfunction, and
verify the operation of the switch and interlock function on a re
-
gular basis.
3. Do not make any modifications (including ex-
changing the printed circuit boards) to the
product.
It may cause human injuries and damage.
4. When maintenance work is performed, the fo-
llowing points should be noted.
• Turn off the power supply.
• Cut off the fluid supply, drain the fluid from the piping and en
-
sure the fluid is released to atmosphere before carrying out
maintenance. Otherwise, it could cause injury.
Warning
Back Page 4