Koganei FA Series User manual

FA Series Flow Meter
注：ｂタイプの使用サイズは左右50mm〜120mm未満
このデータからの縮率は50%〜120%未満
M140787 Ver.3.0
Instruction Manual Ver.3.0
Details

- 1 -
Safety Precautions ......................................... 2
Handling Instructions and Precautions . 3
Setup Guidelines ............................................. 7
Maintenance and Troubleshooting ....... 14
Bypass Unit Replacement Guidelines 15
Specifications ..................................................16
Order Codes ....................................................17
Pressure Loss .................................................18
Dimensions ......................................................19
Thank you for purchasing a Koganei FA Series Flow Meter.
To ensure safe use of this product, be sure to read the contents of this manual and gain
an understanding of how to properly operate the product before actually trying to use it.
Keep this manual in a safe place for future reference.
Contents

- 2 -
Before selecting and using the products, please read all the Safety Precautions carefully to ensure proper product use.
The Safety Precautions described below are to help you use the product safely and correctly, and to prevent injury or damage to you, other people, and assets.
Always be sure to comply with ISO4414 (Pneumatic fluid power - Recommendations for the application of equipment to transmission and control systems) and
JIS B8370 (Pneumatic system regulations) safety regulations.
■This product was designed and manufactured for use in general industrial machinery.
■ When selecting and handling equipment, the system designer or another person with sufficient knowledge and experience should always read the Safety
Precautions, catalog, Instruction Manual and other literature before commencing operation. Improper handling is dangerous.
■ After reading the Instruction Manual, catalog, and other documentation, always store them in a location that allows easy availability for reference to users of this product.
■ Whenever transferring or lending the product to another person, always attach the catalog, Instruction Manual, and other information to the product where they are
easily visible in order to ensure that the new user can use the product safely and properly.
■T he danger, warning and caution items listed under these Safety Precautions do not cover all possible contingencies. Read the catalog and Instruction Manual
carefully, and always keep safety first.
DANGER
Indicates situations that can be clearly predicted as dangerous.
Failure to avoid the situation creates the risk of death or serious injury.
It could also result in damage or destruction of assets.
WARNING
Indicates situations that, while not immediately dangerous, could become dangerous.
Failure to avoid the situation creates the risk of death or serious injury.
It could also result in damage or destruction of assets.
CAUTION
Indicates situations that, while not immediately dangerous, could become dangerous.
Failure to avoid the situation creates the risk of minor or semi-serious injury.
It could also result in damage or destruction of assets.
ATTENTION
While there is little chance of injury, this content refers to points that should be observed for appropriate use of the product.
The directions are ranked according to degree of potential danger or damage: “DANGER”, “WARNING”, “CAUTION”, and “ATTENTION”
Safety Precautions
DANGER
● Do not use the product for the purposes listed below:
1.
Medical equipment related to maintenance or management of human lives or bodies.
2.
Machines or equipment designed for the purpose of moving or transporting people.
3.
Critical safety components in mechanical devices.
This product has not been planned or designed for purposes that require
high levels of safety. Using the product in any of the ways described above
creates the risk of loss of human life.
● When mounting the product and workpiece, always make sure they are firmly
supported and secured in place. Falling, dropping, or abnormal operation of
the product creates the risk of personal injury.
● Never attempt to modify the product in any way. Doing so creates the risk of
injury, electric shock, fire, etc.
● Never attempt inappropriate disassembly, assembly or repair of the product
relating to basic construction, or to its performance or to functions. Doing so
creates the risk of injury, electric shock, fire, etc.
● Do not splash water on the product. Water spraying on the product, washing
the product, or using the product under water creates the risk of malfunction,
leading to injury, electric shock, fire, etc.
● Do not use the product in locations with or near dangerous substances such
as flammable or ignitable substances. This flow meter is not explosion-proof.
Doing so creates the risk of ignition and fire.
● Do not attempt any adjustment (connecting or disconnecting tubes or
connectors, piping work, etc.) to mechanisms attached to the product while the
product is operating. Abnormal operation creates the risk of personal injury.
WARNING
● Do not use the product in excess of its specification range. Doing so creates
the risk of product breakdown, loss of function, or damage. It could also
drastically reduce the product's operating life.
● Before supplying air or electricity to the device and before starting operation,
always conduct a safety check of the area of machine operation.
Unintentional supply of air or electricity could possibly result in electric
shocks, or in injury caused by contact with moving parts.
● Do not touch terminals and other exposed electric parts while power is turned
on. Doing so creates the risk of electric shock and abnormal operation.
● Do not allow the product to be thrown into fire.
Doing so creates the risk of explosion, resulting in the release of toxic gasses.
● Do not sit on the product, place your foot on it, or place other objects on it.
Doing so creates the risk of injury due to tripping or the product tipping over,
resulting in product damage and abnormal, erratic, or runaway operation.
Always read these precautions carefully before use.
● When conducting any kind of operation for the product, such as maintenance,
inspection, repair, or replacement, always turn off the air supply completely
and confirm that residual pressure inside the product or in piping connected to
the product is atmospheric pressure before proceeding.
In particular, be aware that residual air will still be in the air compressor or air
storage tank.
● Do not allow cables to be damaged.
Allowing a cable to become cut, bent excessively, pulled, rolled up, placed
under heavy objects, or squeezed between two objects creates the risk of
current leaks or defective continuity that can lead to fire, electric shock, or
abnormal operation.
● Do not allow the flow meter to be exposed to external magnetism while it is operating.
Unintended movements could result in damage to the equipment or in personal injury.
● Use safety circuits or design a system that prevents damage to machinery
and personal injury when the machine is shut down due to an emergency
stop or electrical power failure.
● Do not share a conduit with or wire parallel to power lines or high voltage lines.
Noise from these lines may cause the flow meter to operate erratically.
● When wiring, take care to ensure that wiring polarity is correct.
Incorrect polarity creates the risk of damage to the flow meter.
● Do not use any type of medium that is not specifically stipulated in the
specifications. Using a non-specified medium could lead to short term loss of
function, sudden degradation of performance, and a reduced operating life.
CAUTION
● Do not use in locations that are subject to direct sunlight (ultraviolet rays),
dust, salt, iron powder, humidity, or in the media and/or the ambient
atmospheres that include organic solvents, phosphate ester type hydraulic oil,
sulfur dioxide, chlorine gas, acids, etc. It could lead to early shutdown of some
functions or a sudden degradation of performance, and result in a reduced
operating life. For the materials, see the Major Parts and Materials.
● When installing the product, be sure to allow adequate work space around it. Failure
to do so will make it more difficult to conduct daily inspections or maintenance,
which could eventually lead to system shutdown or damage to the product.
● Do not use the flow meter in locations subject to large electrical currents or
strong magnetic fields. It could result in erratic operation.
● Do not scratch, dent, or deform the product by climbing on it, using it as a scaffold,
or placing objects on top of it. Doing so creates the risk of damage to or breakage
of the product, resulting in operational shutdown or degraded performance.
● Always post an "operations in progress" sign for installations, adjustments, or
other operations, to avoid unintentional supplying of air or electrical power,
etc. Unintended air or power supply can cause electric shock or sudden
operation, creating the risk of personal injury.

- 3 -
Handling Instructions and PrecautionsSafety Precautions
● Do not subject the flow meter cables to excess load by pulling on them, by
picking up the flow meter by them, or by placing heavy objects on them.
Such actions could result in current leaks or defective continuity that lead to
fire, electric shocks, or abnormal operation.
● While handling the flow meter, do not subject it to excessive shock (490 m/s
2
or greater) by hitting, dropping or bumping it. Even if the product appears
undamaged, damage to internal components can cause abnormal operation.
● Avoid load short-circuit conditions.
Turning on switch output while a load short-circuit condition exists can cause
damage to the flow meter due to over current.
Load short-circuit example: Connecting output lead wires of switch output to
DC power supply.
ATTENTION
● Whenever considering use of this product in situations or environments not
specifically noted in the catalog or instruction manual, or in applications where
safety is an important requirement such as in aviation facilities, combustion
equipment, leisure equipment, safety equipment, and other places where
human life or assets may be greatly affected, take adequate safety
precautions such as allowing plenty of margin for ratings and performance, or
fail-safe measures. Be sure to consult us with such applications.
● Always check the catalog and other reference materials for product wiring
and piping.
●
Do not configure control of the system in a way that could cause workpieces
to fall due to power failure.
Configure control of the system to prevent workpieces and other items from
falling due to power failure or by emergency stops of mechanical devices.
● When handling the product, wear protective gloves, safety glasses, safety
shoes, and other protective clothing.
● When the product can no longer be used or is no longer necessary, dispose
of it appropriately as industrial waste.
● Pneumatic equipment can exhibit degraded performance and function over
its operating life. Always conduct daily inspections of the pneumatic
equipment, and confirm that all requisite system functions are satisfied, to
prevent accidents from happening.
● For inquiries about the product, consult your nearest Koganei sales office or
Koganei Overseas Department. The addresses and telephone numbers are
shown on the back cover of this catalog.
Other
● Always observe the following items.
1. When using this product in a system, use only genuine Koganei parts or
equivalent (recommended) parts.
When conducting maintenance and repairs, always use genuine Koganei
parts or compatible parts (recommended parts).
Always observe the prescribed methods and procedures.
2. Never attempt inappropriate disassembly or assembly of the product
relating to basic configurations, or its performance or functions.
Koganei shall not be held responsible for any problems that occur as a result
of these items not being properly observed.
General Precautions
Mounting location
Avoid installing the FA Series Flow Meter in the following types of locations.
1. Locations where the ambient temperature or product temperature is −10℃
or below or exceeds 60℃.
2. Locations where the ambient humidity exceeds 90% RH.
3. Locations subjected to sudden temperature changes that can cause condensation.
4. Locations subjected to concentrations of corrosive and/or flammable gasses.
5. Locations subjected to high amounts of dust, salt, iron powder, or other
conductive matter, moisture, oil mist, or organic solvents.
6. Locations where the product is directly subjected to vibration and/or impact.
7. Locations exposed to direct sunlight.
8. Locations where water, rain, or other moisture can get on the product.
9. Locations where oil or chemicals can get on the product.
10. Locations that are always wet or dusty, or subject to water or dust.
11. Locations where strong magnetism or strong electric fields are being generated.
Operation when the maximum flow rate range is exceeded
When the flow rate exceeds the maximum flow rate range of the FA Series Flow
Meter, the alarm message " " will alternate on the display with the flow rate
reading. Always use this flow meter within the specified maximum flow rate range.
Installation and Piping
Piping
1. The FA Series Flow Meter is a precision instrument. Take care when handling
it. It can be damaged by dropping it or otherwise subjecting it to strong impact.
2. Whenever connecting piping to the FA Series Flow Meter, make sure that the
direction of the arrow marked on it matches the flow direction of the fluid.
3. When connecting piping, do not apply force to the bypass unit section.
4. When connecting piping, secure the main flow channel and rotate the pipe to
the suitable tightening torque range.
Model
FAS-002
FAS-005
FAS-030
FAS-060
FAS-120
Port size
Rc
1/4
1/2
1
1 1/2
2
Suitable tightening torque
N･m
12 to 14
31 to 33
36 to 38
59 to 61
74 to 76
Bypass unit
Main channel
5. Take care to keep foreign matter from flowing into the FA Series Flow Meter.
Any rust, water droplets, oil mist, dust, or other foreign matter inside piping
that gets into the FA Series Flow Meter creates the risk of measurement error
and damage to the flow meter. Before installation, be sure to thoroughly flush
both the upstream and downstream piping (pipe cleaning) and check to make
sure there is no foreign matter present.

- 4 -
Handling Instructions and Precautions
Installation attitude 1: Installation on horizontal piping, the display up. (Standard installation)
Installation attitude 2: Installation on horizontal piping, the display on the right when
viewed from the flow meter IN side pipe. When using this installation
attitude, set the low flow cut parameter value to 5. Failure to do so will
cause the flow rate to be displayed (output) even when there is no fluid
flowing. The normal flow side and back flow side integral functions activate,
causing the flow rate values to be integrated.
Installation attitude
Side drawing
Direction of flow
Up
Down
Note: "FS flow rate" is the "full-scale flow rate".
Example
At a pressure of 0.3 MPa when the flow meter is installed on horizontal piping
with the display facing to the right, when viewed from the flow meter IN side
pipe, causes a change in the flow rate that is no more than
1. 5% FS ±1 digit compared to the normal installation attitude.
0. 5[%FS / 0. 1MPa]×0. 3[MPa]＝1. 5[%FS]
Operating pressure
range
0 to 1 MPa
−0. 07 to 0 MPa
Flow rate range
5 to 100% of FS flow rate
Note
5 to 100% of FS flow rate
Instantaneous flow rate display
change amount
No more than 0.5% FS / 0. 1 MPa ±1 digit
No more than 0.5% FS / 0. 01 MPa ±1 digit
Up
Down
Direction of flow
Side drawing
Diagram viewed
from IN side pipe
Installation attitude 3: Installation on horizontal piping, the display on the left when viewed
from the flow meter IN side pipe. When using this installation attitude, set
the low flow cut parameter value to 5. Failure to do so will cause the flow
rate to be displayed (output) even when there is no fluid flowing. The
normal flow side and back flow side integral functions activate, causing the
flow rate values to be integrated.
Installation attitude 4: Installation on horizontal piping, the display down.
Do not use the flow meter in this installation attitude.
Installation attitude 5: Installation on vertical piping
Up
Down
Direction of flow
Direction of flow
Up
Down
Direction of flow
Side drawing
Diagram viewed
from IN side pipe
Up
Down Side drawing
Direction of flow
6. When connecting piping, apply an appropriate amount of sealant. Do not apply
sealant to the first two threads of the end of the pipe. Over-application of
sealant can cause it to get inside the piping, creating the risk of measurement
error and damage to the FA Series Flow Meter.
7. If different-diameter piping, a regulator, filter, valve, or other piping equipment
is installed upstream from the FA Series Flow Meter, be sure to provide a
straight pipe section as recommended. See "Specification accuracy and
straight pipe section" for more information. Failure to provide a straight pipe
section can cause flow rate errors.
8. Connecting expansion pipe or a tube coupler without providing a straight pipe
section can produce a negative flow rate reading due to back flow in bypass
unit, even though there is normal flow as far as the product is concerned.
9. Installing the display section on horizontal piping so it is in a downward orientation
may cause rust, water droplets, oil mist, dust, or other foreign matter to adhere to the
sensor, creating the risk of measurement errors and damage to the FA Series Flow
Meter. Do not use the display section in a downward orientation.
Installing the display section on horizontal piping in a sideways orientation will cause
errors due to the effect of the attitude. For details, see "Installation Attitudes" below.
10. Do not install in locations where the effects of pulsating flow or flow
maldistribution are present, such as in the vicinity of the compressor delivery port,
on bellows piping, etc. Also, do not install in a location where a regulator or check
valve is performing hunting. Doing so creates the risk of measurement error.
D
i
r
e
c
t
i
o
n
o
f
w
r
a
p
Leave 2 threads open
Leave 2 threads open
S
e
a
l
i
n
g
t
a
p
e
Liquid
sealant
Example At a pressure of 0. 3 MPa when the flow meter is installed on horizontal piping with the display
facing to the right when viewed from the flow meter IN side pipe, causes a change in the flow
rate that is no more than −1. 5% FS ±1 digit compared to the normal installation attitude.
−0. 5 [% FS/0. 1 MPa]×0. 3 [MPa]＝−1. 5 [% FS]
Operating
pressure range
0 to 1 MPa
−0. 07 to 0 MPa
Flow rate range
5 to 100% of FS flow rate
5 to 100% of FS flow rate
Instantaneous flow rate display
change amount
No more than −0.5% FS / 0. 1 MPa ±1 digit
No more than −0.5% FS / 0. 01 MPa±1 digit

- 5 -
Handling Instructions and Precautions
Note 4: Contact Koganei about 1 1/2B and 2B size filters and mist filters.
5:
Straight pipe section required connecting a filter with the same bore diameter as the flow meter.
6: An example of connecting contraction piping on FAS-002 (product specification range
of within ±3% FS) is shown below.
When connecting piping one size larger (such as 1/2B on FAS-002), use a prescribed
value of +5D for the upstream straight pipe section* and +5D for the downstream
straight pipe section.
* Length when piping one size larger than the prescribed value is connected.
7: An example of connecting expansion piping on FAS-005 (product specification range
of within ±3% FS) is shown below.
Do not connect piping with a diameter smaller than the connection pipe bore diameter
without straight section piping. Even if flow in the main channel itself is normal direction
flow, bypass unit back flow can produce a negative reading. Also, the readout may
show an extremely low flow rate instead of the actual flow rate.
When connecting piping one size smaller (such as 1/4B on FAS-005), use a prescribed
value of +10D for the upstream straight pipe section* and +5D for the downstream
straight pipe section.
* Length when piping one size smaller than the prescribed value is connected.
8: The illustration below shows single-elbow and double-elbow configuration.
9: Install the flow rate adjustment valve downstream from the flow meter.
10: The distance from the flow meter to an elbow should be greater than the prescribed
length. Piping from the regulator to the flow meter can be either tube piping or bent by
an elbow. However, when connecting to the flow meter with an elbow be sure to
provide the straight pipe section required by the elbow. Provide distance when
installing a filter and mist filter between the flow meter and elbow.
5D
FAS-002
1/4B3/8B 3/8B
10D 5D
FAS-002
1/2B 1/4B 1/4B 1/2B
15D
FAS-005
1/2B3/8B 3/8B
25D 5D
FAS-005
1/2B1/4B 1/2B 1/4B
10D
Single elbow
10D Double elbow
Elbow
Distance from flow meter
FAS-002 : 200 D or more
Other equipment: 30 D or more
Straight pipe
minimum of
10 D
Regulator
Filter
・ Whenever there is the risk of foreign matter (dust, sediment, oil mist, etc.) being
mixed in with the measured fluid, be sure to install upstream from the FA Series Flow
Meter a filter and mist filter that can remove foreign matter measuring 1μm or larger.
・ Periodically inspect and replace filters, and perform any other necessary filter maintenance.
Specification accuracy and straight pipe section
Install the FA Series Flow Meter so the arrow marked on its label is pointed in the same
direction as the fluid flow direction. When connecting different diameter tubing, valves,
filters, and other equipment, provides straight pipe in accordance with the information in the
table below.
A "straight pipe" is straight piping that is the same bore diameter as the flow meter. The
following types of pipes are suitable as straight pipe: carbon steel pipes for ordinary piping
(JIS G3452), carbon steel pipes for pressure service (JIS G3454), Schedule 40 or less, and
stainless steel pipes (JIS G3459), Schedule 40.Note 1.
For equipment not included in the table below, provide 15D or larger straight piping when
installing it upstream from the FA Series Flow Meter, and 5D or larger straight piping when
installing it downstream from the FA Series Flow Meter. The letter D represents the bore
diameter.Note 2.
When measuring back flow in addition to normal flow, the same length as the upstream
straight pipe is required downstream from the FA Series Flow Meter.
Pipe, connected equipment Connection
location
Straight pipe section for FA Series Flow Meter
Specification
range
Within (±3%FS)
Accuracy
Within ±5%FS
Mist filter
For FAS-002, FAS-005, FAS-030Notes 3, 5
Upstream from
flow meter
10D Not required
Mist filter
For FAS-060, FAS-120
Notes 4, 5
Upstream from
flow meter
20D Not required
1 size larger bore diameter piping
(contraction piping connection)
FAS-002 3/8B→1/4B
FAS-005 3/4B→1/2B
FAS-030 1 1/4B→1B
FAS-060 2B→1 1/2B
Note 6
Upstream from
flow meter
5D Not required
Downstream
from flow meter
Not required Not required
More than 1 size larger bore
diameter piping
(contraction piping connection)
FAS-120 2 1/2B→2B
Note 6
Upstream from
flow meter
10D 5D
Downstream
from flow meter
5D 5D
1 size smaller bore diameter piping
(expansion piping connection)
FAS-002 1/8B→1/4B
FAS-005 3/8B→1/2B
FAS-030 3/4B→1B
FAS-060 1 1/4B→1 1/2B
Note 7
Upstream from
flow meter
15D Not required
Downstream
from flow meter
Not required Not required
More than 1 size smaller bore
diameter piping
(expansion piping connection)
FAS-120 1 1/2B→2B
Note 7
Upstream from
flow meter
25D 10D
Downstream
from flow meter
5D 5D
Single elbowNote 8
Upstream from flow meter 10D Not required
Downstream from flow meter Not required Not required
Double elbowNote 8
Upstream from flow meter 10D 10D
Downstream from flow meter Not required Not required
Ball valve
(Full bore type, fully open)
Note 9
Upstream from flow meter 20D 10D
Downstream from flow meter 10D 5D
RegulatorNote 10
FAS-002
Upstream from flow meter 200D Not required
Downstream from flow meter 10D Not required
Regulator
Note 10
FAS-005, FAS-030, FAS-060,
FAS-120
Upstream from flow meter 30D Not required
Downstream from flow mete r 5D Not required
Air lter Upstream from flow meter 25D Not required
Note 1: Note that accuracy deteriorates when piping carbon steel pipes for
pressure service (JIS G3454) or stainless steel pipes (JIS G3459),
larger than Schedule 40 is connected. A larger schedule results in a
smaller pipe inside diameter which causes a pipe effect and
deteriorated accuracy.
2: The approximate D (bore diameter) for FAS-002 (1/4B) is 8 mm, for
FAS-005 (1/2B) is 15 mm, for FAS-030 (1B) is 25 mm, for FAS-060 (1
1/2B) is 40 mm, and for FAS-120 (2B) is 50 mm.
3: Always provide a filter upstream from the mist filter.

- 6 -
Handling Instructions and Precautions
・ Connecting to a quick fitting
Provide the straight pipe section noted in the table below when connecting the
FA Series Flow Meter to a quick fitting. Connecting without a straight pipe
section can produce a negative reading due to bypass unit back flow, even if
flow in the main channel itself is normal direction flow. Also, the readout may
show an extremely low flow rate instead of the actual flow rate.
Quick fitting
Straight pipe section
Tube
Direction of flow
Pipe, connected
equipment
Fitting
type
Connection
location
Straight pipe section for FA Series Flow Meter
Specification rangeNote
Within (±3%FS)
AccuracyNote
Within ±5%FS
Quick fitting
Tube sizeφ8
(For FAS-002)
Straight
type
Upstream from
flow meter
15D 5D
Downstream
from flow meter
Not required Not required
Elbow
type
Upstream from
flow meter
20D 10D
Downstream
from flow meter
5D 5D
Quick fitting
Tube sizeφ12
(For FAS-002)
Straight
type
Upstream from
flow meter
5D Not required
Downstream
from flow meter
Not required Not required
Elbow
type
Upstream from
flow meter
10D 5D
Downstream
from flow meter
5D 5D
Quick fitting
Tube sizeφ12, φ16
(For FAS-005)
Straight
type
Upstream from
flow meter
10D 5D
Downstream
from flow meter
Not required Not required
Elbow
type
Upstream from
flow meter
15D 10D
Downstream
from flow meter
5D 5D
Quick fitting
Tube sizeφ12, φ16
(For FAS-030)
Straight
type
Upstream from
flow meter
10D 8D
Downstream
from flow meter
5D 5D
Elbow
type
Upstream from
flow meter
15D 13D
Downstream
from flow meter
10D 10D
Note: Characteristics when the tube is extended straight out from the fitting
about 300 mm.
Wiring
1. Use a power supply that is within the specification range.
2. Wire a cable with connector separately from power lines and high voltage
lines (use a separate conduit). Noise from these lines may cause the
equipment to operate erratically.
3. When connecting a cable with connector, align the core wire and push it in as far
as it will go. Next, tighten the connector nut by hand. When tightening the nut,
be sure to keep it within the prescribed torque (0. 4 to 0. 6N・m range). Failure to
do so creates the risk of damage to the FA Series Flow Meter and inability to
maintain the IP65 protective structure, and loosening of the nut due to vibration.
4. Do not pull on the cable with strong force and do not lift the FA Series Flow
Meter by the cable (pull out strength: 40 N or less; bend strength; 20 N or
less). Also, do not subject the cable to repeated bending or pulling force.
5. Do not rotate the center part of the connector (see figure below) while the
connector is inserted fully into the FA Series Flow Meter. Doing so will cause
the FA Series Flow Meter connector to rotate, which can cause internal
wiring to twist and become damaged.
Center part of cable
with connector
Connector nut
6. Always turn off the power supply before doing any wiring.
7. Keep load resistance connected to the instantaneous flow rate output below 300 Ω.
8. Keep cable and connector ends away from moisture when doing wiring.
9. Double-check to make sure that wiring is correct before turning on power.
Wiring error creates the risk of damage and erratic operation.
1
2
3
4
V+ (brown)
I+ (white)
COM (blue)
EV (black)
Instantaneous flow rate
output is 4 to 20 mA
Allowable load
resistance is
300
Ω max.
22.8 to
25.2VDC
30VDC or less
30VDC, 50 mA
or less
Example of external connectionInner circuits
Load
Load
＋
−
＋
−
● Example connection
key
1
2
34
Pin No.
1
2
3
4
Signal name
V+
I+
COM
EV
Description
24VDC
Instantaneous flow rate output (4-20 mA)
COM
Switch output
Pin No.
1
2
3
4
Signal name
V+
I+
COM
EV
Lead color
Brown
White
Blue
Black
Cable wire colors and pin numbers

- 7 -
Display
Connector
Main channel
IN
Bypass unit
Mounting bolt
q
rt
w
e
y
OUT
Setup Guidelines
Nomenclature and functions
① Flow rate display: 5-digit, 7-segment LED that normally shows the
instantaneous flow rate and integrated flow rate. For
integrated flow rate, the displayed value is divided between
the four highest digits and five lowest digits. In setting
mode, the display shows setting items and values. When
an alarm occurs, it shows an alarm code.
②LED lamps:
L/min Lights during instantaneous flow rate display.
L/min
Lights during integrated flow rate display.
EV
Remains lit while switch output is on.
AL
Lights when an alarm occurs.
Key switches:
⑥
Used to switch the display screen, enter setting mode, etc.
⑤④ Used to configure function settings and parameter settings, to
switch between the instantaneous flow rate peak value, lower
value, and information display, and to reset the integrated value.
③ Used to check configuring function and parameter setting
contents, and to go to the information display.
Main channel: Connects to piping. There is an IN side and an OUT side.
Bypass unit: FAS-030, FAS-060, and FAS-120 support replacement with
new bypass unit.
Display: The display on top of the bypass unit can be rotated so it is
parallel with the flow path. From the basic position shown in
the illustration above, the display can be tilted 180°right or
90°left, a range of 270°.
Connectors: Used for power input and signal connection.
Mounting bolt: Secures the bypass unit to the main channel.
Integrated flow rate display
of highest digits
Integrated flow rate 999999999ℓ
Integrated flow rate display
of lowest digits
Integrated function
Function settings can be used to select integrated countup or integrated
countdown.
・ When the integrated count up value reaches 999999999, it returns to 0 and
continues counting up.
・ With integrated countdown, a countdown is performed from a preset value to
0. The countdown stops when the integrated value reaches 0.
・ The integrated value is saved to non-volatile memory at 10-minute intervals.
Note that this means, depending on the power off timing, the latest maximum
10-minute interval integrated value may not have been recorded.
Also note that there is no recording for an integrated countdown.
・ To reset the integrated value, hold down the and keys at the same
time for at least five seconds while the integrated flow rate screen four highest
or five lowest digits are displayed. This will return the count to 0.
In the case of the integrated countdown, the integrated event setting value is
reset as the integrated value. The integrated value is saved to non-volatile
memory when integration reset is performed.
● Integrated process and operations during back flow
The integrated process when back flow occurs is performed in accordance with
the selected integrated option as shown in the table below.
Process detailsC12 Setting
Normal flow and back flow are integrated separately.
When an instantaneous back flow is generated, the
normal flow integrated counter counts up after the back
flow integration amount reaches zero.
00:
Normal flow
and back flow
integrated
separately
01:
Integration with
back flow
compensation
＋＋
−
0
Instantaneous flow
rate
Integration counter
Back flow counter
Back flow rate integration
Normal flow rate integration
Normal flow rate
integration
＋
＋
−
0
0
Instantaneous flow rate
Integration counter
Back flow counter
Back flow rate integration
Normal flow rate
integration
Normal flow Normal flow
Back flow
The integration counter stops counting up during back flow and the
back flow is stocked to the back flow counter. After that, if the flow
becomes normal, the portion stocked on the back flow counter is
consumed and then the integration counter starts count up again.
The stock of the back
flow counter reaches 0,
so the integration
counter starts count up
again after this point
The back flow counter
integration remains
during this period, so
suspension continues
Count up is
suspended during
back flow
Note: In either case, the back flow integrated volume can be viewed on the
information display.

- 8 -
Setup Guidelines
Flow rate display unit
The display unit for instantaneous flow rate and integrated flow rate can be
changed as required.
Flow rate display exampl
Display unit setting C02 : 00 C02 : 01 C02 : 02 C02 : 03
Unit ℓ/min,ℓm3/h, m3m3/min, m3kg/h, kg
Instantaneous ow rate 200 12.0 0.200 15.5
Integrated ow rate 100000000 100000.000 100000.000 100000.000
Conversion fromℓ/min to each unit are shown below.
ｍ3/h=ℓ/min×60÷1000
kg/h=ℓ/min×60÷1000×1. 293
Density at 0℃ and 101. 325 kPa (abs) is assumed to be 1.
293.
Note: After changing the unit of flow rate display, select the applicable sticker
from among those provided and affix it to the flow meter.
Analog output
The instantaneous flow rate is output as an analog current (4 to
20 mA). Parameter settings can be used to change the flow rate
value (display value) at 20 mA output. Setting resolution can be
set in display value 1-digit intervals. Initial default settings are 4
mA at flow rate 0, and 20 mA at 100% FS flow rate.
Operating pressure selection
Selecting a value that is in the vicinity of operating pressure will
perform output compensation of the selected pressure and
reduce the effects of pressure characteristics.
Reference temperature selection
The flow rate display reference temperature can be set in 1℃
steps within the range of 0 to 35℃.
(Factory default temperature is 0℃. )
Low flow cut
Low flow cut can be set in 1% steps within the range of 1 to 50%
of FS flow rate (factory default: 1%).
At a setting of 1%, for example, 0 is always displayed as the flow
rate when the FS flow rate is within the range of −1 to 1%.
The low flow cut setting is applied to instantaneous flow rate and
integrated display values, and to the analog output value.
Self-diagnostic function
The self-diagnostic function automatically causes the FA Series
Flow Meter to display an alarm whenever there is an abnormality
in the output signal of the sensor that measures the flow rate or
a memory abnormality.
Back flow measurement
Enables measurement of back flow up to −30% of the FS flow
rate.
Note: For information about accuracy, see the specifications on
page 16 and 17.
Flow rate range expansion function
Enables measurement up to 200% of the FS flow rate.
Note: For information about accuracy, see the specifications on
page 16 and 17.
Switch output
● Switches
One of the switches shown in the table below can be selected. Except for
integrated pulse output, you can also select inverted output.
Switch Operation
Instantaneous ow rate
upper limit switch
Outputs when the value set with the instantaneous
ow rate switch 1 parameter is exceeded.
Instantaneous ow rate
lower limit switch
Outputs when the value set with the instantaneous
ow rate switch 1 parameter is subceeded.
Instantaneous ow rate
range switch
Outputs when instantaneous ow rate is within the range set
by instantaneous ow rate switch 1 and instantaneous ow
rate switch 2.
Integrated ow rate
count up switch
Outputs when the value set with the integrated
switch setting parameter is exceeded.
Integrated ow rate
countdown switch
Outputs when a value of zero results after the value
set with the integrated switch setting parameter is
decremented.
Integrated pulse output
Performs pulse output of the integrated ow rate
with the pulse weight set by switch output of the
function setting. Function settings can be used to
select a pulse width of 50 ms, 250 ms, or 500 ms.
For information about the pulse weights see the
table below.
Alarm output Outputs when an alarm is generated.
Model-specific pulse weight
Model
Setting [ℓ/pulse] Setting [m3/pulse, kg/pulse]
Minimum
unit
Minimum
unit x 10
Minimum
unit x 100
Minimum
unit
Minimum
unit x 10
Minimum
unit x 100
FAS-002 10 100 1000 0.01 0.1 1
FAS-005 10 100 1000 0.01 0.1 1
FAS-030 10 100 1000 0.01 0.1 1
FAS-060 100 1000 10000 0.1 1.0 10.0
FAS-120 100 1000 10000 0.1 1.0 10.0
● Switch hysteresis
When the instantaneous flow rate switch is selected, sets the hysteresis
(operation interval).
● Switch on delay
When the instantaneous flow rate switch is selected, sets the delay until
switch operation.
● Switch wait
When the instantaneous flow rate lower limit switch of the instantaneous flow
rate switch is selected, specifies switch operation wait unit a lower limit
setting value is exceeded once before power is turned on.
Displays
● Instantaneous flow rate screen and integrated flow rate screen
The seven segments of the display can be switched between instantaneous
flow rate and integrated flow rate. Up to five digits are used for instantaneous
flow rate display. A total of nine digits are shown for integrated flow rate
value, with the displayed value is divided between the four highest digits five
lowest digits.
When the four highest digits are displayed, the leftmost 7-segment LED
shows “”for countup or “ ” for countdown. If there is no countdown/up
indication, it means that the lowest digits are displayed.
● Instantaneous flow rate peak value and lower value
These values show the instantaneous flow rate peak value and low value
during the measurement period . The measurement period can be reset
(started) using a key operation.
● Information display
The information display function can be used to view the model ID, firmware
version, cumulative integrated values, and integrated value before integration reset.

- 9 -
Settings
● Mode navigation
2 seconds
＋ key
2 seconds
Maintenance
mode
Power on
Basic display
Note 1
Instantaneous flow rate display
Integrated flow rate
display to
lowest digits
Integrated flow rate
display to
highest digits
2 seconds
Instantaneous flow rate
peak value display
key
key
key
key
key
key
key
key
Parameter setting
mode
2 seconds
key
2 seconds
key
2 seconds
Function settings
mode
key
key
key
2 seconds
Instantaneous flow rate
lower value display
2 seconds
Information display
Note 1: The basic screen shows instantaneous flow rate, integrated flow
rate lowest digits, or integrated flow rate highest digits, in accordance
with the function number setting.
When an alarm is generated, the alarm code and basic screen
alternate at an interval of two seconds.
Each press of the key cycles through the screens in the
following sequence: Instantaneous flow rate →Integrated flow rate
lowest digits →Integrated flow rate highest digits →Alarm code →
Instantaneous flow rate.
2: Integrated value reset
While the integrated flow rate highest digits or lowest digits are
displayed, hold down the and keys at the same time for about
five seconds.
Normally this will reset the integrated value to "". However, when the
switch output select is configured for integration countdown (
or ), the integration switch setting values ( and ) will
be set.
Do not operate keys by pressing with a
mechanical pencil, a screw driver, or any
other pointed object.
Doing so can lead to malfunction.
CAUTION
● Function settings
①While the basic screen is displayed, hold down the
key for about two seconds.
The three digits on the left will show the function number,
while the two digits on the right will show the current setting
of the function.
Example of
display
Function number Current setting value
②Use the and keys to scroll through the function
numbers and display the one you want to change. Next,
press the key.
This will cause the function number to disappear, leaving
the two-digit setting value on the display.
③Use the and keys to scroll through the settings and
display the one you want. Next, press the key.
This will apply the setting and display the corresponding
function number and setting value.
Instead of pressing the key in the above procedure,
pressing the key will return to the function number/
setting value display without changing the setting.
④To configure other settings, repeat steps ②and ③as
many time as required.
To exit function selection, hold down the key for
about two seconds to change to the parameter setting
screen. Next, hold down the key again for about two
seconds to return to the basic screen.
Basic screen
Function selection
・・・
key 2 seconds
key 2 seconds
Setting parameters mode
key 2 seconds
Basic screen
Function settings mode
key
key
key
key
key
Setting number selection
・・・
key
key
key
key
key (Return without confirming the setting number)
key
(Confirm the setting number and return)
Setup Guidelines

- 10 -
Setup Guidelines
● Setting parameters
①
While the basic screen is displayed, hold down the key
for about two seconds to enter the function select mode. Next,
hold down the key again for about two seconds to enter
parameter setting mode.
Example of display when
setting parameter items
Example of display
during setting
②Use the and keys to scroll through the setting items
and display the one you want. Next, press the key.
This will display a value with the rightmost digit flashing.
③Press the key to move the flashing to the left.
↓ flashing ↓ flashing
key
④ Use the and keys to change the value of the currently flashing
digit. Use the and keys to change each of the digits until the
value is the one you want.
⑤After the value is the one you want, press the key.
This will display the setting item and its set value.
⑥
To configure other settings, repeat steps ②through ⑤as many time
as required.
⑦ To exit the setting procedure, while a setting item is displayed
hold down the key for about two seconds to return to
the basic screen.
Function settings mode
Display item selection
・・・
key 2 seconds
Basic screen
key 2 seconds
key 2 seconds
Basic screen
Setting parameters mode
key
key
key key
key
key
Settings Note
・・・
key
key key
key
key key
key key key key key key
・・・ ・・・ ・・・
Note: As the setting values increase, 9 becomes 0
and the value to the left increases by 1. In
the same way, as the value decreases 0
becomes 9 and the value to the left
decreases by 1.
key
key
Function setting list
Function
number
Description Setting number and
description
De-
fault
Remarks
Setting key
lock
00: No key lock
01: Key lock
00
You can also use this setting
to cancel key lock.
Performing a change
operation while key lock is
engaged will cause " "
to be displayed.
Display unit
setting
Instantaneous ow rate,
integrated ow rate
Note
00:ℓ/min,ℓ
01: m
3
/h, m
3
02: m
3
/min, m
3
03: kg/h, kg
00
Caution: After changing the
unit, existing integrated
values continue to be
integrated in the previous
unit. They are not converted
automatically. After changing
the unit, reset integration
before using it again.
・The peak value and lower
value are reset when the
unit is changed.
Switch output
00: Not used
01: Instantaneous ow rate upper limit
02: Instantaneous ow rate lower limit
03: Instantaneous ow rate range
04: Instantaneous ow rate upper limit
(inverted)
05: Instantaneous ow rate lower limit
(inverted)
06: Instantaneous ow rate range
(inverted)
07: Integrated count up
08: Integrated count up (inverted)
09: Integrated countdown
10: Integrated count down (inverted)
11: Integrated pulse (minimum unit)
12: Integrated pulse
(Minimum unit x 10)
13: Integrated pulse
(Minimum unit x 100)
14: Alarm generation switch
15: Alarm generation switch (inverted)
00
Inversion causes output ON
and OFF to be inverted.
Basic screen
00: Instantaneous ow rate
screen
01: Integrated lowest digit screen
02: Integrated highest digit
screen
00
Determines the content of the
ow rate display when power
is turned on.
The function setting mode is
entered from the basic screen.
Switch wait
00: Not used
01: Use
00
Gas type 00: Air, nitrogen (xed) 00 Cannot be changed.
Operating
pressure
00: 0. 3 MPa standard
01: 0. 1 MPa standard
02: 0. 5 MPa standard
03: 0. 7 MPa standard
00
When the installation attitude
is "Installation attitude 2" or
"Installation attitude 3", error
due to installation attitude
can be reduced by
maintenance mode pressure
compensation adjustment
value and operating
pressure.
For details, see "●Mainte-
nance Mode" on page 13.
Reference value
conversion
00 to 35℃ (1℃ steps) 00
Changing setting resets peak
value and lower value.
Integration
options
00: Integration with only normal ow rate
01: Integration with back ow compensation
00
Integrated
pulse width
00: 50 ms
01: 250 ms
02: 500 ms
00
Fixed output
during alarm
00: Not used
01: Up
02: Down (xed)
00
Outputs a xed value from
instantaneous ow rate
output when a sensor
abnormality or memory
abnormality occurs. Flow
rate indication is zero when
an alarm occurs.
Note: After changing the display unit setting, select the provided
sticker that corresponds to the new unit and affix it to the flow
meter.

- 11 -
Operation depends on the setting of function selection .
(1) When function selection is set to or (instantaneous flow rate upper
limit switch)
After exceeding the instantaneous flow rate upper limit value and the switch turning
on, the settings for conditions to turn the switch off are set to hysteresis.
[Switch OFF Conditions] = [Instantaneous Flow Rate Upper Limit Value] – [Hysteresis]
Hysteresis is specified as a percentage (%) of the FS flow rate.
Setting value
Flow rate low Flow rate high
Hysteresis
ON (OFF)
OFF (ON)
( ) indicate inverted output
Note: If the hysteresis threshold value is set below 0, the threshold
value becomes 0 and if the flow rate is minus, it turns off.
(2) When function selection is set to or (instantaneous flow rate
lower limit switch)
After falling below the instantaneous flow rate lower limit value and the switch turns
on, the settings for conditions to turn the switch off are set to hysteresis.
[Switch OFF Conditions] = [Instantaneous Flow Rate Lower Limit Value] + [Hysteresis]
Hysteresis is specified as a percentage (%) of the FS flow rate.
( ) indicate inverted output
Setting value
Hysteresis
Flow rate low Flow rate high
ON (OFF)
OFF (ON)
(3) When function selection is or (instantaneous flow rate range switch)
When ＞, the setting value is the upper limit and the
setting value is the lower limit.
When ＜, the setting value is the lower limit and the
setting value is the upper limit.
Operation does not work when = .
Hysteresis operation can be taken outside of the lower and upper limit setting
values as shown below.
Hysteresis is specified as a percentage (%) of the FS flow rate. Different settings can
be specified for the upper limit value and lower limit value.
ON (OFF)
OFF (ON)
( ) indicate inverted output
Setting value
Hysteresis
Flow rate low Flow rate high
Hysteresis
Setting value
・When setting value ＜setting value
ON (OFF)
OFF (ON)
( ) indicate inverted output
Setting value
Hysteresis
Flow rate low Flow rate high
Hysteresis
Setting value
Note: If the hysteresis threshold value is set below 0, the threshold value becomes 0 and if the flow rate is minus, it turns off.
・When setting value ＞setting value
Parameter setting list
Display item Item content Setting range Default Remarks
Analog output
20 mA ow rate
specication
Note 1
Flow rate value
equivalent to 0
to 400% FS can
be set. Note 5
Depends
on model
number.
・Initial default depends on model.
FAS-002 →200
FAS-005 →500
FAS-030 →3000
FAS-060 →6000
FAS-120 →12000
・Setting ranges are values with decimal
points removed. Decimal points will be
added with model settings.
・Expected output cannot be obtained
when the setting values is less than 10%
of FS. Setting zero outputs xed output
during an alarm.
・ Recongure this setting after changing
the display unit setting with function
selection .
Analog output
4mA ow rate
specicationNote 1
Flow rate value
equivalent to 0 to 400%
FS can be set.
Note 5
0
・Settings are values with decimal
points removed. Decimal points will
be added with model settings.
Instantaneous
ow rate switch
Output 1Note 2
Flow rate value
equivalent to 0 to 400%
FS can be set.
Note 5
0
・
This setting can be congured
when function selection is
set to through .
・Settings are values with decimal
points removed. Decimal points will
be added with model settings.
・ Recongure this setting after
changing the display unit setting
with function selection .
Switch output
hysteresis 1Note 2
0 to 10% FS
ow rate
1
Switch output
on delay 1
Note 3
0 to 60 s 0
Instantaneous
ow rate switch
output 2Note 2
Flow rate value
equivalent to 0 to 400%
FS can be set.
Note 5
0
・ This setting can be congured
when function selection is
set to or .
・Settings are values with decimal
points removed. Decimal points will
be added with model settings.
・ Recongure this setting after
changing the display unit setting
with function selection .
Switch output
hysteresis 2Note 2
0 to 10% FS ow
rate
1
Switch output on
delay 2Note 3
0 to 60 s 0
Output
compensation factor
0.100
〜2.000
1.000
Can be set in 0. 001 steps. Display value
is reected in output. Changing setting
resets peak value and lower value.
Low ow cut 1〜50％1 Applied to both normal and back ow.
Maximum display
value
100〜200％ 200
Changes display range maximum value
from standard 200% of FS. When ow
rate exceeds setting value, set maximum
display value alternates with error display
(ow rate over).
Integration switch
setting value
lowest digits
00000
〜99990
0
Can be congured when function
selection is set to
through .
Integration
switch setting
value highest
digits
0000
〜9999 0
Cost rate
Note 4
1.0 〜100.0 100.0
Species the cost rate when cost is
displayed on information display.
Note 2: Instantaneous flow rate switch operation
Setup Guidelines
Note 1: Analog output scaling
Output for an instantaneous flow rate value is calculated using the formula
below.
([Indicated Flow Rate]−[4 mA Setting Value])
×16＋4 [mA]
([20 mA Setting Value]−[4 mA Setting Value])
4 ｍA setting value : Instantaneous flow rate when 4 mA is output
20 ｍA setting value : Instantaneous flow rate when 20 mA is output
・Minus flow output limit is 3. 2 mA, plus side output upper limit is 20. 8
mA.
・When [4 mA Setting Value
]≧[20 mA Setting Value ], a
fixed output value will be output during an alarm.
・When [20 mA Setting Value]−[4 mA Setting Value]＜10% of FS flow rate,
resolution is insufficient so desired output may not be possible.

- 12 -
Setup Guidelines
Note 3: Switch on delay operation
Switch on delay specifies the delay time until a switch
turns ON.
Switch on delay is enabled when the setting is set
to , and the setting is set to .
Note 4: Cost rate
Cost rate is the rate specified in accordance with function
selection " : display unit selection" setting.
Note 5: Setting ranges
Setting ranges depend on the model number and display
unit. The table below shows the available ranges.
If a value that is greater than the maximum display value is set,
instantaneous flow rate output will be up to equivalent to the
maximum display value.
Do not set values that exceed the maximum display value for
instantaneous flow rate switch output 1 and instantaneous flow
rate switch output 2. The instantaneous flow rate may not reach
the set value during operation and may not work in the case.
selection value Cost rate setting unit
00:ℓ/min, ℓ
Per 1m3
01: m3/h, m3
02: m3/min, m3
03: kg/h, kg Per 1 kg
Setting value
FAS-002 FAS-005 FAS-030 FAS-060 FAS-120
Remarks
00 :
［ℓ/min］0 to 800 0 to 2000 0 to 12000 0 to 24000 0 to 48000
Setting range
upper limit is
equivalent to a
400% FS ow
rate value.
01 :
［m
3
/h］0 to 48.0 0 to 120.0 0 to 720.0 0 to 1440.0 0 to 2880.0
02
:
［m
3
/min］0 to 0.800 0 to 2.000 0 to 12.000 0 to 24.000 0 to 48.000
03
:
［kg/h］0 to 62.1 0 to 155.2 0 to 931.0 0 to 1862.0 0 to 3724.0
● Instantaneous flow rate peak value display
①
While the instantaneous flow rate screen or integrated flow rate screen is
displayed, hold down the key for about two seconds.
This will change to the instantaneous flow rate peak value screen, which
alternate between and the peak value.
② To exit the peak value screen, press the key. This will return to the
instantaneous flow rate screen or integrated flow rate screen.
・To clear the current instantaneous flow rate peak value, display the peak
value and then hold down the key for about five seconds.
● Instantaneous flow rate lower value display
①
While the instantaneous flow rate screen or integrated flow rate screen is
displayed, hold down the key for about two seconds.
This will change to the instantaneous flow rate lower value screen, which
alternate between and the lower value.
② To exit the lower value screen, press the key. This will return to the
instantaneous flow rate screen or integrated flow rate screen.
・ To clear the current instantaneous flow rate lower value, display the lower
value and then hold down the key for about five seconds.
● Information display
①
While the instantaneous flow rate screen or integrated flow rate screen is
displayed, hold down the key for about two seconds.
This will change to the information screen, which alternate between the
display item and value.
② To go to the next item, press the key. To go to the previous item,
press the key.
③ To exit the information screen, press the key. This will go to the
instantaneous flow rate screen or integrated flow rate screen.
Display content list
Display item Item content Description
Model ID
ID that identies the model.
FAS-002 →0000
FAS-005 →0001
FAS-030 →0002
FAS-060 →0003
FAS-120 →0004
Range ID
ID that identies the reference range
FAS-002 →02000 (200. 0
ℓ
/min)
FAS-005 →05000 (500. 0
ℓ
/min)
FAS-030 →03000 (3000
ℓ
/min)
FAS-060 →06000 (6000
ℓ
/min)
FAS-120 →12000 (12000
ℓ
/min)
F/W version
Cost display (lowest digits)
Shows the cost.
Note 1
Cost display (highest digits)
Back ow rate integrated value (lowest digits)
Shows the back ow integrated
ow rate.
Note 2
Back ow rate integrated value (highest digits)
Cumulative integrated value (lowest digits)
Shows cumulative integrated value
since shipment.
This value is not returned to 0 by
integrated value reset.
Cumulative integrated value (highest digits)
Integrated value before integrated value reset
(lowest digits)
Shows the integrated value
immediately before an integrated
value reset was performed.
Integrated value before integrated value reset
(highest digits)
Note 1: The conversion rate can be changed by setting the cost
rate setting of parameter setting " ".
This item is not displayed when integrated countdown is
selected.
2: When the function selection " " integration option is
set to , the remaining back flow amount will be
displayed and decremented when there is normal flow.

- 13 -
● Maintenance mode
The maintenance mode of this product makes it possible to embed adjustment
values, to adjust the output circuit, and to configure other special option settings,
when replacing the bypass unit.
① While the basic screen is displayed, hold down the key for about
two seconds to enter function selection mode. Next, hold down the
and keys at the same time for about two seconds.
② Use the and keys to scroll through the setting items and display
the one you want. Next, press the key.
This will display a setting value with the rightmost digit flashing.
③ Press the key to move the flashing to the left.
↓ flashing ↓ flashing
key
④ Use the and keys to change the value of the currently flashing
digit. Use the and keys to change each of the digits until the value
is the one you want.
⑤ After the setting value is the one you want, press the key.
This will specify the setting value and display the setting item.
⑥ To configure other settings, repeat steps ②through ⑤.
⑦ To exit the setting procedure, while a setting item is displayed, hold down
the key for about two seconds to return to the basic screen.
Function settings mode
Display item selection
・・・
+ key 2 seconds
Basic screen
key 2 seconds
key 2 seconds
Basic screen
Maintenance mode
key
key
key
key
Settings Note
Note: As the setting values increase, 9 becomes 0
and the value to the left increases by 1. In
the same way, as the value decreases 0
becomes 9 and the value to the left
decreases by 1.
key key
・・・
key
key key
key
key key
key key key key key key
・・・ ・・・ ・・・
key
key
Setting list
Display item Item content Setting range Default Remarks
Calculation
lter
1 to 16 8
Measurement
cycle
5 to 100 5 [×10ms]
Fixed output
during alarm
(Up)
0 to 120％ 110 Step of 1
Pressure com-
pensation ad-
justment value-
Note
Adjustment
value
0.998
Compensation factor when 01 selected for
pressure compensation.
Pressure com-
pensation ad-
justment value-
Note
Adjustment
value
1.002
Compensation factor when 02 selected for
pressure compensation.
Pressure com-
pensation ad-
justment value-
Note
Adjustment
value
1.004
Compensation factor when 03 selected for
pressure compensation.
Channel ID
number 0
Adjustment
value
＊＊＊
Congured when using the replacement bypass
unit. Settings register main channel
characteristic values. Not displayed for
FAS-002, FAS-005. Do not change except
when replacing bypass unit. Cannot be
changed without inputting a password for the
reservation code.
Channel ID
number 1
Adjustment
value
＊＊＊
Channel ID
number 2
Adjustment
value
＊＊＊
Model
FAS-030=2
FAS-060=3
FAS-120=4
＊＊＊
Congured when using the replacement bypass
unit. Note that proper ow rate measurement
will not be possible if a different model number
from the actual channel is selected. Not
displayed for FAS-002, FAS-005. Do not
change except when replacing bypass unit.
Cannot be changed without inputting a
password for the reservation
code.
Reservation
code
＊＊＊ 0
For information about the reservation code, see
"Bypass Unit Replacement Guidelines" on page
15.
Setup Guidelines
Note: Certain operating pressures may cause errors in the displayed flow rate
when the installation attitude is "Installation attitude 2" (Installation on
horizontal piping, display on the right when viewed from the flow meter
IN side pipe) or "Installation attitude 3" (Installation on horizontal piping,
display on the left when viewed from the flow meter IN side pipe).
However, error due to installation attitude can be reduced by setting the
pressure compensation adjustment values to the values in the table
below. For information about flow rate display change caused by
installation attitude, see "Installation attitude" on page 4.
Note: Changing the pressure compensation adjustment value is not required
when using an installation attitude other than "Installation Attitude 2"
and "Installation Attitude 3".
Setting conditions Setting values
Display direction Operating pressure setting Maintenance mode setting change
Installation on horizontal
piping, display on the right
when viewed from the
ow meter IN side pipe,
Installation attitude 2
0.3MPa Set to 01. Change " " to 0.997.
0.1MPa 01 Change " " to 0.997.
0.5MPa 02 Change " " to 0.997.
0.7MPa 03 Change " " to 0.997.
Installation on horizontal
piping, display on the left
when viewed from the
ow meter IN side pipe,
Installation attitude 3
0.3MPa Set to 01. Change " " to 1.003.
0.1MPa 01 Change " " to 0.999.
0.5MPa 02 Change " " to 1.007.
0.7MPa 03 Change " " to 1.011.

- 14 -
Maintenance and Troubleshooting
Maintenance
To ensure proper operation, conduct periodic inspection at least
once a year.
If the self-diagnostic function displays an alarm that does not
clear even though the cause of the alarm is eliminated, request
servicing from Koganei. Contact the Overseas Department for
more information.
The addresses and telephone numbers are shown at the back of
this manual.
Troubleshooting
● Abnormalities and remedies
Symptom Remedy
Nothing appears on the
display.
・
Make sure the supply power voltage and polarity are being
applied correctly.
・
Make sure that connectors are connected correctly.
The ow rate display
does not become zero
even when valves
upstream or down-
stream from the ow
meter is closed and
there is no ow. (Output
signal is not 4 mA. )
・
Make sure there are no air leaks in the piping.
・
Make sure that wiring is correct.
・
When the ow meter is installed on horizontal piping with the
display sideways, inuence of the installation attitude may cause
zero point drift. (Since installation on horizontal piping with the
display sideways causes the accuracy guarantee ow rate range
to become 5 to 100% FS, set the low ow cut in this case to 5%. )
・
In a location subject to large ambient temperature uctuation and
large ow uid temperature uctuation, convection within the
piping may be detected as ow. Perform measurement after
temperature has stabilized sufciently.
Large instrument error
compared against the
standard instrument.
The instrument is
outside the accuracy
range.
・
Make sure there are no air leaks in the piping.
・
Check for foreign matter trapped in the main channel orice. If
foreign matter is present, remove it.
・
Check for dirt, oil, or other foreign matter in piping and the ow
meter connection port. If foreign matter is present, Koganei
servicing and replacement are required. Contact your nearest
Koganei sales ofce or the Overseas Department.
・
Check to make sure that wiring is correct.
・
Check to make sure that there is no large uctuation in ow rate
within a few seconds and that the measurement range is not
exceeded by a large amount.
● Alarm displays and required actions
Alarm
Code Item Description Cause Remedy
Flow rate over
A ow rate that
exceeds the value
set by the maximum
display value
parameter setting is
owing. Or a back
ow that exceeds
the back ow rate
range is owing.
There may be
a high ow
rate outside of
the maximum
display range
or back ow.
Note 1
Check if a high ow rate exists
and eliminate its cause. If the
instantaneous ow rate display
when the alarm occurs shows
a minus (–) sign, back ow
occurs. Eliminate the cause of
the back ow. The alarm will
cease displaying when the
actual ow rate becomes within
the display range ow rate.
Registration
data abnormal-
ity 1
Abnormal channel
ID numbers
registered. Correct
ow rate calculation
cannot be
performed.
The registered
channel ID
numbers may
be wrong.
Use maintenance mode to
register the correct channel ID
numbers. Note 2 If changing the
setting does not clear the
alarm, turn the instrument off
and then back on again. If this
does not clear the alarm,
request servicing.
Registration
data abnormal-
ity 2
Correct calculation
cannot be
performed because
of abnormal data
registered for the
ow sensor
characteristic
values.
Registered
characteristic
data may be
corrupted,
resulting in
abnormal
values.
Turn the instrument off and
then back on again. If this
does not clear the alarm,
request servicing.
Sensor
abnormality 1
Flow rate signal
is outside the
proper range.
The signal level
may be exceedingly
low due to a short
circuit caused by
adherence of
foreign matter or
excessive back ow
that exceeds the
measurement
range.
If excessive back ow is
the cause, this error will
clear automatically when
the ow rate returns within
the measurement range. If
it is not due to excessive
back ow and the alarm
does not clear after a
number of
hours, request
servicing.
Sensor
abnormality 2
Flow rate signal
level may not
match the actual
ow rate.
Sensor may be
malfunctioning or
output may be
dropping. Foreign
matter may be
adhering to sensor,
or there may be
condensation on
the sensor, etc.
Pass dry air through the
system. If the error does
not clear after a number of
hours, request servicing.
Sensor
abnormality 3
Sensor
abnormality 4
Heater voltage is
outside the
proper range.
The sensor may be
damaged, or there
may be a short
circuit due to the
adherence of
foreign matter, etc.
If the error does not clear after
a number of hours, request
servicing.
Memory abnormality
Instrument
information
data
abnormality
Sum mismatch
when accessing
EEPROM.
Data may
have been
corrupted by
noise, etc.
Turn the instrument off and
then back on again. If this
does not clear the alarm,
request servicing.
Characteristic
value information
data abnormality
Setting
information
data
abnormality
Power was cut
off during data
writing, which
created the
risk of
abnormal
completion.
Recongure the data, and
then turn the instrument off
and then back on again. If
this does not eliminate the
alarm, request servicing.
Integrated
information
data
abnormality
Perform an integrated value
reset, and then turn the
instrument off and then back
on again. If this does not
eliminate the alarm, request
servicing.
Note 1: If parameter setting were used to change the maximum display value,
this alarm occurs in accordance with the changed setting.
2: For information about channel ID numbers, see "Bypass Unit
Replacement Guidelines" on page 15.

- 15 -
Bypass Unit Replacement Guidelines
● Do not lift or carry the flow meter by holding the bypass unit. Doing
so can damage the flow meter or cause it to fall, creating the risk of
personal injury.
● When replacing the bypass unit, be sure to release flow meter
internal pressure before removing the current bypass unit.
●
Replacing the bypass unit causes the ±3％FS ±1 digit
instantaneous flow rate display accuracy to become ±5％FS ±1
digit.
CAUTION
● The following modes support bypass unit replacement: FAS-030,
-060, and -120.
Mounting the bypass unit
1. Check to make sure that the rubber sheet of the new bypass
unit is securely affixed and that the gasket that was in place
when you purchased the unit is affixed to the main channel.
With the arrow on the label of the bypass unit aligned with the
arrow on the label of the main channel, mount the bypass
unit on the main channel with four bolts. Be sure to tighten
the bolts evenly to a tightening torque of 2. 6 to 3. 3 N・m.
2. Connect the cables and turn on power. Keep the tightening
torque of the cable nut to 0. 4 to 0. 6 N・m range.
3. From the basic screen, enter maintenance mode. Input
channel ID numbers for 0, 1, and 2, and input the model
number.
For details, see "●Maintenance Mode" on page 13.
If the new replacement bypass unit remains locked, normally
the setting lock of the channel ID numbers and model
number are disengaged, input 1111 for the P_Code
reservation code in the case.
・The channel ID numbers are marked on the Body Number
label of the main channel.
※※※※※ ー※※※※※ ー※※※※※
Body Number
Channel ID number 0
Channel ID number 1
Channel ID number 2
・Model numbers are 2 for the FAS-030, 3 for the FAS-060,
and 4 for the FAS-120.
・Be sure to double check the channel ID numbers and the
model number after you input them.
4. Check to make sure that the instantaneous flow rate display
shows zero.
5.
Apply pressure to the flow meter and inside the piping, and
check to make sure that the instantaneous flow rate shows
zero when there is no flow.
6. Be sure to check and make sure there are no external leaks.
Reference: Channel ID numbers
"Channel ID numbers" are main channel characteristic
information that represent main channel's split flow ratio
adjustment values. Channel ID numbers 0, 1, and 2 correspond
to bypass flow ratio adjustment values 0, 1, and 2. Using
maintenance mode to write these values into the bypass unit
adjusts output to match the characteristics of each main
channel, which makes it possible to maintain accuracy even if
the bypass unit is replaced.
Removing the bypass unit
1. Prepare the following items: Safety glasses, helmet, gloves,
hex key (for M5, between flats 4 mm)Note 1
2. Release the pressure from inside the flow meter and piping,
use a pressure gauge to confirm that pressure is zero.
3. Gradually loosen the four bolts that secure the bypass unit in
place and then remove them. Note 2
Note 1: For safety, wear safety glasses when removing the
bypass unit.
2: Be sure to leave the gasket in place on the main
channel.
Bottom diagram of bypass unit
Rubber sheet
Orifice for bypass unit
Gasket
Note 2
Body number
label
Top diagram of main channel
(with bypass unit removed)
Front diagram of main channel
※※※※※ ※※※※※ ※※※※※

- 16 -
−0. 07 to 1. 0 MPa (gauge pressure)
−10 to ＋60℃ (non-freezing)
0 to 90% RH (Non-condensation)
−20 to ＋70℃ (non-freezing)
0 to 90% RH (Non-condensation)
1. 5 MPa (gauge pressure)
100 ㎖/h (normal) (when flow meter internal pressure is 1. 5 MPa)
24VDC
22. 8 to 25. 2VDC
120 mA max.
50±5 ms (when shipped)
Specifications
Model
Item FAS-002
4 to 200
（10 to 200）
2
−60 to 400
1
10
−60 to 400
−3.6 to 24.0
−0.060 to 0.400
−4.7 to 31.0
10 to 500
（25 to 500）
5
−150 to 1000
1
10
−150 to 1000
−9.0 to 60.0
−0.150 to 1.000
−11.6 to 77.6
60 to 3000
（150 to 3000）
30
−900 to 6000
5
10
−900 to 6000
−54.0 to 360
−0.900 to 6.000
−70 to 465.5
120 to 6000
（300 to 6000）
60
−1800 to 12000
10
100
−1800 to 12000
−108.0 to 720.0
−1.800 to 12.000
−140.0 to 931.0
240 to 12000
（600 to 12000）
120
−3600 to 24000
10
100
−3600 to 24000
−220.0 to 1440.0
−3.600 to 24.000
−279.0 to 1862.0
FAS-005 FAS-030 FAS-060 FAS-120
Air, nitrogen
However, dry air that does not include any corrosive elements (chlorine, sulfur, acid, etc.),
and clean air that does not include dust or oil mist
（ ）
±3％FS ±1 digit (2 to 100% of FS flow rate, 5 to 100% in the case of installation attitudes 2 and 3)Note 9
On the order of ±6％ FS (−30 to 0% of FS flow rate)
On the order of ±10％RD (100 to 200% of FS flow rate)Note 7
±1. 0％FS ±1digit (2 to 100% of FS flow rate)
On the order of ±2％ FS (−30 to 0% of FS flow rate)
On the order of ±10％RD (100 to 200% of FS flow rate)Note 7
No more than 0. 15% FS/℃ ±1 digit
No more than −0. 25% FS/0. 1 MPa ±1 digit (2 to 40% of FS flow rate)
No more than −0. 55% FS/0. 1 MPa ±1 digit (40 to 100% of FS flow rate)
No more than 0. 5% FS/0. 1 MPa±1 digit (5 to 100% of FS flow rate)
No more than 0. 5% FS/0. 01 MPa ±1 digit (5 to 100% of FS flow rate)
No more than −0. 5% FS/0. 1 MPa ±1 digit (5 to 100% of FS flow)
No more than −0. 5% FS/0. 01 MPa ±1 digit (5 to 100% of FS flow)
1 current output: 4 to 20 mA (Output range: 3. 2 to 20. 8 mA)
Fixed output during alarm (up): 21. 6 ±0. 4 mA (initial default, modifiable by setting)
Fixed output during alarm (down): 0. 0 ±0. 4 mA fixed
Allowable load resistance: 300 Ωmax.
Maximum output current: 24 mA max.
Within 1. 5 s (For 0 →100％FS step input, time to reach 95% of maximum value, Calculation cycle: 50 ms)
Rc 1/4 Rc 1/2 Rc1 Rc1 1/2 Rc2
1 open collector output: 30VDC, 50 mA max.
One of the following functions can be selected.
・Instantaneous flow rate upper limit, lower limit, range
・Integrated flow rate countup, countdown
・Alarm generation
・Integrated pulse output (selection of three pulse weights)
Medium
Port size
Measurement flow rate range
Note 6
ℓ/min (normal)
Minimum sensitivity ℓ/min (normal)
Maximum flow rate range ℓ/min (normal)
Display resolution
Note 5
Instantaneous flow rate
ℓ/min (normal) Integrated flow rate
ℓ/min (normal)
Maximum display range m
3
/h (normal)
m
3
/min (normal)
㎏/h
Instantaneous flow rate display accuracy
Instantaneous flow rate display repeatability
Temperature characteristics
Operating pressure
Pressure characteristics 0 to 1MPa
Operating pressure
−0. 07 to 0 MPa
Instantaneous flow rate
Operating pressure
display Change amount Note 8
0 to 1MPa
at installation attitude 2
Operating pressure
−0. 07 to 0 MPa
Instantaneous flow rate
Operating pressure
display Change amount Note 8
0 to 1 MPa
at installation attitude 3
Operating pressure
−0. 07 to 0 MPa
Operating pressure range
Operating temperature range
Operating humidity range
Storage temperature range
Storage humidity range
Proof pressure
External leakage amount
Rated voltage
Power supply voltage range
Consumption current
Calculation cycle
Instantaneous flow rate output
Note 10
Response time
Switch output
Note 11
No more than ±0. 25% FS/0. 01 MPa±1 digit (2 to 40% of FS flow rate)
No more than ±0. 55% FS/0. 01 MPa ±1 digit (40 to 100% of FS flow rate)

- 17 -
Note 1: (normal) is a calculated flow rate value for 0℃ 101. 325 kPa (abs).
2: FS flow rate indicates the maximum flow rate of the flow meter range.
3: RD stands for "reading".
4: A minus (−) flow rate value indicates a back flow rate (flow in the direction opposite that indicated by the flow meter arrow).
5: Regardless of the unit of display and the decimal point position, this indicates resolution from the lowest display digit.
6: A flow rate inside of parentheses ( ) is for installation attitudes 2 and 3.
7: This accuracy is a value representing instantaneous flow rate display accuracy along with instantaneous display repeatability.
8: See the installation attitudes on page 4.
9: Replacing the bypass unit with a new unit causes instantaneous flow rate display accuracy to become ±5％FS ±1 digit. (FAS-030, FAS-060, FAS-120)
10: The back flow side cannot output.
11: Back flow side settings cannot be configured.
0.4 0.4 0.5 0.7 1.1
Specifications
FAS-002 FAS-005 FAS-030 FAS-060 FAS-120
Model
Item
Data recording
Insulation resistance
Cable
Installation attitude
Protective structure
Gas contact portion Main channel
material Bypass unit
Gasket
Bypass unit case material
Load mass kg
Semiconductor non-volatile memory EEPROM
Recorded data: Function settings, parameters, integrated values, etc.
50 MΩ min.
Between connector pin and main channel or mounting bolts by 500VDC megger
Option (with connector, oil resistant, flame retardant cable UL2464 EN standard)
See "Installation attitudes" on page 4.
IP65 (JISC0920 and IEC529) splash-proof and dust-proof construction assuming indoor installation.
Aluminum alloy (anodized)
SUS304, PBT, H-NBR (hydrogenated nitrile rubber)
H-NBR (hydrogenated nitrile rubber)
Modified PPO
Order Codes
Additional Parts
●Bypass unit
(For use with FAS-030, -060, and -120 only.)
FAB
■Cable with connector (Yamatake Corporation)
FAK-2L
FAK-5L
(Cable length: 2000 mm)
(Cable length: 5000 mm)
FAS - - --
Mounting bracket Note
Blank: None
B: With mounting bracket
Note: Mounting bracket is available for FAS-002, -005, and -030 only
Flow rate range
002: 0 to 200ℓ/min (normal)
005: 0 to 500ℓ/min (normal)
030: 0 to 3000ℓ/min (normal)
060: 0 to 6000ℓ/min (normal)
120: 0 to 12000ℓ/min (normal)
Flow Meter
FA Series
Connector cable length:
Blank:No cable
2NL :2000 mm
5NL :5000 mm
Inspection Certificate of
Verification
Blank: None
T:With Inspection
Certificate of Verification
●Mounting bracket
(For use with FAS-002, -005, and -030 only.)
B-FAS

- 18 -
Pressure Loss
● FAS-002
50 2000 100 150
Flow rate R /min (normal)
6
2
4
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
100 4000 200 300
Flow rate R /min (normal)
Pressure loss kPa Pressure loss kPa
20
5
10
15
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
● FAS-005
100 5004000 200 300
Flow rate R /min (normal)
15
5
10
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
200 10008000 400 600
Flow rate R /min (normal)
60
20
40
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
Pressure loss kPa Pressure loss kPa
● FAS-030
500 300025002000 0 1000 1500
Flow rate R /min (normal)
20
5
10
15
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
1000 6000500040000 2000 3000
Flow rate R /min (normal)
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
80
20
40
60
Pressure loss kPa Pressure loss kPa
● FAS-060 20
5
10
15 0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
1000 600050004000 0 2000 3000
Flow rate R /min (normal)
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
80
20
40
60
2000 120001000080000 4000 6000
Flow rate R /min (normal)
Pressure loss kPa Pressure loss kPa
● FAS-120
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
25
5
10
15
20
2000 12000100008000 0 4000 6000
Flow rate R /min (normal)
0.1 MPa
Primary side pressure
0.7 MPa
0.3 MPa
0.5 MPa
0
100
20
40
60
80
4000 240002000016000 0 8000 12000
Flow rate R /min (normal)
Pressure loss kPa Pressure loss kPa

- 19 -
Dimensions (mm)
2-Rc1
48
23.5
（60.5）
90
13.5
24
48
27
79.8
1.5
47
23.5
（ ）
Cable with connector (option)
-2NL: Cable length 2000 mm
-5NL: Cable length 5000 mm
(φ6 ) 
M12 connector
IN OUT
(threaded mounting hole)
2 - M4 x 0.7, depth 7
87.8
90
78
75 63
4.5
5.5
Mounting bracket (-B)
●FAS-030
FAS-002: 2-Rc1/4
FAS-005: 2-Rc1/2
(threaded mounting hole)
2 - M4 x 0.7, depth 7
（46.5）
15
34
75 47
13.5
24
48
27
65.8
1.5
73.8
23.5
IN OUT
(φ6)
90
78
75 63
4.5
5.5
Mounting bracket (-B)
M12 connector
（ ）
Cable with connector (option)
-2NL: Cable length 2000 mm
-5NL: Cable length 5000 mm
●FAS-002・FAS-005