Fuji Electric FWD Series User manual

1
TABLE OF CONTENTS
Preface............................................................................................................................................... 2
Product Overview ............................................................................................................................. 2
Safety Instructions ........................................................................................................................... 3
1.Introduction ............................................................................................................................... 6
1-1.Scope of supply .............................................................................................................. 6
1-2.Name of each part........................................................................................................... 6
2.Installation ................................................................................................................................. 7
3.Setting Up ................................................................................................................................ 12
3-1.Measurement and indication setting........................................................................... 13
3-2.Output setting (for external power supply type) ........................................................ 14
4.Display ..................................................................................................................................... 16
4-1.Button operations ......................................................................................................... 16
4-2.Operation modes .......................................................................................................... 18
4-3.Setting items ................................................................................................................. 21
5.Wiring (External Power Supply Type).................................................................................... 27
6.Operation ................................................................................................................................. 29
7.Alarm........................................................................................................................................ 30
7-1.Aberration in flow measurement ................................................................................. 30
7-2.Aberrant pressure value............................................................................................... 31
7-3.Aberrant temperature value ......................................................................................... 31
7-4.Memory aberration........................................................................................................ 32
8.Power Interruption (External Power Supply Type) ............................................................... 33
9.Battery Life (Built-In Battery Type) ........................................................................................ 34
10.Troubleshooting...................................................................................................................... 35
11.Outline Diagram ...................................................................................................................... 37
Warranty and Maintenance ............................................................................................................ 38

2
Preface
Thank you very much for purchasing the Ultrasonic Flow Meter for Air FWD this time. Please be sure
to read this Instruction Manual to use this product correctly and safely and to prevent failures.
Please arrange for operators who actually use this product to know the context of this Instruction
Manual surely. This Instruction Manual is necessary for performing maintenance, too. Please keep
the Manual until this product is disposed of.
Product Overview
This flow meter is the ultrasonic flow meter for air capable of measuring the flow of air at pressure
from the atmospheric pressure to less than 1 MPa. The flow meter is installed to pipes by screwing its
taper pipe threads to the pipes or by being tightened between pipe flanges.
Screw connection type (Taper pipe threads): FWD025, FWD032
Wafer connection type (Installation between pipe flanges and by tightening with bolts):
FWD040, FWD050, FWD065, FWD080
Flange connection type (JIS 10K flange): FWD100, FWD150, FWD200

3
Safety Instructions
To ensure the safe use of this flow meter and to prevent a failure or an unexpected situation,
instructions to which attention must be paid are indicated with the following symbols.
Definitions
Danger
Incorrect handling by failure to follow instructions with this sign may lead to
imminent danger of death or serious injury.
Warning
Incorrect handling by failure to follow instructions with this sign may lead to death
or serious injury.
Note
Incorrect handling by failure to follow instructions with this sign may lead to injury,
properties loss (product damage, etc.), pecuniary loss, and/or punishment
according to a penal regulation for violation of laws and ordinances.
This symbol indicates that improper operation may results in an accident.
This symbol indicates prohibited acts.
This symbol indicates matters you should observe without fail.
General
Danger
Do not use for applications that require safety, such as nuclear, railroad, aircraft,
vehicle, playground equipment, etc.
Do not modify the product.
Do not use the product for foods, drinks, medical chemicals, etc., because it is
not of sanitary specifications.
Do not use the product in the atmosphere of an inflammable gas, etc., because it
is not of explosion-proof specifications.
Working environment and applicable fluid
Note
Do not apply any fluid other than air (compressed air used in factories) to this
flow meter. (The meter can be applied for nitrogen by factory setting before
shipment from our factory.)
Observe the temperature and humidity ranges (-10 to +60C and 90%RH or
lower) and pressure range (the atmospheric pressure to less than 1 MPa) in
use.
Avoid usage in an ambient containing a corrosive gas (chlorine, hydrogen
sulfide, etc.) and/or for an application to a fluid containing a corrosive gas.
This flow meter is not of a perfect waterproof structure (IP64). Do not install it at
a place that may be submerged in water.
Install the flow meter as far away from an electric noise source as possible. If it is
installed near the electric noise source, ground the shield of the external
connection cable.
The installation of a sunshade is recommended if the flow meter is exposed to
direct sunlight.

4
Operation
Note
This flow meter is not a specified measuring instrument defined in Japanese
measurement law. The product cannot be used for billing transactions or
certification.
When opening a valve to start fluid flow, open the valve not all at once but
gradually. Opening of the valve all at once may cause a failure of the flow meter
if a pressure difference is occurring between the upstream side and
downstream side of the valve.
Storage
Note
Store the flow meter at a place away from fire and not exposed to direct
sunlight.
Do not place any combustible material, inflammable substance and heating
body in the periphery of the flow meter.
Store this flow meter at a place which ambient temperature is -20 to +70C and
where no dew condensation occurs.
Piping
Warning
Do not ride on this flow meter using it as a foothold.
Do not hold the display section of this flow meter.
Note
In the case that a flow-regulating valve, etc., that may cause turbulence of the
flow is installed, its location must be on the downstream side of the flow
meter.
In the case of new piping, install the product after sufficient cleaning of the
pipe(s).
Vertical piping is recommended when mist, dust, etc. are contained in a large
amount. In horizontal piping, install the flow meter in such a way that the
display section faces upward.
Do not install the product in locations where strong compressive force, tensile
force, or load may be applied after its installation.
Arrange piping so that the flow direction conforms to the direction of arrow
indicated on the flow meter’s body.
Do not drop it or do not make it bumped. Do not apply excessive impact,
either.
When rotating the display section, do not apply a force in a direction other
than the rotating direction.
Keep hands off the ultrasonic sensors.

5
Wiring
Danger
When performing wiring work, follow the instructions in this Manual.
Use the product within the rating.
Do not use the product on a voltage exceeding permissible load.
Note
Do not place the product’s external connection cable together with or near to
power supply line(s) or power line(s), etc.
Electrical isolation of a remote counter (a receiver) from others is
recommended.
Do not apply an excessive tensile force to the external connection cable.
Ensure that the cable tip is not soaked in water during wiring work, etc.
When connecting the power supply wire of the external connection cable to an
external power supply, be careful not to short-circuit it. Use an external power
supply having a short-circuit protecting function.
Be sure to perform the wiring work in a state that power supply from the
external power supply is interrupted.
Do not perform operation and the wiring work with wet hands.
Disassembling and inspection
Note
Do not disassemble this flow meter.
Presence of fluid flow makes a pilot lamp light up in a normal state. In the case
of no indication of the pilot lamp, contact our branch or sales office nearby.
If mist and dust is contained in a large amount, disconnect the flow meter
periodically to check for the presence of dirt etc., and remove it as necessary.
Be careful not to touch the ultrasonic sensors during inspection.
Disposal
Warning
A lithium ion battery is incorporated in this flow meter. NEVER dispose of this
flow meter through general disposal routes. [Built-in battery type]
NEVER throw this flow meter into a fire. Otherwise, it may catch a fire or
explode. [Built-in battery type]

1.
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7
2. Installation
This flowmeter can be installed both indoors and outdoors and on a horizontal pipe and a
vertical pipe.
When a large amount of mist and/or dust exists inside pipe, the vertical piping is
recommended. When installing the flow meter horizontally, install it in such a way that the
display section faces upward.
This flow meter is not of a perfect waterproof structure (IP64). Do not install it at a place where
may be submerged in water.
The use of a sunshade is recommended if the flow meter is exposed to direct sunlight.
If you install the flowmeter in the place where it may get wet with rain, install the flowmeter so
that the display section does not face downward.
When you carry out the piping work, keep hands off inside the body and the ultrasonic
sensors (see Page 6) in particular.
Do not hold the display section of the flow meter.
Flow direction:
Mate the forward flow direction of a fluid to the arrow of the body.
It is recommended that Setting Up (Page12 onward) and changing Panel angle
adjustment: (Page 11) are carried out before installation.

8
Straight run requirements:
Figure 2-1 Recommended straight pipe run
(D: nominal diameter)

9
When the flow meter is installed near a pressure-reducing valve or a flow adjustment valve,
strictly observe the “required straight run L” as shown in Figure 2-2, because ultrasonic noise may
be generated inside the pipe.
Note that when the flow meter is installed at the downstream of the pressure-reducing
valve etc., there are many constraints. (If conditions are not satisfied, there is a possibility
that flow cannot be measured.)
Required straight run L (mm) =
10D  differentialpressure󰇛kPa󰇜󰇛 
⁄󰇜
20󰇛 
⁄󰇜󰇛0.8󰇜
Figure 2-2 Required straight pipe run for installation near valve