Fuji Electric FWD User Manual

Ultrasonic Flowmeter for Air

Type: FWD

Ideal for proper management for compressor etc…!

Abundant applicable pipe diameters

Applicable pipe diameter 25mm up to 200mm.

No energy loss due to no pressure loss

Measurement principle is ultrasonic method. There is no pressure loss without protrusion in the pipe.

No need of filter such as mist separator thanks to FWD has high resistance to oil mist

Accurate flow rate measurement including oil mist. Strong durable and reliable to use.

No need of power source installation work by means of battery driven

Lithium-battery build-in type (approx. 10 years operating) is provided without painful wiring work of the power.

Flow rate conversion available

Conversion from an actual flow rate to a flow rate at normal conditions (0°C, 1 atm) or user-defined conditions.

Capable of forward/reverse measurement and output

Nominal diameter

25 and 32mm

Nominal diameter
40 to 80mm

Nominal diameter
100 to 200mm

21A1-E-0019a

Airflow rate measurement supported by ultrasonic method!

"Visualization" is supported meeting customer's demands.

Nominal diameter 25 and 32mm

(screwed type)

Nominal diameter 40, 50, 65 and 80mm

wafer connection type)

(

Features

No energy loss due to no pressure loss.

Ultrasonic method is adopted as a measurement principle.

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There is no pressure loss due to no protrusion in a pipe.

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High durability thanks to it has strong resistance to oil
and mist.

Strong structure to oil ,mist and fluid containing dust due to no moving parts.

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Capable of using even with old pipe and refueling type compressor.

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Note) In case of a large amount of oil and mist contained, a vertical piping is

recommended to use.

Capable of forward/reverse measurement and output.

Capable of forward/reverse measurement and output according to

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measurement setting.
Comprehending an using air rate where flows between factories, also

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applicable to loop pipe.

Abundant output functions enables a system
management/control.

Not only unit pulse but also 4 to 20mA DC analog output and upper /lower

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alarm output are provided.

Note) When 4 to 20mA DC analog output is selected, instantaneous flow rate,

pressure and temperature can be switched in the field.

Capable of detecting the air leakage.

Nominal diameter 100,150, and 200mm

(flange connection type)

No need of power source installation work by means
of battery driven.

Build-in battery type (10 years operating) is also provided which

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eliminates painful power source installation work.

Note) Battery driven type is to indicate only.

1: 60 Wide range ability

Having wide range ability enables little amount of flow rate to be

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measured accurately.
Furthermore, it realize that wide rage with 1:400 from sensitive flow rate
(beginning of the measuring flow rate) to maximum flow rate.

Easy to read display

LCD digital display with large size of characters allows to read easily and

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capable of reading an accumulated flow rate and instantaneous flow rate
simultaneously.
Additionally, indication part can be rotated in 90 degrees in the field.

Display

Measurement error indicator

Flow rate type
Select among

Normal/Standard/
Blank (actual flow rate)

Blinker
tells you that flow is

detected

Flowmeter life indicator (for battery-powered type only)

Communication error
indicator

Gas type (Air or N2)

Main display:
Accumulated flow rate

Sub display:
Instantaneous flow rate

Principle

Excellent repeatability "Transit Time" Method.

Two ultrasonic sensors are installed on the side of flow entrance
and exit for flow meter.
When liquid flows in the direction of the arrow as shown on the
diagram, difference of transit time by flow velocity occurs between
sound waves generated from flow entrance and exit.
This time lag is using for detecting the flow velocity of the fluid and
calculating the volumetric flow according to cross-section area of the
flow meter and flow velocity.
Furthermore, capable of converting a flow rate into the one at
normal or standard conditions by means of built-in pressure sensor.

Application example

Air valve

Compressor FWD

If you are to order the built-in battery type (7th code “B”),

Capable of detecting the air

1

leakage.

When compressor is operated with closing
valve, at the place where flow rate is
measured air leakage occurres.

Connecting to Multi Measurement Unit (FeMIEL) allows "visualization"

2

furthermore and saving
energy.

Multi Measurement Unit (FeMIEL) is capable
of monitoring a power consumption and
flow rate simultaneously, additionally,
communicating PC through Ethernet.

Multi Measurement Unit (FeMIEL)

This unit is applicable to multi measurement
using PT,CT, Pulse, Analog and Contact
input.
Built-in memory can store one year volume
of data (when every 5 min. measurement cycle)
Compact size with front dimension 96 x 48mm.

Compressor FWD

Power consumption

Compressor

FWD

Air valve

Ethernet

Air flow rate

PC

Multi Measurement Unit (FeMIEL)

Available to comprehend the used amount of air

3

for each building, floor, line in the factory.

Code symbols

Digit

<Nominal diameter(mm)>

4

25

5

32

6

40
50
65
80
100
150
200
<Power supply>

7

24V DC
Built-in battery
Modification No.

8

<Fluid to be measured>

9

Air
Nitrogen
<Power supply cable>

10

None
5m
20m
<Instruction Manual>

11

None
Japanese
English

Notes: 1.Applicable pipe diameters for nitrogen measurement is
from 25 to 80 mm.
 2.
you do not need a power cable, so select “none” in the
10th code.

FWD

Specifications Note

Note1

Note2

Air flow rate

Line A Line B Line C

Connection diagram

7 8 9 10 114 5 6

2

5

2

0

2

3

0

0

4

0

0

5

0

5

6

0

0

8

0

0

0

1

0

5

1

0

0

2

D
B

2

A

N

0
5
2

0
1
2

Connector

Flow meter

Accessory Part

Nominal diameter Accessory
25, 32mm M4 Hexagonal wrench
40, 50, 65, 80mm
Flange gaskets, Bolt set
100, 150, 200mm

Shield cable

White

Yellow

Red

Green

Black

Note) No need if the integrators have their power
source.

M4 Hexagonal wrench, Center adjusting collar,

M4 Hexagonal wrench, Center adjusting collar

(External power supply type)

Integrator

Open drain output 1:
Unit pulse (Forward flow)

Open drain output 2:
Unit pulse (Reverse flow),
alarm output

Power supply (24V DC)

4 to 20mA DC

E

Integrator, exc.

＋

Receving

instrument

−

load

load

Note Note

Information in this catalog is subject to change without notice.

Specification

H

W

øD

øC

t

H

130

W

144

øD

JIS10K Flange

n-øh

H

W

øD

øC

t

JIS10K Flange

n-øh

Nominal diameter (mm) 25,32,40,50,65,80,100,150,200
Power supply 24V DC±10% or Built-in battery type (battery life : approx.10years at 20˚C)
Power consumption 24V DC : 1.5W or less
Applicable fluid Air or Nitrogen (Setting can be changed on site)
Temperature and humidity of fluid -10 to 60˚C, 90%RH or less
Working pressure 0 to 1MPa (gauge pressure)

Nominal diameter

(mm)

25 ±0.6 to 35 ±3.5 to 35 m
32 ±1.1 to 65 ±6.5 to 65 m

Flow-rate range (actual flow)
Accuracy

Accuracy of conversion into NORMAL

Main display

Display
(switched by button)

Sub display

Output signal
(not available for
battery driven type)

Current output

Contact output

Nominal diameter 25,32mm

Connection method

Nominal diameter 40 to 80mm
Nominal diameter 100 to 200mm

Pipe condition
(straight pipe length)

Nominal diameter 25,32mm

Nominal diameter 40 to 200mm

40 ±1.3 to 80 ±8 to 80 m
50 ±2.5 to 150 ±15 to 150 m
65 ±4 to 240 ±24 to 240 m

80 ±5 to 300 ±30 to 300 m
100 ±10 to 500 ±50 to 500 m
150 ±24 to 1200 ±120 to 1200 m
200 ±40 to 2000 ±200 to 2000 m

FWD025…FWD080: ±2.5% of rate (at 500 kPa, 25°C)
FWD100…FWD200: ±2.0% of rate (at ≥ 300 kPa)

"Forward or Forward/reverse display mode"

Diameter 25 to 80mm : Accumulated flow rate (m

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Trip accumulated flow rate (m
Diameter 100 to 200mm : Accumulated flow rate (m

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Trip accumulated flow rate (m

Diameter 25 to 80mm : Instantaneous flow rate (m

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Pressure (kPa) 5digits, Temperature (˚C) 3digits.
Diameter 100 to 200mm : Instantaneous flow rate (m

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Pressure (kPa) 5digits, Temperature (˚C) 3digits.

4-20mA DC(±0.5% FS), Load resistance : 400Ω or less, current output limit: 22mA
You can switch the output on-site among instantaneous flow-rate, pressure, and temperature.

2 open drain outputs

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Maximum load : 24V DC, 50mA, Maximum frequency : 10Hz, Duty : 35 to 65%
Output1: Unit pulse (forward), Output2 : Unit pulse (reverse), Upper/lower alarm, device error

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Screw connection (25mm : Rc1, 32mm : Rc1-1/4)
Wafer (installation between JIS10K flanges)
JIS 10K flange
Upper stream 20D or more, downstream 5D or more

When using with forward/reverse display mode, both of upper / lower stream 20D or more
Upper stream 10D or more, downstream 5D or more

When using with forward/reverse display mode, both of upper / lower stream 10D or more
Installation position Horizontal position or vertical position
Material of fluid contacting part Flow meter body : Aluminum alloy, PPS, fluoro-silicone rubber etc
Mass Shown on Outline diagram
Installation place Indoors and outdoors (conforming to IP64)
Storage temperature -20 to +70°C, No dew condensation

Flow rate range

3

/h)

(m

3

3

±2.0% of rate ±5.0% of rate

) 8digits, Instantaneous flow rate (m3) 7digits

) 9digits, Instantaneous flow rate (m3) 7digits

Accuracy

3

/h ±0.6 to 3.5 m3/h ±0.1

3

/h ±1.1 to 6.5 m3/h ±0.2

3

/h ±1.3 to 8 m3/h ±0.2

3

/h ±2.5 to 15 m3/h ±0.4

3

/h ±4 to 24 m3/h ±0.6

3

/h ±5 to 30 m

3

/h ±10 to 50 m3/h ±2.6

3

/h ±24 to 120 m3/h ±5.0

3

/h ±40 to 200 m3/h ±9.0

3

) 9digits,

3

) 10digits,

3

) 5digits,

3

) 5digits,

Low flow cutoff

(m

3

/h ±0.8

3

/h)

Outline diagram

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Nominal diameter 25 and 32mm (screwed type)nNominal diameter 40 to 80mm (wafer connection type)nNominal diameter 100 to 200mm (flange connection type)

130

144

20 20

147

Type Mass (kg)

FWD025 1.7
FWD032 1.6

(unit : mm)

162

80

Rc1 (FWD025)
Rc1 .1/4 (FWD032)

58

(Octagon)

130

Type

FWD040 76 163 81 1.1
FWD050 90 176 96 1.3
FWD065 108 197 117 1.6
FWD080 117 220 126 1.8

 Caution on Safety

* Before using products in this catalog, be sure to read their instruction manuals in advance.

Global Sales Section
Instrumentation & Sensors Planning Dept.

1, Fuji-machi, Hino-city, Tokyo 191-8502, Japan
http://www.fujielectric.com
Phone: [phone] Fax: [phone]
http://www.fujielectric.com/products/instruments/

144

W

W H

*Weights listed below are for the built-in battery type.

W

JIS10K Flange

øD

H

øC

f Df

C t nf h Mass (kg)

n-øh

H

f

D Mass (kg)

t

øD

Type

W H

FWD100 250 280 210 175 18 8 19 10.0
FWD150 300 341 280 240 22 8 23 18.3
FWD200 350 391 330 290 22 12 23 24.1

Printed in Japan 2017-4FOLS