- 7 -
Display
Connector
Main channel
IN
Bypass unit
Mounting bolt
q
r
t
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.
②
LED 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.
⑤
④
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 9 9 9 9 9 9 9 9 9
ℓ
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 details
C12 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.
