- 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,
ℓ
m
3
/h, m
3
m
3
/min, m
3
kg/h, kg
Instantaneous flow rate
200
12.0
0.200
15.5
Integrated flow rate 100000000 100000.000 100000.000 100000.000
Conversion from
ℓ
/min to each unit are shown below.
ｍ
3
/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 flow rate
upper limit switch
Outputs when the value set with the instantaneous
flow rate switch 1 parameter is exceeded.
Instantaneous flow rate
lower limit switch
Outputs when the value set with the instantaneous
flow rate switch 1 parameter is subceeded.
Instantaneous flow rate
range switch
Outputs when instantaneous flow rate is within the range set
by instantaneous flow rate switch 1 and instantaneous flow
rate switch 2.
Integrated flow rate
count up switch
Outputs when the value set with the integrated
switch setting parameter is exceeded.
Integrated flow 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 flow 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 [m
3
/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.
