Chapter 4. FUNCTIONS
15
■ Display
● Instantaneous flow rate display and integrated flow display
The user can display either instantaneous flow rate or integrated flow total on the 7-
segment display.
The maximum number of digits displayed for instantaneous flow rate is 5. For the
integrated flow, 9 digits are displayed by showing the first 4 digits and the last 5
digits alternately. When the first 4 digits of the integrated flow total are displayed,
the leftmost digit of the 7-segment display indicates “H” for count-up integration
and “d” for count-down. Without this letter, the display can be recognized as show-
ing the last part of the integrated flow total.
● Peak instantaneous flow rate and lowest instantaneous flow rate
The peak instantaneous flow rate and the lowest instantaneous flow rate during the
measurement period can be displayed. The measurement period can be restarted by
operating the keys.
● Device information display
The model ID, firmware version, total integrated flow since shipping, and integrat-
ed flow before resetting are accessed with this function.
● Status indicator
[L/min]: Lit up during instantaneous flow rate display
[L]: Lit up during integrated flow display
[EV]: Lit up while event output is ON
[AL]: Lit up when an alarm occurs
● No-display mode
The flow rate display unit (7-segment LED, 5 digits) can be set so that it is off in
normal use. Even in no-display mode, measurement and outputs continue to oper-
ate. In no-display mode, both the L/min and L LED indicators remain on.
■ Flow rate display unit
The units for instantaneous flow rate and integrated flow can be changed.
Example:
The conversion formulas from [L/min] to other flow rate units are as follows:
m
3
/h = L/min ✕ 60 ÷ 1000
kg/h = L/min ✕ 60 ÷ 1000 ✕ 1.293 *
* The density of air at 0 °C and 101.325kPa (abs) is set at 1.293.
Handling Precautions
• If you change the flow rate engineering unit, affix the appropriate unit
label (included with the MCF) on top of the current label.
C02 setting 00 01 02 03
Flow rate 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 amount 100000000 100000.000 100000.000 100000.000
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