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Chapter 4. FUNCTIONS
■ Output (4 to 20 mA output models MCF_______D01____ only)
The instantaneous flow rate is output as a 4 to 20 mA analog current. The span flow
rate (as displayed) can be changed by the parameter setup. The setting can be
changed in increments of 1 digit. By default a flow rate of 0 corresponds to 4 mA
and the full-scale flow rate is 20 mA.
■ Integration function
Either integration count-up or integration count-down can be selected in the func-
tion setup.
• If the integrated value exceeds 999999990, it reverts to 0 and counting contin-
ues.
• In the integrated countdown function, the integrated value decreases from a pre-
set value to 0. When it reaches 0, counting stops.
• The (count-up) integrated value is saved to nonvolatile memory every 10 min-
utes. Therefore, depending on when the power is turned off, up to 10 minutes of
integration data may be lost at shutoff. The integrated countdown value is not
saved to nonvolatile memory.
• To reset the integrated value, push and hold the []key and the []key at the
same time for 5 seconds or more while the integrated flow (either 4-digit or 5-
digit part) is displayed. The integrated count will change to 0. In the case of
countdown, the count is reset to the amount set in the integrated flow event
setup. When the integrated data is reset, the data before resetting is stored in
nonvolatile memory.
■ Event output (4 to 20 mA output models MCF_______D01____ only)
● Event type
The event type can be selected from the table below.
Event type Name Operation
Instantaneous Instantaneous flow rate Output turns on when the PV exceeds the value
flow rate switch upper limit set for instantaneous flow rate event 1 in the
parameter setup.
Instantaneous flow rate Output turns on when the PV falls below the
lower limit value set for instantaneous flow rate event 1 in
the parameter setup.
Instantaneous flow rate Output is on when the PV is within the range set
within range for instantaneous flow rate events 1 and 2 in the
parameter setup.
Integrated flow Integrated count-up Output turns on when the integrated flow
switch exceeds the value set for integrated flow event in
the parameter setup.
Integrated countdown Output turns on when the integrated data
becomes 0, decreasing from the value set for
integrated flow event in the parameter setup.
Integrated pulse Pulse output (a choice Outputs a pulse as determined by the event
output of 3 weights* can be output setting in the function setup. Pulse width
assigned to the pulse is selectable from 50, 250, and 500 ms.
output)
Alarm output Alarm occurrence Output turns on when an alarm occurs.
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