Kofloc 8700 MC, Инструкция по эксплуатации

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MJ400306A1
23
(3) Using the upper/lower limit alarms
(meter type)
Overview of the upper/lower limit alarm action:
When PV: instantaneous flow rate changes as time passes, the flow rate alarm is
judged.
ＯＮ
Flow rate alarm
ＯＦＦ
AL. Hi
PV
Flow rate
Time
AL. dt
AL. dt
AL.Lo
0
①
②
AL. Hi : Flow rate alarm upper limit value （ D-15 ）
AL. Lo : Flow rate alarm lower limit value （ D-16 ）
AL. dt : Flow rate alarm delay time （ D-17 ）
PV : Instantaneous flow rate
① Upper limit alarm
When the “PV value” exceeded the “AL. Hi”, the flow rate alarm is turned on after the
passage of “AL. dt”.
② Lower limit alarm
When the “PV value” dropped below the “AL. Lo”, the flow rate alarm is turned on after
the passage of “AL. dt”.
※ For alarm codes, refer to 15. Alarm Codes and Corrective Actions.