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6F8A0917
8.2.17 Flow Rate High/Low limit Alarm
The flow rate high/low limit alarm is the function to generate an alarm when the instantaneous flow rate exceeds a preset high limit value (or low limit value).
When an alarm is generated, an alarm message is displayed and a signal can be output through DO. Two outputs are provided each for high limit value and low limit value (4 outputs in total of high limit,
The following parameters can be set here:
(1)High limit alarm On/Off
(2)High limit value
(3)Low limit alarm On/Off
(4)Low limit value
(5)
(6)
(7)
(8)
Note
•To output a high/low limit alarm through DO, it is necessary to set the DO function for output. For how to set the DO function, see 8.2.14 “Digital I/O Function.”
High/low limit alarm On/Off
Whether the high/low limit alarm is used or not can be selected
Selection | Alarm operation |
|
|
1: ON | Alarm function provided |
| If the flow rate exceeds a selected high limit value (or low limit value), |
| an alarm is generated. |
|
|
2: OFF | Alarm function not provided |
| The selected alarm will not be generated. |
|
|
High/low limit value
A flow rate value (high/low limit value) to generate an alarm is set in percent of the maximum range (Range 1) flow rate value.
The high/low limit alarm value can be set within the range of −10% to 110% in increments of 0.5%.