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8.2.18 Fluid Empty Alarm
Fluid empty alarm is the function to generate an alarm when a condition is detected in which fluid is
not filled or water level is not enough in the measuring pipe of the flowmeter.
If an alarm is generated, an alarm message is displayed and a signal can be output through DO.
Note
•
To output a fluid empty 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.”
•
In the case of LF232*F; Fluid empty alarm function is not usable. Set this function 'OFF'.
Setting the fluid empty alarm
Whether the fluid empty alarm should be used or not, and its detection sensitivity can be selected.
EMPTY
Fluid empty alarm setting
1: OFF
Fluid empty alarm not used
Fluid empty condition is not detected.
2: NORMAL
Sensitivity: Standard
Detection sensitivity is set to the standard level.
3: SENSITIVE
Sensitivity: High
Detection sensitivity is set to high sensitivity level.
4: SENSITIVE-H
Fluid empty alarm used
If a fluid empty condition is
detected, an alarm will be
output.
Sensitivity: Higher
Detection sensitivity is set to higher sensitivity
level.
* To use the fluid empty alarm, normally select 2:NORMAL (standard detection sensitivity). Select
3:SENSITVE or 4:SENSITIVE-H only when the fluid empty alarm is difficult to detect due to the condition
of the fluid to be measured or its piping condition.
Checking the fluid empty alarm On/Off setting
Proceed as follows to check whether the fluid empty alarm is used (On) or not (Off).
Switch operation
Display example
Description
L1: EMPTY ALM
1:NORMAL
Select L1:EMPTY ALM from the setting item selection menu.
The currently set fluid empty alarm On/Off setting appears.
L1: EMPTY ALM
Returns to the menu of setting item selection.
