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FW-F018-P-M_v0404_01_EN.docx
3.3.4
EXPLANATION OF SETUP-MENU 3 - ALARM
With these settings, it is determined how the flow rate will be monitored and the functionality of the
transistor / relay output (terminals 7-8) is set.
SETUP
FUNCTIONS
AND
VARIABLES
3
ALARM
3.1
ALARM SET
This function determines if the flow rate alarm values can be set at
both Operator level and SETUP-level or SETUP-level only, and if the
alarm values are visible at operator level.
If SETUP has been selected, the alarm values are still visible for the
Operator but cannot be changed. If Hide has been selected, the alarm
values are invisible.
3.2
FLOW ZERO
When the flow rate is zero, it is possible to ignore or disable the flow
rate monitoring. The following settings can be selected:
DEFAULT: in case of a low-flow rate alarm and zero flow, it will
switch the alarm output and indicate the alarm on the
display.
NO RELAY: in case of a low-flow rate alarm and zero flow, it won't
switch the alarm output but will indicate the alarm on the
display only.
IGNORE:
in case of a low-flow rate alarm and zero flow, it won't
switch the alarm output and nothing will be indicated on
the display.
3.3
ALARM LO
The low alarm is set with this setting. An alarm will be generated as
long as the flow rate is lower than this value.
With value 0 this function is disabled.
3.4
ALARM HI
The high alarm is set with this setting. An alarm will be generated as
long as the flow rate is higher than this value.
With value 0 this function is disabled.
Both flow rate alarms are visible in HART.
•
A low alarm will set device status bit 14.5
•
A high alarm will set device status bit 14.6
3.5
DELAY LO
An alarm generated by SETUP 3.3 “low” can be ignored during X-time
period. If the actual flow rate is still incorrect after this delay time, an
alarm will be generated.
3.6
DELAY HI
An alarm generated by SETUP 3.4 “high” can be ignored during X-
time period. If the actual flow rate is still incorrect after this delay time,
an alarm will be generated.
3.7
REL OUT
One transistor output is available to transmit the alarm condition or to
generate the scaled pulse output.
Assign with this function the type of signal to be transmitted:
low flow rate alarm, high flow rate alarm, both alarms or pulse output.
This setting is equal to setting SETUP 8.4.
