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In Absolute Mode, alarms and warnings occur when a measurement value is less than the minimum threshold value or greater than
the maximum threshold value.
The example shows three incidents labeled A, B, and C.
Incident A
: No SMS alarm is sent. Only two consecutive measurements exceed the alarm threshold, while the requirement set
above is 3 consecutive measurements.
Incident B
: An SMS alarm is sent on the third consecutive measurement exceeding the alarm threshold (reading no. 6).
Incident C
: An SMS alarm is sent on the third consecutive measurement exceeding the alarm threshold (reading no. 8, 9, 10). A
second SMS alarm is sent after the sixth consecutive measurement (reading no. 11, 12, 13). While another three consecutive
measurements are above the alarm threshold (14, 15, 16), no SMS alarm is sent because the maximum number of messages sent for
the same incident is set at 2.
In this scenario, SMS alarms are disabled for the rest of the day after the 10th SMS message is sent.
Probe Out of Range SMS Alarms in Incremental Mode
The Tube can send SMS (text) messages when alarms are triggered. SMS alarms are enabled in the General Information,
Parameters, and Functional Options section on the Alarms tab.
Below is an example situation showing when SMS messages would be sent for the "Reading from Probe Out of Range" alarm with
the following settings.
