In-Situ Tube 300R Telemetry System - Manual (Page 44)

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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.
In Incremental Mode, alarms and warnings occur when the difference between two
consecutive measurement values is less than the minimum threshold value or greater
than the maximum threshold value. This difference means the alarm threshold is a
slope instead of a fixed value.
The example shows three incidents labeled A, B, and C.
Incident A: An SMS alarm is sent on the third consecutive set of measurements where
the delta exceeds the alarm threshold (reading no. 6-7, 7-8, 8-9).
Incident B: No SMS alarm is sent. Only one consecutive set of measurements exceed
the alarm threshold, while the requirement set above is 3 consecutive measurements.
Incident C: No SMS alarm is sent. Only one consecutive set of measurements exceed
the alarm threshold, while the requirement set above is 3 consecutive measurements.
In this scenario, SMS alarms are disabled for the rest of the day after the third SMS
message is sent.