When setting alarms it is possible to delay the sending of the alarm message.
This comes in handy when there is an unstable data file that imports error readings every now and then which goes outside the Alarm Threshold.
For example: Data is being imported with 1 hour interval, it has a sensors that sometimes imports one error value (-6999) that triggers the Alarm.
The Alarm Delay is set to 90 minutes so it needs two consecutive values outside the Alarm Threshold to trigger the alarm.
This is done in the alarm setup (Alarm -> Alarm Setup) and can be configured for each variable.