User's Manual

Sensitech TempTale RF
2
System Installation Manual Revision 8
Page 14
5.3. Logging Data
The Datalogger has the capacity to store 1920 temperature records. When the 1920 record locations
are full, the Datalogger will stop taking new temperature records so no existing temperature records will
be overwritten. The time interval used to store data points is configurable based on the desired length
of operation and is programmed into the Datalogger when shipped.
When the Datalogger is running and no alarms have been triggered, the green LED will flash once every
four seconds. If the Datalogger is stopped and no alarms have been triggered, the green LED will flash
once every eight seconds. If there is no red Alarm LED and no green Status LED flashing, the device has
not been started and is not logging data points.
5.4. Alarms
Based on programmed parameters, the Datalogger makes its own decision as to whether it is in alarm
and if it is, it flashes a red LED to indicate that. Once the red LED is lighted because of an alarm, the
alarm will be sent to the TempTale RF
2
network infrastructure as soon as the Datalogger detects it.
If the red Alarm LED is flashing once every four seconds, this means an alarm was triggered and the
Datalogger is still running. If the LED flashes once every eight seconds, this means an alarm has been
triggered but the Datalogger has stopped taking data point.
There are four different alarm types and the logic behind each is listed below:
Alarm Type
Alarm Logic
Continuous events for high alarm
Alarm will trigger when a certain number of consecutive
temperature records are higher than a predetermined level.
Cumulative events for high alarm
Alarm will trigger when a certain number of cumulative
temperature records are higher than a predetermined level.
Continuous events for low alarm
Alarm will trigger when a certain number of consecutive
temperature records are lower than a predetermined level.
Cumulative events for low alarm
Alarm will trigger when a certain number of cumulative
temperature records are lower than a predetermined level.