Standard Configuration Options
TREL30-16 User Guide
13
Alarm Configuration Options
The TREL30-16 can display an alarm if either of the configured alarm trigger conditions
have been met. This is indicated on the display by showing the Alarm Indicator ( ) and the
Day Alarm Marker for
today (
).
Each alarm trigger condition consists of a threshold temperature value, an activation type
(which can be instant, consecutive or accumulative
2
) and a delay time, if it is not an
instant alarm.
If an alarm trigger condition requires readings to exceed an upper threshold temperature it
is called an
upper alarm
. If an alarm trigger condition requires readings to go below a
lower threshold it is called a
lower alarm
.
All alarm trigger conditions are configured in the Alarm Settings tab during configuration
of the logger with LogTag
®
Analyzer.
The screen shows an example where:
l
the upper alarm is triggered when the temperature is -70.0 °C or above for an
accumulative time of 10 hours.
l
the lower alarm is triggered when the temperature is -80.0 °C or below continuously
for 1 hour.
Once an alarm has triggered, the alarm indicator ( ) remains shown until the alarm is
cleared (see
) or the unit is reconfigured. The day alarm
marker
remains shown until midnight, then it turns off and the marker for the
2
l
Instant = one temperature reading is above (below) the threshold
l
Consecutive = temperature readings are above (below) the threshold for the time defined in the activation delay without
interruption
l
Accumulative = temperature readings are above (below) the threshold for the total time defined in the activation delay
time, but may not necessarily be sequential