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Standard Configuration Options
Alarm Configuration Options
The TRED30-16R 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
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:
the upper alarm is triggered when the temperature is 10.0 °C or above for an accumulative time of 10
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hours.
the lower alarm is triggered when the temperature is -0.5 °C or below continuously for 1 hour.
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Figure 2: Sample Alarm Configuration Settings for the TRED30-16R
Once an alarm has triggered, the alarm indicator ( ) remains shown until the alarm is cleared (see
an Alarm on
then it turns off and the marker for the previous day is shown (
against what is now the previous day. When midnight passes next, this marker will move to
Note: As soon as an alarm is triggered, the corresponding delay time (but not any others) resets to
zero and starts again. The alarm processing for all other alarm delays is not affected. Therefore,
accumulative or consecutive alarms will re-trigger, if the alarm conditions are met again, and the
Alarm Indicator ( ) and the Day Alarm Marker (
cleared. Clearing an Alarm does not reset any of the delay values.
Alarm Re-triggering
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Instant = one temperature reading is above (below) the threshold
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Consecutive = temperature readings are above (below) the threshold for the time defined in the activation delay without interruption
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Accumulative = temperature readings are above (below) the threshold for the total time defined in the activation delay time, but may not
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necessarily be sequential.
1
) and a delay time, if it is not an instant alarm.
page 17) or the unit is reconfigured. The day alarm marker
GlobalTestSupply
www.
TRED30-16R User Guide
) to indicate the alarm was registered
) will be shown, even if any previous alarm was
remains shown until midnight,
and so on.
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8
).
Clearing
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