Appendix 2 - Glossary
VFC400-USB User Guide
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Appendix 2 - Glossary
A
Accumulative Alarm
Temperature or humidity readings are above or below the configured threshold for the
total of time defined, but readings may not necessarily be sequential.
Active Alarm
An Alarm/Alert that has triggered, but has not been cleared.
Active Alert
An Alarm/Alert that has triggered, but has not been cleared.
Alarm
An alarm is an automatically generated event warning a user that environmental
conditions are no longer deemed safe for the monitored location. Alarms are generated by
the device based on alarm trigger conditions, such as thresholds, direction and delays. If
an alarm trigger condition is met, the device displays an alert and the software reports an
alarm event has taken place.
Alarm Activation Delay
This value is used for consecutive and accumulative alarms and defines the number of
recorded values that need to be alarm readings for the trigger condition to be met.
Alarm Event
Single occurrence of an alarm
Alarm Range
Temperature/humidity range that is outside the -> Non-Alarm range
Alarm Reading
Temperature or Humidity value that lies above the upper or below the lower alarm
threshold value
Alarm Threshold Value
The temperature or humidity value at which a reading is regarded as an alarm reading.
This can be an upper threshold or a lower threshold
Alarm Trigger Condition
Set of conditions that cause an alarm to be triggered. This requires a -> threshold value, a
-> direction, an -> activation type and a -> delay value.
Alarm Trigger Time
The time at which all conditions of an alarm were met
