ADS Environmental Services XiLog+ QR 775026 A0 - Manual (Page 49)

ADS XiLog+ System User Manual
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Deadband (applicable only to Threshold and Profile alarms)
This field displays the deadband value around the threshold. The logger will
generate a high alarm when the channel reading exceeds the High Threshold
plus the deadband. The alarm clears when the channel reading falls below the
High Threshold and the deadband. For example, entering a high threshold of
0.456 mgd and a deadband of 0.023 mgd will trigger a high alarm when the
flow exceeds 0.479 mgd and clear when the flow falls below 0.434 mgd. This
prevents the system from generating multiple alarms at locations that
experience flows that may oscillate around a threshold value.
If this feature is not relevant or required, enter a deadband of 0.
Note: While the deadband value always represents an amount when
establishing a Threshold alarm, the deadband can represent either an
amount or a percentage when using Profile alarms. To indicate that
the value in the Deadband field serves as a percentage, select the
Deadband is percentage checkbox after entering the value.
Debounce Delay
This drop-down list contains the options for selecting the debounce delay,
which represents the amount of time the flow must remain above the
designated high threshold (and deadband) or fall below the designated low
threshold (and deadband) before the system generates an alarm. Delay options
range from 1 to 60 minutes. For example, when selecting a debounce delay of
5 minutes, the flow must remain above the high threshold (plus the deadband)
for at least 5 minutes before the system will generate a high alarm.
Note: The debounce delay applies only when initiating alarms. It is
not designed for use in determining whether an alarm has been cleared.
Alarm Reporting
Reporting method options
Alarm reporting can occur through SMS or FTP (or both), and each alarm
trigger can be setup to occur through a different reporting method. Delivery
methods for alarms are independent from the delivery selections for collecting
logged data. For example, logged data can be sent via FTP and alarms can be
sent via SMS.