Xylem SDI-12 Data Logger iLink - Manual (Page 44)

44 iLink - Configuration and Support Utility
iQuest (NZ) Ltd - PO Box 15169 HAMILTON Tel: +64 7 957 8160 - Fax: +64 7 957 8162 - Email: [email protected]
Processing Mode
{Immediate, 1 Minute Avg, Full Period Avg, Wind Vector}
Select the processing that is required to generate the logged sample. The options are:
Immediate: the logged value is the instantaneous value as reported by the sensor at the time of
logging.
1 Minute Average: the logged value is the average of readings taken (according to the Sampling Rate)
over the 60 seconds immediately prior to the time of logging.
Full Period Average: the logged value is the average of all readings taken (according to the Sampling Rate)
over the Logging Period.
Wind Vector: wind vectors require independent processing due to the nature of the data.
Disable Logging
There may be occasions when a sensor, although active in the logger, does not require its values to be
logged. For example, the sensor is being used as an input for a control output, or the sensor is being
used as the base sensor for a derived output. Enabling this option will prevent data from the sensor being
logged.
Event Mode (Timed)
This setting applies only to rainfall sensors. If Event Mode (Timed) is selected, data will be logged at the
specified Logging Period (see above) but only if rainfall has occurred during the logging period in question.
Event Mode (Instant)
This setting applies only to rainfall sensors. If Event Mode (Instant) is selected, the Logging Period will be
ignored and data will only be logged as rainfall occurs.
Log Min/Max only
Enabling this setting will cause only the Minimum and Maximum readings over the specified Logging
Period to be logged.
Append Min/Max
Enabling this setting will cause the Minimum and Maximum readings over the specified Logging Period to
be appended to the normal logged data for the sensor.
Append Check Count
This setting will generally apply to rainfall sensors. Enabling the setting will cause a check count (total of
all readings for the Logging Period) to be appended to the normal logged data.
6.3.1.11 Alarms Setup
Alarm 1 – Alarm 6 Enable
Each sensor active in the logger can have up to 6 alarms set. To enable an alarm, simply check the box
next to the alarm required. Each alarm has a trigger point and a reset point.
Trigger
This is the value at which the alarm will be triggered and actioned. The value entered here should be in
real engineering units.