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Logger Memory
The OnGuard can store over 21,000 readings in its logger memory. Data can be erased using the “Erase” button at the top of
the logger window. Below is the logger memory capacity given different log intervals.
Log Interval
Hours
Days
2 Minutes
700
29
5 Minutes
1750
72
15 Minutes
5250
218
30 Minutes
10500
432
60 Minutes
21000
864
120 Minutes
42000
1728
Please note: If power is lost on the OnGuard while logging data, then the logger will shut off. When power is
reestablished, download the data before resetting the logger as resetting the logger will erase previous data.
Alarm Conditions
There are two LED indicators on the OnGuard just to the right of the LCD display. The green LED will light if there are no
“Alarm Conditions”. If an alarm condition is detected, the red LED will flash. The conditions that can cause an alarm
condition are:
One or both sensors in the two-hour initialization mode Sensor
1 (copper) or Sensor 2 (silver) failure
Sensor 1 (copper) rate-of-change above limit
Sensor 2 (silver) rate-of-change above limit
Temperature above or below user-set limits
Temperature rate-of-change above limit Relative
Humidity above or below user-set limits Relative
Humidity rate-of-change above limit Battery level
below 10%
If there is an alarm condition active, and the unit is in “sleep” mode, the red LED will flash once per minute. If the unit is
awake (during reading), the red LED will flash one second on, one second off. If there is no alarm condition the green
LED will flash on the one minute interval and will flash at one second intervals during the reading period. To disable the
red LED from lighting due to temperature or relative humidity limits being exceeded, set those limits to values the unit will
not experience.
