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18
Site Sentinel™ 4 Installation and Operation Manual
WEB SETUP
Web Setup and Operation
“I/O” Setup Page
Temperature
Alarms Exit:
This option enables the emailing after exiting an alarm.
Temp Type:
This option specifies what scale will be displayed, Fahrenheit or
Centigrade.
Log Device:
This enables the email logging of temperature.
Delay Time:
The delay is in (0 to 999) seconds. This option specifies the wait
time from when a temperature is out of range before an alarm is
activated.
Low Temp:
This option specifies the LOW temperature alarm set point.
High Temp:
This option specifies the HIGH temperature alarm set point.
Hysteresis:
Hysteresis (deadband), This option specifies the hysteresis used
when evaluating alarm conditions. Hysteresis prevents alarms
from toggling excessively when temperature is at the set point.
This is due to normal fluctuation. For example, if the hysteresis
is set to 1 degree, and a high alarm is to occur at 91 degrees, the
hysteresis ensures that once the high alarm is triggered, it won't
go off until the temperature returns to below 91 degrees (90 - 1).
This reduces problems with small fluctuations in temperature
readings triggering multiple alarms. The hysteresis is also used
during low alarm conditions. If, for example, a low alarm is to
occur at 43 degrees and the hysteresis is set to 1 degree, then once
the low alarm is triggered, it won't go off until the temperature
returns to higher than 44 degrees (43 + 1).
NOTE:
After any item has been
changed, you MUST
press the “Save
Settings” button for
your changes to be
saved.
