Monitoring Variations
In some applications, simply monitoring static threshold values is not sufficient.
Additionally, it may be necessary to monitor whether measurements fluctuate
too greatly within a certain timespan.
This diagram visualizes how Querx reacts to a window being opened. The
maximal fluctuation is set to 5°C within 30 minutes.
The sensor measures a temperature of 30°C at 0:20
(1)
. A window is opened at
0:50, causing the temperature to fall to 20°C rapidly. Once the temperature falls
below 25°C
(2)
, the device registers that a difference of more than 5°C has
occured in the last 30 minutes and triggers an alert.
The device senses that the difference in the last 30 minutes
(3)
is smaller than 5°C
and deactivates the alert at about 1:30
(4)
.
Open the configuration page for a sensor to configure its alerts
1.
Variation alerts can be configured for dropping and rising values.
2.
Enter the maximal
Value
by which you want to allow the temperature to
fluctuate.
3.
Enter the
Time
within which the temperature is permitted to fluctuate by the
value specified in the previous step.
4.
Click
Save
to apply your changes.
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