E+E Elektronik HUMIPORT 05 IR Notice D'utilisation page 35

Manual
Using the alarm function
The alarm function is automatically active in the DP mode. The
alarm triggering and intensity is determined by the upper alarm
limit and the lower alarm limit.
These two alarm limits are calculated respectively from the
measured dewpoint temperature (TdP) and the thresholds, the
upper threshold (Hi) and the lower threshold (Lo), defined
individually in the configuration area CFG.
The addition sum of the dewpoint temperature (TdP) and the upper
threshold (Hi) forms the upper alarm limit (TdP + Hi). The
subtraction sum of dewpoint temperature (TdP) and lower
threshold (Lo) forms the lower alarm limit (TdP - Lo).
If the surface temperature drops below the upper alarm limit
(TdP + Hi), an acoustic alarm (buzzer) and optical alarm (laser
flashes) is triggered and increased in intensity proportional to
approaching the lower alarm limit.
The further the surface temperature drops, the faster the repetition
frequency of the buzzer and laser. The maximum repetition
frequency is triggered on reaching the lower alarm limit (TdP-Lo).
Example: The current dewpoint temperature (TdP) is +2 °C. You
define the upper threshold (Hi) with 5 °C and the lower threshold
(Lo) with 5 °C. The alarm then begins at +7 °C (TdP + Hi) and
reaches maximum intensity at -3 °C (TdP-Lo).
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