DF5400HD-DN/IR
Rev. 1.0.2 | © 2018 Dallmeier | www.dallmeier.com
17
The built-in pressure equalization element of the device continuously
equalizes the internal pressure of the device to the ambient pressure.
Thus, the temperature and humidity difference between the housing
interior and the ambient air is balanced, and hence the formation of con
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densation is largely prevented.
Condensation Inside the Housing
Despite the built-in pressure equalization element, a sudden drop in tem
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perature (e.g. based on heavy showers or thunderstorms) may temporar
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ily cause water vapor (moisture) inside the housing, resulting in conden
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sation on the inner surface of the front glass.
In this case, activate the integrated IR lighting via the device’s WebConfig
user interface. Set the IR power to the highest level until the glass is free
of condensation due to the self-heating generated by the IR LEDs.
This phenomenon also occurs during winter commissioning when the
unit is brought from a warm storage room to the outside area.
As a result of the residual moisture inside the housing due to storage,
the glass may take longer (than during operation) to become fog-free
again.
Condensation on the Outside of the Housing
Condensation on the outside of the housing may form temporarily – usu
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ally in the early morning when the humidity level is high, as the ambient
air is warming faster than the outer surface of the housing.
This results in condensation on the outer surface of the front glass (like
dew on the grass).
This phenomenon is due to physical reasons and, therefore, does not
constitute a defect.
Summary of Contents for DF5400HD-DN/IR
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