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4.4.4
Dewpoint temperature - Td
The fourth parameter is the calculated dewpoint temperature,
which is derived from the ambient temperature and the relative
humidity.
Surfaces with a temperature below this dewpoint temperature
will be covered with condensation/moisture.
4.4.5
Delta-T - T
Δ
The last parameter is the Delta-T, T
Δ
, which is calculated by
subtracting the dewpoint temperature from the surface
temperature.
Alarm
When the Delta-T falls below the set limit (default setting 3°C),
the Alarm symbol displays. An acoustic alarm is also
triggered. The Alarm symbol displays as long as Delta-T is
lower than the set limit.
It is risky to paint in such a situation, as the slightest change in
climate conditions may cause condensation on the surface.
4.5
Batches
All of the DewCheck4 measurements are stored in batches. A
total of 8 batches are available that can be used for either
manual or interval logging. Batches can be numbered of given
names using the PC software.
Memory
The memory for manual logging can store up to 6,000 records
in a maximum of 8 batches. The memory for interval logging
can store up to 12,000 records in a maximum of 8 batches.
Each log record contains the following measurements: relative
humidity, ambient temperature, surface temperature, dewpoint
temperature, Delta-T, and time and date.
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