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COMFORT CONTROL
Thermo-Hygrometer
Features:
• Room temperature
• Indoor relative air humidity
• Maximum and minimum values
• Dew point
• Acoustic and optical alarm function in case of risk of
mould
The electronic COMFORT CONTROL Thermo-Hygrometer is
an ideal measuring instrument for checking room ambient
conditions.
Excessive room-air humidity can damage your health and
promotes the formation of damp patches and mould.
But excessively dry room air can also affect our well-being
and health in various respects. Skin, mucous membranes and
airways are adversely affected and pets, house-plants, woo-
den flooring and antique furniture may also suffer.
Active heating and ventilation can help achieve a comfort-
able and healthy living environment and may even save you
heating costs.
The interaction of temperature and air humidity:
If the room air is too humid, ventilation would at first
appear nonsensical in the winter, when the outside air is also
cold, damp and just as humid.
Cold air however, can absorb little or no moisture.
When this
air enters the living areas it becomes warmer. And then the
air can absorb much more water vapour. After just a few
minutes of giving a room an airing, you can see on the digi-
tal display how the relative humidity goes down.
Dew-point:
This interdependency of temperature and relative humidity
is expressed by means of the dew-point:
If the air is cooled continuously at constant absolute humi-
dity, then the relative humidity will steadily increase up to a
maximum of 100%. If the air is cooled further, then the
excess water vapour is separated out in the form of water
droplets.
If the measuring unit indicates an air temperature of 20° C
and a relative humidity of 65%, then the dew-point tempe-
rature will be 13.2° C. What does that mean? That the air, for
instance in your bedroom, will condense and form water
droplets at all points on walls and ceilings that are cooler
than 13.2° C, and that this may later lead to patches of
mould or damp.
If the air is at a relative humidity of say 40%, then the dew-
point temperature is only 6 °C. The walls and ceilings would
therefore have to be significantly colder for the air to reach
its dew-point and for water droplets to form.
How to achieve the correct temperature and air humidity:
Tips for active heating and ventilation:
• Check the dew-point! Surfaces of walls should not fall
below a temperature of 15° C!
• Do not turn the heating completely off when going out.
• Ventilate in all weather conditions, even if it's raining.
• Open the windows for a short time (room airing). A parti-
ally open window, for instance in the tilted position, does
not have the desired effect, wastes heating energy and
can even promote the formation of mould.
• If the room air is too dry, particularly in wintertime, then
electrical air humidifiers are recommended, since airing at
low outside temperatures will tend to decrease the humi-
dity further.
Duration of airing:
• A few minutes are mostly sufficient. Check the value indi-
cated on your COMFORT CONTROL!
TFA No. 30.5011 Anleitung 11/09 17.11.2009 15:10 Uhr Seite 5
