TFA KLIMA GUARD Mode D'emploi page 7

TFA No. 30.5010 Anleit_03_21
KLIMA GUARD
– Digital Thermo-Hygrometer
If the air is cooled continuously at constant absolute humidity, then the rel-
ative humidity will steadily increase up to a maximum of 100%. If the air is
cooled further, then the excess water vapor 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 temperature 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 stains.
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.
Wet-bulb temperature
The wet-bulb temperature is based on the psychometric measurement. Water
evaporating from the moistened wick on the wet-bulb thermometer cools the
thermometer bulb and lowers the temperature reading. The cooling effect of
the evaporation from the bulb depends on the amount of water vapor present
in the air.
Getting started
• Open the battery compartment and remove the insulation strip.
• A brief beep tone will sound and all LCD segments will light up for two
seconds.
• Pull off the protection foil on the display.
• The unit is now ready to use.
Display
• The upper row shows the indoor relative humidity, the lower row the room
temperature. The temperature unit can be changed from °C to °F by the
SET button.
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KLIMA GUARD
– Digital Thermo-Hygrometer
MAX/MIN values:
• Press the MODE button.
• MAX appears on the display
• The highest temperature and humidity values are displayed since the last
reset.
• Press the MODE button again.
• MIN appears on the display.
• The lowest temperature and humidity values are displayed since the last
reset.
• The instrument will automatically quit the MAX/MIN mode if no button is
pressed within a longer time or press MODE button again to return to the
actual display.
• Press the CLEAR button while the maximum and minimum values are dis-
played to reset the values to the present temperature.
Dew point and wet-bulb temperature:
• Press either ▲ or ▼ button in normal mode to change between dew point
(display Td), wet-bulb temperature (display Tw) and normal temperature.
In MAX/MIN mode, press ▲ or ▼ buttons to display the highest and low-
est values of these units.
Auto Shut Down
Press and hold the CLEAR button. AUTO OFF appears on the display. The dis-
play will shut down if no buttons are pressed for 12 minutes. To turn on the
product, just press any button. To remove this feature, press and hold the
CLEAR button, the AUTO OFF icon will disappear.
Set Alarms
• Press and hold the SET button.
Press either ▲ or ▼ button to toggle the low alarm limit to "ON". Press
SET button again, the display will show
button to toggle the high alarm limit to "ON". Now both the high and low
alarms are activated. The user can also select either one value.
ALARM OFF appears on the display.
ALARM OFF. Press either ▲ or ▼
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