Hama EWS-800 Mode D'emploi page 8

Note – Temperature and humidity
• In terms of accuracy, the temperature and air humidity measurement is intended for private, non-
commercial use.
• In individual cases, the measured values displayed may differ slightly from comparison values, e.g.
values from a calibrated measuring device. Using the Basic and manual settings, you can adjust and
recalibrate the values for the room/outdoor temperature and/or the humidity.
• We recommend that you do not manually calibrate the measured values, press the SET button (28)
during manual setup to skip this step.
Note – Atmospheric pressure
• The absolute atmospheric pressure (abs) is a value measured at the installation location that cannot
be changed.
• The relative atmospheric pressure (rel) is the absolute atmospheric pressure at the installation location
corrected to the atmospheric pressure at sea level (msl).
• The reference value for relative atmospheric pressure is set to 1013.2 hPa as standard. For an exact
measurement, adapt the reference value to your location. You can manually set the reference value to
within a range of 919.0 hPa and 1080.0 hPa.
• Information on the current relative atmospheric pressure for you location is available on the Internet,
from your local meteorological office, on the radio, etc.
Note – Atmospheric pressure threshold value
• The weather forecast is based on atmospheric pressure changes, and you individually set their
threshold values between 2 hPa and 4 hPa. The threshold value is set to 3 hPA as standard.
• A decrease or increase in the atmospheric pressure by at least the set threshold value is registered as
a change in the weather.
• For locations with frequent changes in atmospheric pressure, we recommend you set a higher
atmospheric threshold value than for locations with a relatively constant atmospheric pressure.
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