Ambient Weather WS-1171A Manuale d'uso - Pagina 13

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4.5.2 Weather Icons

Sunny

The four weather icons are Sunny, Partly Cloudy, Cloudy and Rainy. There are also two weather

tendency indicators to show the air pressure tendency between the weather icons.

4.5.3 Weather tendency indicator

The weather tendency arrow is located between the weather icons to show the air pressure tendency

and provide a forecast based on increasing or decreasing air pressure.

The arrow pointing to the right indicates that the air pressure is increasing and the weather is expected

to improve. The arrow pointing the left indicates that the air pressure is decreasing and the weather is

expected to deteriorate.

The weather tendency is based on the pressure change since last six hours. If the weather is changing,

the weather tendency indicator (animated arrows) will flash for three hours, indicating the weather is

expected to change. If the weather conditions become stable and no new weather change conditions

are met, then the arrows will be fixed.

Example 1: Pressure is decreasing, weather is deteriorating.

Example 2: Pressure is increasing, weather is improving.

4.5.4 Storm threshold indicator

The storm threshold (the negative rate of pressure change signifying a storm is expected) can be

adjusted by the user from level 3 to level 9 (the default level 4 mbar/hour).

When negative rate of change of pressure is exceeded for 3 hours, the storm warning indicator will be

Version 1.10

Partly Cloudy

Cloudy

Rainy

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