Ambient Weather WS-1172 Manuale d'uso - Pagina 12

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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

activated, and the clouds with rain icon and tendency arrows will flash for 3 hours indicating the storm

warning feature has been activated.

4.5.5 Pressure threshold setting

The pressure threshold (the negative or positive rate of change of pressure signifying a change in the

weather) can be adjusted by the user from level 2 to level 4 (default level 2 mbar/hour).

The lower the level pressure threshold setting, the higher sensitivity for weather forecast changes.

Locations that experience frequent changes in air pressure require a higher setting compared to

locations where the air pressure is typically stagnant.

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