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The tendency indicators arrow is located beside the air pressure value to show the air pres-

sure tendency and provide a forecast of the weather to be expected by the decreasing or

increasing air pressure. The upward arrow means that the air pressure is increasing and the

weather is expected to become better. The downward arrow means that the air pressure is

decreasing and the weather is expected to become worse. The tendency indicator arrow will

not show up while the pressure without change within 30minutes. The base unit measure the air pressure per

10minutes. If the air pressure continuous increasing 3 times the arrow will be upward, if the air pressure continu-

ous decreasing 3 times the arrow will be downward, otherwise the tendency arrow will not show up.

The pressure threshold can be set to suit the user’s requirement for weather forecasting from

2-4 hPa (default 2 hPa). There is pressure sensitivity icon on the top left corner of LCD to indica-

te the pressure threshold by number of dots. For areas that experience frequent changes in air

pressure requires a higher setting compared to an area where the air pressure is stagnant. For

example if 4hPa is selected, then there must be a fall or rise in air pressure of at least 4hPa befo-

re the weather station will register this as a change in weather.

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Pressure tendency indicator

Pressure sensitivity setting for weather forecasting

02555Manual-2011:02555Manual-2011 25.06.2011 14:59 Page 21