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2. The weather forecast symbols may not reflect the current weather
condition. The symbols are forecasting the future.
3. A ' Sunny ' forecast covering the night-time reflects fine clear weather.
HOW TO READ THE PRESSURE TREND CHART
Stored memory of the barometric pressure changes are displayed on the
chart, in 5 steps indicating the pressure 1,3,6,12 and 24 hours ago. This
chart is plotted by comparing the past barometric pressure to the present
pressure. The scale on the shows the comparison result.
This gives you the pressure trend over the last 24 hours. The weather will
be getting better ( worse ) if this chart shows the bar marks moving up (
down ) towards the present time.
Important:
It is only possible to measure the barometric pressure trend properly if
your barometer remains at the same altitude.
When moving around at different altitude within a short time period, the
air pressure changes, the barometric pressure changes is not correct, until
the barometer has remained at a constant altitude for 24 hours.
However, please note again the accuracy of a weather forecast based on
the barometric pressure reading. It is considered to be about 70-75%.
HOW TO SET THE ALTITUDE
1. Press and hold the [ SET ] button for 2 seconds to set the altitude.
The 'ALT ' indicator will turn on with the altitude setting flashing
(display in meter).
Increase/decrease the altitude in steps of 10 meter by pressing [ ] or
[ ] button.
2. Press the [ SET ] button again to set the altitude. At this time the
previous pressure display will reappear. If the altitude has been changed,
the ' ALT ' indicator flashing (about 15 minutes ) until a new sampling
takes place and the pressure reading is then compensated with the new
altitude.
3. Press the [ SET ] button 6 times to confirm the setting you just entered
or wait for one minute for automatic exit.
Note:
For monitoring the local barometric pressure reading, the user needs
to select the 0 meter ( preset value ) for the altitude setting.
For monitoring the Sea Level barometric pressure reading at certain
altitude, the user needs to select the local alitiude ( -100 to 2500
meters ) for the altitude setting.
