DAVIS Weather Monitor II Guide de dépannage télécharger pdf (Page 25)

Wind Speed and Wind Direction

Weather Monitor II Page 21

3. Press CLEAR and hold it down.

The display will ﬂash several times, and then the old reading will be replaced by

the current temperature. As the temperature rises and falls, the high and/or low

will be updated.

4. Press any key to exit.

Note: High and low temperatures are independent of each other. Clearing the high temperature does

not clear the low temperature, and vice versa. You must clear each individually.

High and Low Temperature Alarms

For instructions on how to use the high and low temperature alarms, see

“Alarms” on page 30.

WIND SPEED AND WIND DIRECTION

The Weather Monitor II shows wind speed and wind direction in two places on

the display. They are always shown on the compass rose on the left hand side

of the display and can be selected to show on the right hand side.

About Wind Speed

Wind speed can be displayed in either miles per hour (MPH), kilometers per

hour (KPH), nautical miles per hour (KNOTS), or meters per second (M/S).

The wind speed readings on the right side of the display and in the compass

rose will always be in the same unit of measure.

The Weather Monitor II also records the highest wind speed at your location.

About Wind Direction

The compass rose is divided into 16 points, each corre-

sponding to a different compass point 22.5˚ apart. Wind

direction is indicated by a ﬂashing arrow at one of these

points. The right side of the display expresses wind

direction in degree readings.

The right side of the display can be set to display Wind

Direction in either high (1˚ increments) or low (10˚

increments) resolution. Low resolution is probably the

most practical setting since even a relatively steady

wind has turbulence and rapidly changing speeds. Low

resolution gives you a general indication of wind direction—whether the wind

is blowing from a northerly or northeasterly direction, for example.

Under certain circumstances, however, the change in wind direction is as

important as the direction itself. Under these circumstances, the Weather Mon-

itor II should be set to display in 1˚ increments. This change can be signiﬁcant

if, for example, you are trimming the sails of your sailboat

M/S

COMPASS ROSE

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DAVIS Weather Monitor II Guide de dépannage Page 25