Silva ADC WIND Manual Del Usuario página 18

10.0 Wind Speed Mode -
the propeller
blades are entirely
exposed to air
Propeller Closed
wind
display
Point the Propeller towards the wind direction
Before Using the Wind Speed Mode
Propeller Opened
wind
How Wind Speed is Measured
!
The ADC is equipped with a propeller that is
similar to a traditional aerovane.
!
When the propeller faces the wind, it
rotates and generates signal. This product
will pick up the signal and converts it into
wind speed.
Before and After Measuring a Wind Speed
!
Turn the ball-shape propeller by your thumb
and index finger until the propeller blades
are entirely exposed, and it is not sheltered
by the case.
! After a wind speed measurement, rotate the
propeller to a closed position to prevent dirt
from getting into it.
To Measure Wind Speed
!
Select Wind Speed Mode. Point the blades
directly towards the wind direction, and
make sure that the blades rotate freely.
!
When the wind passes through the propeller,
the blades rotate. The ADC starts to
measure, and shows the current, average
and maximum wind-speed readings.