WeatherHawk WM-350 WindMate Multi-function Weather Meter - Manual (Page 2)

Time
The Time mode will display the following
information: complete date, weekday and 12-24
HR format option.
To set the time, press and hold the Set/EL Key
for 3 sec. To adjust the current setting, press the
View Key. To go to the next option, press the
Mode Key. To exit and save the setting, press
the Set/EL Key.
Wind Speed
In the wind speed mode, you can take real time
wind speed measurements. Press View to
display Max-Avg, press View again to display
bar graph history. Press Set/EL to view each
increment. Press Mode to go to next function.
When taking wind measurements by hand, be
sure to keep the unit at an arm’s length from the
body with the display facing towards you, so the
wind enters the impeller through the rear. Use
the wind vane to orient the meter so you are on
the wind’s axis. This will give you the most
accurate measurement.
To get precise readings on a given vector, use
our optional wind tunnel with the unit mounted
on a tripod.
CAUTION: The WindMate
® is very accurate at
low and mid-range air speeds. Consistent uses
at very high speeds, such as from a car, will
damage the impeller’s bearing and reduce
accuracy. See below for impeller replacement.
Compass (hold, read, set vertically)
The compass feature can compute the cross
and head wind. Align the unit to the course
direction, press and hold the View Key to mark
the course direction. Then point the unit directly
into the wind to mark wind direction, press and
hold the View key. The unit will display cross
wind. Press View to display head wind. The
head wind may indicate a minus(-) or plus(+).
Minus will indicate the wind is coming from the
back. Plus will indicate wind coming from the
front. Press Mode to return to compass.
Compass Calibration for Declination &
Deviation
Compass Declination
Declination/Variation is the difference
between magnetic N and true N.
Depending on where you are on the earth,
the angle of declination will be different—
in some locations, the geographic and
magnetic poles are aligned so declination
is minimal, but from other spots, the angle
between the two poles is large. To adjust
your compass,
get declination information from a GPS or
www.ngdc.noaa.gov/geomagmodels/struts/calc
Declination .
Go to compass mode and hold Set/EL Key till
display shows HOLD TO SET. Use the View
Key to choose E or W. Then press Mode and
degrees will blink. Use View to change the
degrees. Press Set/El to lock in values.
Compass Deviation (only necessary if the
compass is near ferrous metals)
In compass mode press and hold Set/EL until
you see HOLD TO SET. You will see the
declination setting. Press Mode twice. Screen
will say Calibrate Compass? YES. Press Mode.
(If you do not need to calibrate, press View for
NO. Press Set/EL.) Hold the unit and turn
around slowly twice, 15 sec per each ¼ turn.
When calibration is complete, you will see 11
dots at the top of the screen. Press Set/EL and
the display shows “END.” If the display shows
“ERR” redo the calibration.
Using
Temperature/Windchill
Humidity/WetBulb/Dewpoint/DeltaT**
Density Altitude***
Choose the function you wish. Press View to
display Min/Max. Press View to display history
bar graph. Press Set/EL to view each
increment. Press View to return to normal
function or press Mode to go to the next.
**DeltaT is the difference between wet & dry
bulb temperature, used in agricultural spraying.
***Density Altitude is pressure altitude adjusted
for air temp and humidity, used for aircraft,
formulating race car fuel mix, & very long-range
shooting.
Comfort Index
Accuweather.com®Comfort Index™ is the effect
of temp, wind speed, relative humidity & sun
intensity on the human body. You can adjust
the formula based on sun intensity. The solar
factor has range from 0 to 3.0. Full sun = 3.0.
Heavy clouds = 0. The unit is preset for 1.5,
medium sun intensity.
To change, press and hold the Set/EL Key and
press the Mode Key again to go into solar
factor. Press View to select the desired value,
then press the Set/EL Key to confirm and exit
the setting mode.
Barometer and Altimeter
Understanding Barometric Pressure
High or low air pressure caused by weather, and
air pressure caused by elevation affect the
barometer’s reading. No matter what the
weather is doing, air pressure decreases with
height. Actual or STATION pressure is the true