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5.9 DEW POINT
-
The dew point is the temperature below which the water vapor in air at constant barometric pressure
condenses into liquid water at the same rate at which it evaporates. The condensed water is called
dew
when it forms on a solid surface.
-The dew point temperature is determined by the temperature & humidity data from wireless 7-IN-1
sensor.
5.10 HEAT INDEX
The heat index which is determined by the wireless 7-IN-1 sensor’s temperature & humidity data
when the temperature is between 26°C (79°F) and 50°C (120°F).
Heat Index range
Warning
Explanation
27°C to 32°C (80°F to 90°F)
Caution
Possibility of heat exhaustion
33°C to 40°C (91°F to 105°F)
Extreme Caution Possibility of heat dehydration
41°C to 54°C (106°F to 129°F)
Danger
Heat exhaustion likely
≥55°C (≥130°F)
Extreme Danger
Strong risk of dehydration / sun stroke
5.11 WIND CHILL
A combination of the wireless 7-IN-1 sensor’s temperature and wind speed data determines the
current wind chill factor.
5.12 WIND
Avg wind speed,
Gust,Beaufort,
Wind direction reading
Wind direction
indicator
5.12.1 TO SELECT THE WIND DISPLAY MODE
In normal mode, press
[ WIND / + ]
key to switch between
AVERAGE
wind speed,
GUST
, wind
direction and
BEAUFORT
scale (BFT).
5.12.2 BEAUFORT SCALE TABLE
The Beaufort scale is an international scale of wind velocities ranging from 0 (calm) to 12
(Hurricane force).
Beaufort Scale
Description
Wind Speed
Land Condition
0
Calm
< 1 km/h
Calm. Smoke rises vertically.
< 1 mph
< 1 knots
< 0.3 m/s
1
Light air
1.1 ~ 5km/h
Smoke drift indicates wind direction.
Leaves and wind vanes are stationary.
1 ~ 3 mph
1 ~ 3 knots
0.3 ~ 1.5 m/s
2
Light breeze
6 ~ 11 km/h
Wind felt on exposed skin. Leaves rustle.
Wind vanes begin to move.
4 ~ 7 mph
4 ~ 6 knots
1.6 ~ 3.3 m/s
3
Gentle breeze
12 ~ 19 km/h
Leaves and small twigs constantly moving,
light flags extended.
8 ~ 12 mph
7 ~ 10 knots
3.4 ~ 5.4 m/s
