12
MODE: CURRENT WIND SPEED WITH WIND CHILL TEMPERATURE
Choice of temperature measurement unit:
See previous section, Wind Speed with Ambient Temperature
.
Wind Chill Information:
Low temperatures present a danger to the human body and this danger is aggravated
by the speed of the wind . The Xplorer 4 shows immediately the temperature felt by
the body and warns of risks of frostbite and hypothermia .
The wind chill factor is calculated on the
basis of ambient temperature and wind
speed . In the event of wind, it gives an
indication of the loss of heat by the body if
the temperature is less than 50°F (10°C) .
This is the formula which was adopted in
January 2003 by the United States Federal
Office for Meteorological Coordination with
the Meteorological Service of Canada (MSC),
the US Department of Defence (DoD) and
the United States National Oceanic and
Atmospheric Administration (NOAA) .
Example: an ambient temperature of 0°F and a wind of 20 mph act on your body as if the temperature
were -15°F!
Measuring cycle:
2 measurements per second with 0 .1°F/C resolution
Measuring range:
-99°F to 40°F (-37°C to 4°C)
(above 40°F (4°C), the temperature shown is ambient temperature)
Accuracy:
+/- 1°F (0 .5°C)
