Weather Conditions Measured/Calculated
Vantage Pro Manual
Page 55
UV (Ultra Violet) Radiation
Energy from the sun reaches the earth as visible, infrared, and ultraviolet (UV)
rays. Exposure to UV rays can cause numerous health problems, such as sun-
burn, skin cancer, skin aging, and cataracts, and can suppress the immune sys-
tem. The Vantage Pro can help analyze the changing levels of UV radiation and
can advise of situations where exposure is particularly unacceptable.
!! CAUTION:
Be aware, however, that the Vantage Pro’s UV readings do not take into account UV reflected
off snow, sand, or water, which can significantly increase the amount of UV to which you are exposed.
Nor does the Vantage Pro take into account the dangers of prolonged exposure to UV radiation. The
readings do not suggest that any amount of exposure is safe or healthful. Do not use the Vantage
Pro to determine the amount of UV radiation to which you expose yourself. Scientific evidence sug-
gests that UV exposure should be avoided and that even low UV doses can be harmful.
The Vantage Pro displays UV readings in two scales: MEDs and UV Index.
MED stands for Minimum Erythemal Dose, defined as the amount of sunlight
exposure necessary to induce a barely perceptible redness of the skin within 24
hours after sun exposure. In other words, exposure to 1 MED will result in a
reddening of the skin. Because different skin types burn at different rates, 1
MED for persons with very dark skin is different from 1 MED for persons with
very light skin.
Both the U.S. Environmental Protection Agency (EPA) and Environment Can-
ada have developed skin type categories correlating characteristics of skin with
rates of sunburn. Tables 3a and 3b below list these skin types.
T. B. Fitpatrick of the Harvard Medical School developed a categorization of
skin types 1 through 6 which were adopted by Environment Canada. These
skin types are detailed in Table 3b below.
T
ABLE
A1: EPA S
KIN
P
HOTOTYPES
S
KIN
P
HOTOTYPE
S
KIN
COLOR
T
ANNING
& S
UNBURN
HISTORY
1 - Never tans,
always burns
Pale or milky white; alabaster
Develops red sunburn; painful swelling, skin peels
2 - Sometimes tans,
usually burns
Very light brown; sometimes
freckles
Usually burns, pinkish or red coloring appears;
can gradually develop light brown tan
3 - Usually tans,
sometimes burns
Light tan; brown, or olive;
distinctly pigmented
Rarely burns; shows moderately rapid tanning re-
sponse
4 - Always tans;
rarely burns
Brown, dark brown, or black
Rarely burns; shows very rapid tanning response
Summary of Contents for and Vantage Pro
Page 6: ...Page 6 Vantage Pro Console Manual ...
Page 10: ...Welcome to Vantage Pro Page 10 Vantage Pro Console Manual ...
Page 16: ...Console Installation Page 16 Vantage Pro Manual ...
Page 18: ...Console Installation Page 18 Vantage Pro Manual ...
Page 44: ...Using the Console Page 44 Vantage Pro Console Manual ...
Page 63: ...Vantage Pro Manual Page 63 ...