Vaisala DRYCAP DMT340 SERIES User's Guide Page 181

  • Download
  • Add to my manuals
  • Print
  • Page
    / 191
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 180
Appendix A _______________________________________________________ Calculation Formulas
VAISALA _______________________________________________________________________ 179
The water vapor pressure is calculated using:
100
ws
w
P
RHP =
(7)
Parts per million by volume is calculated using:
( )
w
w
v
Pp
P
ppm
=
6
10
(8)
Symbols:
Td
=
dewpoint temperature (°C)
Pw
=
water vapour pressure (hPa)
Pws
=
water vapour saturation pressure (Pa)
RH
=
relative humidity (%)
x
=
mixing ratio (g/kg)
p
=
atmospheric pressure (hPa)
a
=
absolute humidity (g/m3)
T
=
temperature (K)
h
=
enthalpy (kJ/kg)
Page view 180
1 2 ... 176 177 178 179 180 181 182 183 184 185 186 ... 190 191

Comments to this Manuals

No comments