Page
70
Appendix D — Humidity Equations and Conversion
Water vapor content expressed as parts per million by volume is
given by the following:
Expressing water vapor content as parts per million by weight (or
mixing ratio) requires multiplication of the above by the ratio of
the molecular weight of water to that of air as given by the
following:
See Figure 16 for a graphical conversion chart and Figure 17 for a
Psychrometric chart.
PPMV
10
6
e Td
(
)
P e Td
(
)
–
----------------------
=
PPMW
0.622
10
6
×
e
P e
–
-----------
=
Содержание HumiLab
Страница 43: ...Chapter 5 Maintenance and Troubleshooting Page 39 Figure 13 Mirror Check and Mirror Sensor Balancing Procedure ...
Страница 75: ...Appendix D Humidity Equations and Conversion Charts Page 71 Figure 16 Graphical Conversion Chart ...
Страница 76: ...Page 72 Appendix D Humidity Equations and Conversion Figure 17 Psychrometric Chart ...
Страница 80: ...Page 76 Appendix E Warranty information and return ...