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30. EXPLANATION
172
The humidity has little influence, particularly on short distance measurements. The effect of humidity
should be considered in cases where it is very hot and humid and high precision measurements are
to be performed over a particularly long distance.
When taking humidity into consideration, enter the atmospheric correction factor calculated using
the following formula.
e (water vapor pressure) can be calculated using the following formula.
t : Air temperature (
°
C)
p : Pressure (hPa)
e : Water vapor pressure (hPa)
h : Relative humidity (%)
ew: Saturated water vapor pressure
282.324
0.294362 p
×
1 0.003661 t
×
+
------------------------------------------
–
⎝
⎛
0.04127 e
×
1 0.003661 t
×
+
------------------------------------------
⎠
⎞
10
6
–
×
+
Atmospheric Correction Factor (ppm) =
ew
6.11 10
7.5 t
×
(
)
t 237.3
+
(
)
----------------------------
×
=
e
h
ew
100
----------
×
=
Содержание SRX1
Страница 2: ...Li ion S Li ion This is the mark of the Japan Surveying Instruments Manufacturers Association ...
Страница 69: ...61 13 ANGLE MEASUREMENT The displayed horizontal angle HAR is the included angle between two points ...
Страница 175: ...167 29 REGULATIONS CE Conformity Declaration ...
Страница 176: ...29 REGULATIONS 168 ...
Страница 177: ...169 29 REGULATIONS ...
Страница 182: ...MEMO ...
Страница 183: ...JAPAN ...
Страница 184: ...1st ed 01 0609 Printed in Japan 2006 SOKKIA CO LTD ...