Leica FlexLine TS10, Руководство пользователя

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• Atmospheric correction.
• Reduction to mean sea level.
• Projection distortion.
The slope distance displayed is correct if the scale correction in ppm, mm/km,
which has been entered corresponds to the atmospheric conditions prevailing
at the time of the measurement.
The atmospheric correction includes:
•
Adjustments for air pressure
•
Air temperature
•
Relative humidity
For highest precision distance measurements, the atmospheric correction
should be determined with an accuracy of 1 ppm. The following parameters
must be redetermined:
•
Air temperature to 1 °C
•
Air pressure to 3 mbar
•
Relative humidity to 20 %
The air humidity influences the distance measurement if the climate is
extremely hot and damp.
For high precision measurements, the relative humidity must be measured and
entered along with the air pressure and the temperature.
ppm
+5
+1
+2
+3
+4
+0
-10 -20 0 10 20 30 40 50 °C
100%
80%
60%
40%
20%
TS_104
pp
m
Air humidity correction
[mm/km]
% Relative humidity [%]
C° Air temperature [°C]
Type Index n Carrier wave [nm]
Combined EDM 1.0002863 658
The index n is calculated from the formula of the IAG Resolutions (1999), and
is valid for:
Air pressure p: 1013.25 mbar
Air temperature t: 12 °C
Relative air humidity h: 60 %
Formula for visible red laser
· 10
x
4.126 · 10
-4
· h
-
0.29535 · p
Δ
D
1
= 286.338 -
002419_002
Atmospheric correc-
tion D D1
Air humidity
Air humidity
correction
Index n
Formulas
Technical Data 57