FlexLine, 290
Technical Data
14.7
Scale Correction
Use of scale
correction
By entering a scale correction, reductions proportional to distance can be taken into
account.
•
Atmospheric correction.
•
Reduction to mean sea level.
•
Projection distortion.
Atmospheric
correction
The 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
For highest precision distance measurements, the atmospheric correction should be
determined with:
•
An accuracy of 1 ppm
•
Air temperature to 1°C
•
Air pressure to 3 mbar