Product Manual

Humidity
Type Protection
Instrument Max 95% non condensing.
The effects of condensation are to be effectively coun-
teracted by periodically drying out the instrument.
The following automatic corrections are made:
•
Line of sight error
•
Tilting axis error
•
Earth curvature
•
Standing axis tilt
•
Vertical index error
•
Refraction
•
Compensator index error
•
Circle eccentricity
9.6 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.
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
For highest precision distance measurements, the atmospheric correction should be determined
with:
•
An accuracy of 1ppm
•
Air temperature to 1°C
•
Air pressure to 3mbar
Atmospheric corrections in ppm with temperature [°C], air pressure [mb] and height [m] at
60 % relative humidity.
Automatic corrections
Use of scale correction
Atmospheric correction
Atmospheric corrections
°C
52 Technical Data