GeoMax Zoom20 Pro Series User Manual

Technical Data Zoom20/30/35 Pro | 95
Humidity
Navigation Light Available for Zoom30 Pro.
Automatic corrections The following automatic corrections are made:
15.7 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 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 1 ppm
• Air temperature to 1°C
• Air pressure to 3 mbar
Atmospheric correc-
tions °C
Atmospheric corrections in ppm with temperature [°C], air pressure [mb] and height [m] at 60 % relative
humidity.
Type Protection
Zoom instrument Max 95% non condensing.
The effects of condensation are to be effectively counteracted by periodically
drying out the instrument.
Working range: 5m to 150m (15ft to 500ft)
Position accuracy: 5 cm at 100 m (1.97" at 330 ft)
• Line of sight error • Vertical index error
• Tilting axis error • Refraction
• Earth curvature • Compensator index error
• Standing axis tilt • Circle eccentricity
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
50°C50°C
40°C40°C
30°C30°C
20°C20°C
10°C10°C
0°C 0°C
-10°C-10°C
-20°C-20°C
550 mb
5000 m4500
600 650 700 750 800 850 900 950 10001050 mb
550 mb 600 650 700 750 800 850 900 950 10001050 mb
40003500 3000 2500 2000 1500 1000 500 0 m

GeoMax Zoom20 Pro Series Specifications

General

Brand	GeoMax
Model	Zoom20 Pro Series
Category	Measuring Instruments
Language	English