15
Applications
DNA10
Mainly for technical levelling tasks.
DNA03
Technical levelling and precision levelling.
Staff selection
Measuring accuracy depends on the staff used in
combination with the instrument. Use standard
staffs for low to medium range accuracy and invar
levelling staffs for the highest precision.
Range of application
•
Simple measurements using staff and distance
readings
•
Line levelling
•
Sureying and set out intermediate points.
•
Online operations with a computer.
Line levelling
Dependent on the required accuracy the same rules
for levellling and regulations within the given coun-
tries apply as for optical levelling.
Adhere to the following general rules:
•
Maintain same target distance for back and
foresight.
•
Measure a fore and back run and check it by
the error after the closing point.
Exclusively for precision levelling:
•
Limit target distance, < 30m.
•
Minimum ground clearance of >0.5m required
to minimize refractionary influences of ground
proximity.
•
Double observance (BFFB, aBFFB) to increase
the reliability of the measurement and to reduce
possible errors caused by the staff sinking.
•
Applying alternating observations procedures
(aBFFB = BFFB FBBF) to eliminate horizontal
tilt (residual error of the automatic
compensator).
•
Use an umbrella in strong sunlight.
Содержание DNA 10
Страница 1: ...Leica DNA03 DNA10 User Manual Version 2 0 English ...
Страница 125: ...125 File Displays the file for checking IMPORT Start data import NEWJOB Create new job ...
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