Tools; Check & Adjust; Overview; Preparation - Leica TS01 User Manual

11
11.1
11.1.1
Description
Electronic calibration
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Checking parts
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11.1.2
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84

Tools

Check & Adjust

Overview

Leica Geosystems instruments are manufactured, assembled and adjusted to
the best possible quality. Quick temperature changes, shock or stress can
cause deviations and decrease the instrument accuracy. It is therefore recom-
mended to check and adjust the instrument from time to time. This check
and adjust can be done in the field by running through specific measurement
procedures. The procedures are guided and must be followed carefully and
precisely as described in the following chapters. Some other instrument errors
and mechanical parts can be adjusted mechanically.
The following instrument errors can be checked and calibrated electronically:
Horizontal collimation error, also called line-of-sight error.
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Vertical index error.
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Compensator index error of the electronic level, transversal and longitud-
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inal.
For determining these errors, it is necessary to measure in both faces, but the
procedure can be started in any face.
The following instrument parts can be checked:
Circular level on the instrument and tribrach.
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Laser plummet.
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• Screws on the tripod.
During the manufacturing process, the instrument errors are carefully determ-
ined and set to zero. As mentioned, these errors can change and it is highly
recommended to redetermine them in the following situations:
Before the instrument is used for the first time.
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Before every high precision survey.
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• After rough or long periods of transport.
After long periods of work or storage.
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If the temperature difference between current environment and the tem-
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perature at the last calibration is more than 10°C (18°F).

Preparation

Before determining the instrument errors, the instrument has
to be levelled using the electronic level.
The tribrach, the tripod and the underground should be stable
and secure from vibrations or other disturbances.
Tools