User Manual

Total Station Manual
201
3. Checkout and calibration
The instrument at the factory has to undergo a rigorous inspection and correction,
meeting the quality requirements. However, after long transport or environmental
change, its internal structure will be some impact. Therefore, the new purchased
instruments should be checked and calibrated before surveying to ensure the
precision.
3.1 Tube level
 Checkout
Refer to the chapter "Leveling instrument accurately by tubelevel"of" Setting up
theinstrument”
 Calibration
1. In the calibration, if the leveling bulbs diverge from the center, use the foot spiral
which parallels the leveling tube to adjust to make the bubble move half of the
distance to the center. For the remaining, use the calibration needle to turn the
level calibration screw (in the right of the water-level) to adjust the bubble to
the center.
2. Turn the instrument for 180 °, check that whether the bubble is in the center. If
the bubble is not centered, repeat Step (1) until the bubble to the center.
3. Turn the instrument for 90°, use the third foot screw to adjust the bubble to the
center.
z Repeat the Steps of checkout and calibration until the bubble in the center in
every direction.
3.2 Circular level
 Checkout
After the level tube calibrated correct, if the circular level bubble also in the
center, so there is no need to calibrate
 Calibration