24. CHECKS AND ADJUSTMENTS
The total station is a precision instrument that requires fine adjustments. It must be
inspected and adjusted before use so that it always performs accurate measurements.
Using “24.1 Plate level and circular level”
，
Check to ensure that the bubbles are accurately
in adjustment.
In addition, the instrument should be inspected with special care after it has been stored a
long time, transported, or when it may have been damaged by a strong shock.
24.1 Plate level and circular level
1
．
Checking and adjusting the plate level
●
Check
①
Place the plate level parallel to a line running through the centers of two
leveling screws (eg. A, B). Use these two screws to place the bubble in the
center of the plate level vial.
②
Rotate the instrument 180°or 200g around the vertical axis and check bubble
movement of the plate level. If the bubble has been displaced, then proceed with
the following adjustment
.
●
Adjustment
①
Adjust the level adjustment capstan screw , with the accessory adjusting pin and
return the bubble towards the center of the plate level vial. However, correct only
one-half of the displacement by this method.
②
Correct the remaining 1/2 amount of the bubble displacement with the leveling
screws.
③
Rotate the instrument 180°or 200g around the vertical axis once more and check bubble
movement. if the bubble is still displaced, then repeat the adjustment.
101
Half amount of displacement
Level adjustment screw
Summary of Contents for CST202
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