Total Station Manual
- 180 -
3.7 Plummet
Checkout
1. Set up the instrument to the tripod, draw a cross on a white paper and put it on
the ground below the instrument.
2. Adjust the focal length of the optical plummet (for the optical plummet) or
switch on laser plummet, move the white paper to make the cross in the center
in the field of view (or laser flare).
3. Turn the feet screw, make the center mark of the plummet coincide with the
cross center.
4. Rotate alidade, every turn of 90 °, observe the contact ratio of the optical
plummet and cross center.
5. When rotate the alidade, the center of the optical plummet always coincide with
the cross center, there is no need to calibrate. Otherwise you should calibrate as
the following methods.
Calibration
1. Take down the screw cover between the optical plummet eyepiece and the
focusing handwheel.
2. Fix the white paper with a cross, and mark the points when the instrument
rotates 90 °, as the figure shows A, B, C, D points.
3. Connect the diagonal points A、C and B、D with a straight line, the intersection
name of the two line is O.
4. Use the calibration needle to adjust the four calibration screw, to make the
center mark of the plummet coincide with point O.
5. Repeat Step 4, check and calibrate until it meet therequirements.
6. With the laser plummet, unbolt the laser cover, using 1 # hex wrench to adjust
the three screws, fasten one side and loosen the other side, and adjust the laser
flare to point O.
7. Put the cover back in place.
To Next Page
Loading...
