Checks And Adjustments; Circular Level - Topcon ES-62 Instruction Manual

18

CHECKS AND ADJUSTMENTS

A ES is a precision instrument that requires fine adjustments. It must be inspected and adjusted before
use so that it always performs accurate measurements.
• Always perform checking and adjustment in the proper sequence beginning from Section 18.1
"Circular Level" to 18.7 "Checking and Adjusting of Laser Plummet".
• 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.
• Make sure the instrument is securely set up and stable before performing checks and adjustments.

18.1 Circular Level

 PROCEDURE: Checking and adjusting
1 Level while checking the display.

see Section 2.5.2 "Levelling".

• If the tilt sensor is misaligned, the circular level is not
adjusted correctly.
2 Check the position of the bubble of the circular level.
If the bubble is not off-center, no adjustment is necessary.
If the bubble is off-center, perform the following adjustment.
3 First confirm the off-center direction.
Use the hexagonal wrench (2.5mm) to loosen the circular
level adjustment screw on the side opposite to the direction
the bubble is displaced to move the bubble to the center.
4 Adjust the adjusting screws until the tightening tension of
the three screws is the same to align the bubble in the
middle of the circle.

• Be careful that the tightening tension is identical for all the adjusting screws.
• Also, do not over-tighten the adjusting screws as this may damage the circular level.
18 CHECKS AND ADJUSTMENTS
EXIT
18-1
X
X -3'20"
Y 3'40"
Y