e-survey ESL3 User manual

ESL3 AUTOMATIC LEVEL
QUICK START

Nomenclature
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Set up the Instrument
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1. Unbuckle the tripod's lower belt and release the
extension clamp screws.
2. Extend the tripod-legs until the tripod head is at your
eye level and fasten the extension clamp screws.
3. Spread the tripod-legs so that the leg-tips form a
regular triangle
4. Make sure the tripod head is approximately level, and
stamp the tripod-feet firmly into the ground.
CAUTION: Please keep the tripod head as level
as possible.
5. Set the automatic level onto the tripod head and
tighten the center screw.
6. Adjust the three leveling screws to get the bubble in
the center.

Check and Adjust the Circular Level
1. Adjust the leveling screws to center the bubble in the
circular level.
2. Turn the instrument 180°, and follow the following steps if
the bubble shifts.
3. Adjust the leveling screws, and move the bubble one half
of the shift to the center of the circular level.
4. Adjust the adjusting screws of the circular level with the
hexagonal wrench, and make the bubble in the center.
5. Repeat the above steps until the bubble does not shift when
the instrument turns to any direction.
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Check the Collimation Axis
1. Center the bubble in the circular level.
2. Do one of the following:
Adjust the leveling screw near the collimation axis
1/8 turn, and observe the moving of the crosshair.
Aim the target that is easy to see, and slightly tap
the tripod and instrument.
CAUTION: It is the normal situation if the crosshair
suffers instant deviation and immediately turns to
normal.
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Specification
Telescope
Magnification: 32 X
Image: Erect
Objective aperture: 38 mm
Accuracy: ±1.5 mm
Compensator
Working range: 15'
Setting accuracy: 0.5''
Sensitivity of circular bubble: 10'/2 mm
Physical Characteristics
Internal optical sight
IP66
Shanghai eSurvey GNSS Co., Ltd.
Website: https://esurvey-gnss.com/
Support: [e-mail]
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