GPI GL-332 Instructions For Use Manual

Automatic Level

GL-332

INSTRUCTIONS FOR USE

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Contents

1. Technical Data............................................................................................02

2. Structure Focusing.....................................................................................03

3. Method of Operation..................................................................................06

3.1 Setting and Levelling................................................................................06

3.2 Aiming and Fousing..................................................................................06

3.3 Staff Reading............................................................................................07

4. Check and Adjusting..................................................................................08

4.1 Correct the parallelism for both circle bubble and Vertical axis...............08

4.2 Check and Adjusting for leveling of sight line of telescope......................09

5. Service and Maintance...............................................................................10

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1. Technical Data

Standard deviation of 1KM
double-run levelling

≤2.5mm

≤2.0mm

≤1.5mm

≤1.5mm

Telescope

Erect Erect Erect Erect

Magnification

20X 24X 28X 32X

Clear objective aperture

38mm 38mm 38mm 38mm

Field angle

1ﾟ20' 1ﾟ20' 1ﾟ20' 1ﾟ20'

Shortest focusing distance

0.6m 0.6m 0.6m 0.6m

Multiplication factor

100 100 100 100

Additive constant

0 0 0 0

Compensator working range

±15' ±15' ±15' ±15'

Compensator setting accurancy

±0.8" ±0.6" ±0.5" ±0.3"

Sensitivity of circular bubble

8' / 2mm

8' / 2mm

8' / 2mm

8' / 2mm

Graduation interval

1ﾟ 1ﾟ 1ﾟ 1ﾟ

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2. Structure Features

a. The telescope has system of erect internal focusing which can be used to obtain

reversed image by way of prism. It is of sealed type to prevent from dust, water
and steam.

b. All the optical parts are coated with transmissive and reflective films to reduce loss

in luminous energy.

c. Hair cross-spring suspension prism is used for the compensator, and the labyrinth

damper will stop the compensator within short time to raise efficiency.

d. The instrument matched with warning set so it can check the working situation of

compensator and the property of leveling.

e. Friction brake and the structure of whole circle micro-drive is used for instrument

horizontal micro-motion, which has the advantages of reliable in structure and easy
in operation.

f. Instrument (Fig.1) and (Fig.2)