GPI GL-332 Bedienungsanleitung

Automatic Level

GL-332

INSTRUCTIONSFORUSE

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Contents

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

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

3. Methodof Operation..................................................................................06

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

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

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

4. Checkand Adjusting..................................................................................08

4.1Correcttheparallelismfor both circlebubbleand Verticalaxis...............08

4.2Checkand Adjusting for levelingof sightline oftelescope......................09

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

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1. Technical Data

Standard deviationof 1KM

double-run levelling 2.5mm

2.0mm

1.5mm

Telescope Erect Erect Erect Erect

Magnification 20X 24X 28X 32X

Clear objective aperture 38mm 38mm 38mm 38mm

Fieldangle120'1 20'1 20'1 20'

Shortestfocusing distance 0.6m 0.6m 0.6m 0.6m

Multiplication factor 100 100 100 100

Additive constant0 0 0 0

Compensator working range ±15'±15'±15'±15'

Compensator setting accurancy

±0.8"±0.6"±0.5"±0.3"

Sensitivityof circular bubble8'/2mm

8'/2mm

Graduation interval11 1 1

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2.StructureFeatures

a. Thetelescopehassystemof erectinternalfocusing whichcanbeusedto obtain

reversedimagebywayofprism.It isofsealedtypetopreventfromdust,water

and steam.

b.Alltheoptical partsarecoatedwithtransmissiveand reflectivefilmsto reduceloss

in luminousenergy.

c.Haircross-spring suspensionprismisusedforthecompensator,andthelabyrinth

damperwillstopthecompensatorwithinshort time to raiseefficiency.

d.Theinstrument matchedwithwarningsetsoit canchecktheworking situationof

compensator andthepropertyofleveling.

e. Friction brakeand thestructureof wholecirclemicro-driveisusedfor instrument

horizontalmicro-motion,whichhastheadvantagesof reliablein structureand easy

in operation.

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

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Fig1

Focusing knob

Telescope

Objective

Endless horizontal

drive

Foot screw

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Fig2

Endless horizontal

drive

Foot screw

Bubble observer

Eyepiececover

Eyepiece

Adjusting screw

Graduation

Circularbubble

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3.Methodof Operation

3.1Settingand Levelling

a.Toadjusttripod,andlettheflatpartoftripod in alevelingposition,with itsheight

basicallyin the same line ofthetelescope andtheoperator'seyes.

b.Tosettheinstrument on tripod,andtoconnecttheinstrument tothetripod withthe

centralscrew.

c. Withthe help of levelingscrew. Centerthecircularbubbleexactlyattheposition.

3.2Aimingand Focusing

a. Torotateeyepiececover,observethroughtheeyepiece ofthetelescope,and letthe

sight distanceline ingraduatedscaleclear.

b.Toaimthestaff byrough finder,to rotatethefocusing handwheeluntil sight of

staff clear(forward to faraway,andbackwardtonearer),thentorotatethehand

wheelofendless horizontalmicro-motion and letthesight ofstaff on center.

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3.3Staff reading

a. Whentheinstrument aimingatthestaff,the

reading ofthecenterlineisthealtitude.(Fig.3)

is1.614m

b. Tohave the readingsrespectivelyforthe upper

lineand thelower,thedistancefromstation

point tothe staffwillbe（upperline

reading-lowerline reading）×100. (Fig.3)is

（1.675–1.550）×100 =12.5m

c.Whenthevertical hairinsight distance lines

aiming atobject A,theindicatinganglein dial

will be ∠AOB = α–β

Fig3

Fig4

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4.Checkingand adjusting

Beforeleavingthefactory,eachcenterlineisproperlyadjusted,thecenterlineis

properlyadjusted,thecenterlinesmaydeviatefromproperpositionafter

transportation orlongtimeoperation.Sotocheckandadjustthemain centerlines is

necessarybeforemeasuring and surveying isfield work.

4.1 Correcttheparallelismforboth circlebubbleand verticalaxistosetthe

instrument on tripod,andtorotateleveling screwsuntil bubbleiscentered.If to rotate

theinstrument on 180 ,thebubbleremainscentered,bubbleposition iscorrect,

otherwiseif mustbecorrectedin following way.

a.Torotatefootscrew,enablingbubbletomovecentered,andit'smovementwill

behalfdeviationfromthe totalvalue.

b.Toadjustthebubbleadjustingscrew,enablingbubbleto movecentered,andrepeat

until thebubble doesnot movealong with rotatingof theinstrument.

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4.2 Checkandadjusting forleveling ofsight

lineof telescope(Checkand adjusting angle)

selectachecklineabout45–60m on aeven

ground, divideiton 3partswith the same

length (Fig.5),staff onpointsB&C.Supposethemeanreading bytheinstrument at

point Aisa1,b1; and themeanreadingbytheinstrument atpoint Disa2,b2,if

=(a2,-b2) (a1-b1)≤±3mm theangleiswithintolerance,otherwisetheinstrument

mustbyreadjustedinthefollowing way:

a. Firstto calculate Δ= (a2,–b2)–(a1–b1) suppose a3=a2–Δ

b.Theinstrument remainedatpoint D,aimingatstaffB,toremovetheeyepiece

coveryouwillsee areticleadjusting screw(Fig.6),removetheadjusting screwon

gradudtedscale carefullywithadjusting needleuntilthegraduatedscalecenter

’

Fig5

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