53精密水准仪与水准尺-控制测量学

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1、53精密水准仪与水准尺-控制测量学CollectedbyoneselfMistakesareunavoidableForrefereneeonlyIncaseoferrorPleasecorrectme!ThankyouSection5.3precisionlevelandlevelrulerConstructionfeaturesof5.3.1preciselevelFortheprecisionofpreciselevelingInadditiontosomeexternalfactorsTheaccuracyandreliabilityoftheinstrumentinthestruct

2、ureisofgreatimpottancetothisendThefollowingrequirementsareprovidedforsomeconditionsrequiredbytheprecisionlevel1.highqualitytelescopeopticalsystemsToobtainaclearimageofascaleonatelescopeThetelescopemusthavesufficientmagnificationandlargeapertureoftheobjectiveGeneralprecisionlevelmagnificationshouldbe

3、greaterthan40timesTheapertureoftheobjectivelensshallbegreaterthan50mm1.strongandstableinstrumentstructureThestructureoftheinstrumentmustmaketheconnectionbetweenthecollimationaxisandthehorizontalaxisrelativelystableFreefromchangesinexternalconditionsandchangetheirrelationshipThemaincomponentsofthegen

4、eralprecisionlevelaremadeofspecialalloysteelAprotectivecoverisarrangedontheinstrumenttoprotecttheheatinsulation2.high-precisionmicrometerdeviceThepreciselevelmusthaveanopticalmicrometerTheprecisedeterminationoflessthanstandardgaugemantissatotheminimumvalueofthelinelayoutTherebyimprovingthereadingacc

5、uracyonthelevelingrodTheopticalmicrometerofageneralprecisionlevelreadsthe0.lmmReadto0.Olmm1.highlysensitivepipelevelThegridlevelofageneralprecisionlevelis10〃/2mnTBecausethesensitivityofthelevelishigherWhenobserving,itismoredifficulttomakethebubblesofthelevelrapidlytothisendOnaprecisionlevel,theremus

6、tbeatiltingscrew(alsocalledaslightlytiltedscrew)SothatthecollimationaxisandthehorizontalaxiscanbeproducedatthesametimeaslightchangeSothatthestandardbubbleiseasytoinstallinordertoachieveaccuratealignmentofthecollimationaxisTable5-1levelseriesandbasictechnicalparametersofourcountryTechnicalparameterit

7、emLevelmodelseriesS05SIS3S10AveragedeviationofaverageelevationbetweenkilometersTelescopemagnificationEffectiveapertureoftelescopeLatticevalueoftubularlevelMeasuringrangeofmicrometerMinimumcellvalueofm