Tshuab kuaj kab mob tsis ua hauj lwm ua

A, thiab pov thawj txoj kev muab txheem carved kab taw mus kawm rau cov hardness ' meter ' (los yog tshuab kuaj kab mob) uas ua hauj lwm nyob ntev, kos Shi thawj adjustable zoo focal ntev, ua eyepiece tsis pom kev zoo nyob rau hauv los yog projection npo Shang yuav ntshiab pom kab txheem carved taw rau kab carved, thiab haum rau thiab eyepiece li ntawm carved kab coincide ces yuav readings tshuab kuaj kab mob ntawm cov kab carved thiab carved kab txheem taw rau carved kab rau piv , yuav kawg rau ntau yam kev ntsuas seb tag nrho ntawm 5 yuav luv ib paragraph kev ntsuas, cov pawg lus luv piv 3 zaug, muab 3 zaug piv qhabnias ntawm nruab nrab, nws tus kwv tij uas tsis w yog Xia ntaus rau tus muab xam:

W =(Li-L) /L×100%

Type:errorW--(mm),li--areadingmicroscopecomparisonofthemeasuredlength(mm),(i=1~5),L--standardreticlescalecomparisonofactuallength(mm).

Readingmicroscopescalecomparesparagraphby paragraphasdescribed saum toj no, theerrorshall tsis pub tshaj ± 0.5%.

Thib ob, failurecausesandadjustment

1. microscopecloudyclear

Themainreason:lensdirtyormoldy.

Troubleshooting: whenthereisdustordirtonthelens, usingbrush, featherdrop, thenwithlenspaperorwithcotton wooldippedinalcoholorether, wipecarefullyalongacircularpath, butdo notwipethefluidloss.

#39 2.canand; tclearlyseetheindentationinthemirroredge

Themainreason:somelooseningof thelens.

Ntaus: thefasteningoflensislooseagain.

3. areadingmicroscopescalevalueandthegaugescaledo notcoincide

Themainreason:lenslenseslooselensorobjective lenstubegasketattheconnectionislost, thefocal lengthchanges.

Ntaus: theobjectivelensfastening, ifwasherismissing, andafterfiddlingwiththethickness, withsuitablewashers, tominimumpositioncalibrationerror.

4. areadingmicroscopescalevaluegreaterthanthegaugescale

Themainreason:lensbarrelincrease, maybeloosetubejoints.

Troubleshooting: retightentubeconnector.

Areadingmicroscopeshould bekeptclean, sij hawm ntev, yuav beplacedinthedryertopreventmold. Usetheprocesstogently, thiaj li tsis todamagethemicroscope, affectmeasurementaccuracyandservicelife.