Peb theem voltage ntsuas nrog ib tug multimeter txoj kev
Yuav siv thawj multimeter li cas? Raws li pom hauv daim duab hauv qab no, nws yog digital multimeter. Thaum xaiv lub jack, koj yuav tsum xaiv ob lub jacks nrog V thiab COM kawg. Ntxig ob lub qhov no raws li qhia hauv daim duab. Tsis txhob ua li no. Tsis yog, txwv tsis pub nws yog qhov txaus ntshai. Tom qab ntawd muaj ntau yam thiab iav xaiv. Qee qhov multimeters tsuas muaj lub zog thiab tsis tas yuav xaiv qhov sib txawv, tab sis ib qho uas pom hauv daim duab yuav tsum tau teeb tsa rau AC voltage iav, uas yog, lub cim yog V ua raws li txoj kab wavy, thiab xaiv ntau yam zoo dua. tshaj koj li. Qhov ntsuas hluav taws xob yuav tsum tau ntsuas yog qhov loj. Tam sim no koj npaj txhij pib ntsuas.
Ob lub xov hlau twg tau ntsuas tus cwj mem kov thaum ntsuas thib ob? Feem ntau peb-theem hluav taws xob muaj peb xim: daj, ntsuab thiab liab los sawv cev rau ABC peb-theem raws li lub teb chaws tus qauv. Yog tias koj xav ntsuas AB ob-theem hluav taws xob, tsuas yog muab cov kev xeem coj mus rau cov xaim daj thiab ntsuab. Nco ntsoov tias tsis tas yuav cais cov ncej zoo thiab tsis zoo. Nyob rau hauv tib txoj kev, yog tias koj xav ntsuas BC theem voltage, tsuas yog kov cov xov hlau ntsuab thiab liab raws. Los ntawm kev sib piv, kov cov xaim daj thiab liab yog ntsuas AC theem voltage.
Hloov lub multimeter mus rau qhov ntsuas qhov ntsuas hluav taws xob, thiab siv cov xim liab thiab xim dub coj mus kuaj ntawm lub multimeter los ntsuas ob-theem voltages ntawm peb-theem fais fab mov kom pom tias lawv nyob ib puag ncig 380V. Nws tseem yuav tsum tau xyuas seb qhov peb-theem voltages puas yog thiab sib npaug. Thaum ua haujlwm no,. Nco ntsoov xyuam xim rau kev nyab xeeb. Qhov no yog ib hom kev tiv thaiv rau tus kheej
Yuav ua li cas teeb tsa multimeter teeb rau kev kuaj dej?
1. Ua ntej disconnect lub ntsiab kev rho tawm ntawm peb cov kab hluav taws xob nkag thiab tua tag nrho cov neeg siv khoom hluav taws xob, xws li tshem tawm lub tub yees, tig tawm lub twj tso kua mis hloov, thiab lwm yam.
2. Muab lub tshuab ntsuas digital tso rau ntawm 200M ohm ntau yam, tso ib qho kev xeem coj mus rau ib qho ntawm ob lub qhov hluav taws xob nyob ntawm qhov chaw thauj khoom, thiab kov lwm qhov kev sim ua rau phab ntsa, zoo dua mus rau hauv av xaim los yog ib ntus Ground wire. Tom qab tus naj npawb tso tawm ntawm lub multimeter stabilizes, nyeem dab tsi yog qhov kev tiv thaiv hluav taws xob ntawm cov kab tseem ceeb. Yog tias tus nqi hluav taws xob tiv thaiv tsawg dua 0.5 megohm, ces muaj teeb meem nrog cov kab tseem ceeb. Yog hais tias lub rwb thaiv tsev tsis kam siab tshaj 0.5 megohm, nws tuaj yeem txiav tawm. Muaj teeb meem nrog cov kab tseem ceeb. Siv tib txoj kev los ntsuas lwm cov hlau thiab xyuas cov nqi kom pom tias muaj teeb meem nrog cov kab loj.
3. Txheeb xyuas qhov ntsuas qhov ntsuas hluav taws xob ntawm cov ceg hluav taws xob thiab txhua yam khoom siv hluav taws xob, thiab siv tib txoj kev los xyuas lawv ib qho los ntawm ib qho kom txog thaum pom qhov txhaum.
