Dab tsi yog cov iav ntawm cov dej xau multimeter? Yuav ua li cas ntsuas qhov to nrog lub digital multimeter
Thaum lub hwj chim qhib, siv cov ntaub ntawv AC voltage los ntsuas qhov voltage ntawm cov khoom siv rau hauv av. Nyob rau hauv cov ntaub ntawv ntawm lub hwj chim tsis ua hauj lwm, ntsuas qhov tsis kam mus rau hauv av ntawm lub energized ib feem nrog ib tug hluav taws xob barrier.
Kev xau loj tuaj yeem kuaj pom los ntawm qhov tsis kam ntawm multimeter, tab sis yog tias qhov xau tsis loj, multimeter ntsuas tsis tuaj yeem ntsuas nws; muaj tshwj xeeb rwb thaiv tsev tiv thaiv testers rau ntsuas rwb thaiv tsev, xws li co meters, digital megohmmeters, thiab lwm yam., uas muaj peev xwm simulate tiag tiag ua hauj lwm Voltage, lub xeem voltage ntawm lub multimeter yog tsawg heev.
Ua ntej nug tus neeg siv kho qhov teeb meem txhaum cai thiab dab tsi yog qhov pom tseeb; thib ob, saib seb puas muaj qhov tsis txaus ntseeg ntawm qhov chaw, thiab tom qab ntawd mus rau qib tom ntej ntawm kev tshuaj xyuas.
1. Ua ntej disconnect lub ntsiab kev rho tawm ntawm tus neeg siv lub zog nkag, thiab tua tag nrho cov neeg siv cov khoom hluav taws xob, xws li tshem tawm lub tub yees, disconnecting dej twj tso kua mis hloov, thiab lwm yam.
2. Muab lub iav ntawm lub tshuab digital multimeter rau ntawm 200M iav ntawm ohm ntau yam, tso ib qho kev xeem coj mus kuaj ntawm ib qho ntawm ob qhov hluav taws xob ntawm qhov chaw thauj khoom, thiab lwm qhov kev sim cov hlau lead kov phab ntsa, nyiam dua hauv av xaim lossis ib ntus hauv av xaim. Tom qab tus lej tso tawm ntawm lub multimeter yog qhov ruaj khov, qhov ntsuas hluav taws xob tiv thaiv tus nqi ntawm cov kab tseem ceeb tau nyeem. 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. Nws yog ib qho teeb meem nrog cov kab tseem ceeb. Siv tib txoj kev los ntsuas lwm cov hlau, thiab tseem xyuas cov nqi kom pom tias muaj teeb meem nrog cov kab loj.
3. Tshawb xyuas cov nqi hluav taws xob tiv thaiv ntawm shunt thiab txhua yam khoom siv hluav taws xob, thiab xyuas ib qho los ntawm ib qho tib yam kom txog thaum pom qhov txhaum.
Kev ceev faj ua haujlwm
1. Thaum siv 200M block ntawm ohm block ntawm multimeter, yuav tsum ceev faj tsis txhob kov cov hlau ntawm cov hlau lead nrog koj txhais tes thaum ntsuas, txwv tsis pub kev nyeem ntawv yuav tsis raug.
2. Thaum ntsuas txhua yam khoom siv hluav taws xob, ua tib zoo tso tawm ua ntej kom tsis txhob muaj qhov hluav taws xob tam sim no hauv cov khoom siv hluav taws xob los ntawm kev ua phem rau tib neeg.
Txoj kev no yog ib txoj hauv kev zoo los nrhiav qhov txhaum hauv lub xeev tsis muaj hluav taws xob. Txoj kev no kuj tseem siv tau rau cov neeg siv hluav taws xob thiab lub tsev tsim hluav taws xob tshawb nrhiav, tab sis thaum tshawb nrhiav, tsis yog tsuas yog cov khoom siv hluav taws xob yuav tsum raug txiav, tab sis kuj tseem yuav tsum tau txiav cov kab nruab nrab kom tsis txhob muaj hluav taws xob poob.
