Dab tsi yog iav qhov dej ntws multimeter ua si? Yuav ua li cas ntsuas qhov to nrog digital multimeter
Ntsuas qhov hluav taws xob hauv av ntawm cov khoom siv nrog AC voltage thaum nws muaj zog. Nyob rau hauv cov ntaub ntawv ntawm lub hwj chim tsis ua hauj lwm, ntsuas lub grounding kuj ntawm lub electrified ib feem nrog hluav taws xob thaiv.
Kev xau loj tuaj yeem pom tau los ntawm kev siv cov ntaub ntawv tiv thaiv ntawm multimeter, tab sis yog tias qhov xau tsis loj, multimeter ntsuas tsis tau; Muaj tshwj xeeb rwb thaiv tsev tiv thaiv testers rau ntsuas rwb thaiv tsev, xws li co lub rooj thiab cov megger digital, uas tuaj yeem simulate qhov kev ua haujlwm tiag tiag, thiab qhov ntsuas hluav taws xob ntawm multimeter yog tsawg heev.
Ua ntej, nug tus neeg siv kho qhov teeb meem txhaum cai yog dab tsi thiab cov yam ntxwv pom tseeb yog dab tsi; Qhov thib ob, saib seb puas muaj qhov tsis txaus ntseeg ntawm qhov chaw, thiab tom qab ntawd ua qhov kev tshuaj ntsuam tom ntej.
1. Ua ntej disconnect lub ntsiab kev rho tawm ntawm tus neeg siv lub hwj huam mov, thiab tua tag nrho cov hwj huam loads ntawm tus neeg siv, xws li unplugging lub tub yees thiab disconnecting lub twj tso kua mis hloov.
2. Muab lub iav ntawm lub tshuab hluav taws xob digital rau ntawm 200M iav ntawm ohm iav, muab ib lub stylus rau ntawm ib qho ntawm ob kab tawm ntawm sab load, thiab kov cov phab ntsa nrog cov lwm yam stylus, nyiam dua kov cov xaim hauv av lossis cov xaim hauv av ib ntus. Tom qab tus naj npawb tso tawm ntawm lub multimeter yog qhov ruaj khov, cov nqi hluav taws xob tsis zoo ntawm cov kab tseem ceeb tau nyeem tawm. Yog tias tus nqi hluav taws xob tsis zoo yog tsawg dua 0.5 megohm, muaj qee yam tsis zoo nrog cov kab tseem ceeb. Yog hais tias lub rwb thaiv tsev tsis kam siab tshaj 0.5 megohm, nws tuaj yeem txiav txim siab tias muaj ib yam dab tsi tsis ncaj ncees lawm nrog cov kab tseem ceeb. Ntsuas lwm cov hlau nyob rau hauv tib txoj kev, thiab kuj xyuas tus nqi kom pom tias muaj ib yam dab tsi tsis ncaj ncees lawm nrog cov kab tseem ceeb.
3. Txheeb xyuas qhov kev tiv thaiv kev tiv thaiv hluav taws xob ntawm shunt thiab tag nrho cov khoom siv hluav taws xob, thiab sim lawv ib qho los ntawm ib qho tib yam kom txog thaum pom qhov txhaum.
Kev ceev faj rau kev ua haujlwm
1. Thaum siv 200M block ntawm multimeter ohm block, ceev faj tsis txhob kov cov hlau ntawm lub stylus ntawm tes thaum ntsuas, uas yuav ua rau kev nyeem ntawv tsis raug.
2. Ua tib zoo saib xyuas qhov tso tawm ua ntej thaum ntsuas txhua yam khoom siv hluav taws xob kom tsis txhob muaj cov capacitive tam sim no hauv cov khoom siv hluav taws xob los ntawm kev ua phem rau tib neeg.
Txoj kev no yog txoj hauv kev nyab xeeb los nrhiav qhov txhaum thaum tsis muaj hluav taws xob. Txoj kev no kuj tseem tsim nyog rau cov neeg siv hluav taws xob thiab hluav taws xob hluav taws xob tshawb nrhiav, tab sis thaum tshawb nrhiav, nws yog ib qho tsim nyog yuav tsum tau txiav tsis yog tsuas yog cov khoom siv hluav taws xob, tab sis kuj yog xoom kab kom tsis txhob muaj hluav taws xob poob siab.
