Tshawb xyuas qhov dej ntws multimeter los ua si lub iav dab tsi? Digital multimeter yuav ua li cas kuaj cov dej xau
Ntsuas qhov hluav taws xob rau hauv av ntawm cov khoom siv nrog AC voltage iav nyob rau hauv lub zog muaj zog. Ntsuas qhov tsis kam mus rau hauv av ntawm qhov energized nrog ib tug resistor nyob rau hauv cov ntaub ntawv ntawm lub hwj chim tsis ua hauj lwm.
Kev xau loj nrog lub multimeter kuj tuaj yeem pom, tab sis qhov to tsis loj, lub multimeter tsis tuaj yeem ntsuas; Kev ntsuas cov rwb thaiv tsev muaj qhov tshwj xeeb rwb thaiv tsev tiv thaiv tester, xws li: co rooj, cov megohmmeter, thiab lwm yam., cov no tuaj yeem simulate qhov kev ua haujlwm tiag tiag, qhov ntsuas hluav taws xob multimeter yog tsawg heev.
Ua ntej, nug tus neeg siv los qhia seb qhov tshwm sim txhaum cai, dab tsi yog cov yam ntxwv pom tseeb; Thib ob, los ntawm kev soj ntsuam saum npoo ntawm cov ntsiab lus tsis txaus ntseeg, thiab tom qab ntawd cov kauj ruam tom ntej hauv kev tshuaj xyuas.
1. thawj zaug disconnect tus neeg siv lub hwj chim mov mus rau hauv kab ntawm lub ntsiab kev rho tawm mus, tua tag nrho cov neeg siv cov hluav taws xob load, xws li unplugging lub tub yees, disconnecting lub twj tso kua mis hloov.
2. muab lub digital multimeter rau ntawm ohm iav 200M thaiv, ib tug cwj mem ntawm lub load sab ntawm ob ntawm ib qho ntawm cov xov hlau, lwm tus cwj mem kov phab ntsa, nyiam dua kov cov grounding hlau los yog ib ntus grounding hlau. Tos rau lub multimeter ntawm cov zaub ntawm tus naj npawb ntawm qhov ruaj khov, nyeem tawm cov kab tseem ceeb ntawm cov kab hluav taws xob tiv thaiv tus nqi, yog tias tus nqi hluav taws xob tsis zoo yog tsawg dua 0.5 megohm, ces qhov teeb meem tseem ceeb ntawm cov kab hluav taws xob yog 0.5 megohm. tuaj yeem txiav tawm yog qhov teeb meem kab loj. Ntsuas lwm cov hlau nyob rau hauv tib txoj kev, kuj xyuas cov nqi kom pom tias cov kab tseem ceeb yog teeb meem.
3. Txheeb xyuas cov nqi hluav taws xob tiv thaiv hluav taws xob ntawm lub sub-circuit thiab txhua yam khoom siv hluav taws xob, kuj siv tib txoj kev los ntsuas ib qho los ntawm ib qho, kom txog rau thaum koj pom qhov txhaum.
Kev Tiv Thaiv Kev Ua Haujlwm
1. thaum siv 200M thaiv ntawm multimeter ohmmeter, xyuam xim rau cov hlau ntawm tus cwj mem tsis tuaj yeem kov koj txhais tes thaum ntsuas, uas yuav ua rau kev nyeem ntawv tsis raug.
2. Thaum ntsuas txhua yam khoom siv hluav taws xob, ua tib zoo saib xyuas qhov tso tawm ua ntej, txhawm rau tiv thaiv cov capacitive 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 nyab xeeb dua los nrhiav kev ua txhaum thaum tsis muaj hluav taws xob. Txoj kev no kuj tseem siv tau rau cov neeg siv hluav taws xob thiab cov nroj tsuag xau ntawm kev tshawb fawb, tab sis hauv kev tshawb nrhiav, tsis yog tsuas yog txiav tawm lub zog hluav taws xob rau hauv kab, tab sis kuj yuav tsum tau txiav tawm ntawm xoom kab, kom tsis txhob muaj kev sib tsoo hluav taws xob.
