Thaum multimeters yog ntau yam cuab yeej, lawv feem ntau tsis yog qhov kev xaiv tseem ceeb rau kev ntsuas av lossis av tiv thaiv vim
rau cov kev cai tshwj xeeb ntawm cov kev ntsuas no. Multimeters feem ntau yog siv los ntsuas qhov voltage, tam sim no, thiab
kuj nyob rau hauv low-voltage circuits. Txawm li cas los xij, yog tias koj muaj multimeter thiab xav kom tau txais qhov qhia tau yooj yim ntawm kev txuas mus ntxiv
hauv av, koj tuaj yeem siv nws nrog qee qhov kev txwv.
Ntawm no yog cov txheej txheem yooj yim los xyuas qhov txuas ntxiv mus rau hauv av siv multimeter:
Cov khoom siv xav tau:
Digital Multimeter (DMM)
Test coj
Txheej txheem:
Teem Multimeter rau Resistance Hom:
Tig lub multimeter dial rau qhov tsis kam (ohms) hom. Yog tias koj lub multimeter muaj lub suab txuas ntxiv, koj tuaj yeem siv qhov ntawd
zoo.
Tshem tawm Circuit Court:
Xyuas kom meej tias lub voj voog lossis cov cuab yeej koj kuaj tau raug tso tawm kom tsis txhob muaj hluav taws xob poob.
Connect Test Leads:
Txuas ib qho kev xeem coj mus rau hauv av lossis lub ntiaj teb taw tes uas koj xav sim. Yog vim li cas kev nyab xeeb, xyuas kom meej tias lub Circuit Court yog de-
energized thiab hais tias koj nyob nraum tsis ua hauj lwm ntawm ib tug nyob system.
Kov Lwm Tus Lead mus rau Qhov Chaw Paub:
Kov lwm qhov kev sim ua rau qhov chaw paub hauv av, xws li cov qauv hlau hauv av, cov pas nrig hauv av, lossis ib feem hauv av.
lub tsev tus qauv.
Saib Kev Nyeem Ntawv:
Yog tias koj siv hom kev tiv thaiv, multimeter yuav tso saib tus nqi tsis kam. Kev nyeem ntawv qis thiab ruaj khov (kaw
mus rau xoom ohms) qhia zoo txuas mus rau hauv av.
Yog hais tias koj lub multimeter muaj ib tug audible continuity hom, nws yuav tsim ib tug nruam beep yog hais tias muaj zoo continuation rau hauv av.
Kev txwv:
Txoj kev no muab cov lus qhia tseem ceeb ntawm kev txuas ntxiv tab sis tsis ntsuas qhov kev tiv thaiv tiag tiag rau hauv av.
Tej zaum nws yuav tsis tsim nyog rau kev ntsuas qhov ntsuas qis qis hauv av.
Rau qhov tseeb hauv av ntsuas ntsuas, tshwj xeeb tshaj yog nyob rau hauv kev lag luam lossis kev siv tseem ceeb, xav txog kev siv lub siab
cov khoom siv xws li lub ntiaj teb tiv thaiv tester lossis Megger.
Nco ntsoov tias kev tshuaj xyuas txuas ntxiv nrog lub tshuab multimeter yog ib txoj hauv kev yooj yim thiab ceev, tab sis nws yuav tsis txaus rau
kev ntsuam xyuas ntawm lub hauv paus system. Ib txwm ua raws li cov txheej txheem kev nyab xeeb thiab siv cov cuab yeej tsim nyog rau
kev ntsuas tshwj xeeb. Yog tias xav tau qhov tseem ceeb hauv av, sab laj nrog tus kws tshaj lij lossis siv
cov cuab yeej tshwj xeeb tsim los rau lub hom phiaj no.