Uas yog ntau los tiv thaiv kev cuam tshuam, digital multimeter lossis pointer multimeter
Hais txog kuv qhov kev paub siv, kuv thawj zaug siv lub pointer multimeter. Thaum siv nws, piv txwv li, qhov kev tawm tsam qee zaum yuav tsum tau teem rau xoom. Thaum ntsuas qhov ntsuas hluav taws xob, kuv pib ntsuas los ntawm cov iav siab kom tiv thaiv lub ntsuas kub ntawm qhov kub. Tsis tas li ntawd, thaum ntsuas, kuv kuj yuav tsum ua kom ruaj khov, thiab thaum nyeem qhov tseem ceeb, kuv txoj kab ntawm qhov pom yuav tsum yog perpendicular rau dial nto. Vim muaj kev cuam tshuam tseem ceeb ntawm tib neeg thiab ib puag ncig.
Ntawm qhov tsis sib xws, lub tshuab hluav taws xob digital tsis muaj qhov tsis zoo li hais los saum no thiab muaj lub siab nkag siab impedance, yog li tsis tas yuav txhawj xeeb txog kev hlawv lub ntsuas.
Tab sis tus pointer hom multimeter muaj qhov zoo ntawm kev nkag siab zoo thaum ntsuas qhov ntsuas.
Cov multimeter digital muaj qhov xav tau qis rau kev ua haujlwm ib puag ncig, ntau yam kev siv, muaj peev xwm tiv thaiv kev cuam tshuam, thiab kev nkag siab ntawm qhov tsis pom.
Lub analog multimeter muaj lub ntim loj, tsis yooj yim rau nqa, muaj cov kev xav tau siab rau kev siv ib puag ncig, tsis muaj peev xwm tiv thaiv kev cuam tshuam, thiab tsis yooj yim rau kev nyeem, tab sis muaj qhov tseeb.
Tau kawg, lub peev xwm los tiv thaiv kev cuam tshuam zoo dua nrog lub pointer hom multimeter. Thaum ntsuas qee qhov hluav taws xob tsis zoo, xws li qhov hluav taws xob ntawm qee cov ntsiab lus hauv qhov hloov pauv zaus, cov digital multimeter yuav nyeem random thiab nyeem tsis tau. Lub pointer hom multimeter tsis muaj qhov teeb meem no, tab sis nws qhov tseeb thiab kev siv yooj yim yog qhov phem dua li lub ntsuas ntsuas digital. Nyob rau hauv luv luv, ob leeg muaj lawv lub zog thiab tsis muaj zog.
Muaj ob hom pointer watches: sab hauv thiab sab nraud magnetic. Vim yog qhov cuam tshuam ntawm hluav taws xob zoo li qub, qhov yuam kev loj dhau lawm. Yog tias koj rub lub koob saib ntawm lub iav dial, nws yuav tsis rov qab los rau O. Lub moos digital muaj nws qhov zoo, tab sis txhua tus muaj nws qhov ntev.
Tsis tas yuav ntsuas lub voj voog luv luv, thiab muaj qhov pom tseeb lossis txawm tias loj heev acoustic thiab optoelectronic phenomena. Rau tripping tshwm sim los ntawm vim li no, tsuav yog qhov ua rau ntawm qhov luv luv Circuit Court raug tshem tawm, xyuas seb qhov kev sib cuag ntawm cov cua hloov tau raug hlawv los ntawm qhov luv luv tam sim no. Tshem tawm cov khoom siv hluav taws xob zoo tshaj plaws kom ntseeg tau tias qhov hloov pauv huab cua nyob hauv lub xeev tuag kiag. Kaw qhov hloov pauv huab cua thiab ntsuas peb-theem nkag thiab tawm cov kab hluav taws xob ntawm qhov hloov pauv siv lub tshuab hluav taws xob ntau ohm. Yog tias cov conductivity zoo, koj tuaj yeem siv zog thiab sim nws. Yog tias cov theem ploj lawm, tsis tas yuav hais ntxiv. Hloov cov cua hloov.
Yog hais tias ib tug luv luv Circuit Court tshwm sim nyob rau hauv lub cua hloov, muaj peev xwm ntawm lub davhlau ya nyob twg puas lawm. Koj tuaj yeem siv lub megger los ntsuas qhov rwb thaiv tsev ntawm txhua lub davhlau ya nyob twg (lossis siv lub tshuab ntsuas hluav taws xob los ntsuas ntawm lub iav ntawm 20K lossis siab dua, thiab tshem tawm cov xaim xaim thiab tawm ntawm ob sab ntawm lub tshuab cua hloov). Yog hais tias tus taw tes ntawm lub dial taw qhia sai sai deflects mus rau sab xis thaum pib ntawm kev co, nws qhia tau hais tias lub interphase rwb thaiv tsev ntawm lub cua hloov tau tawg lawm thiab siv tsis tau lawm. Yog tias cov rwb thaiv tsev tiv thaiv siab, ntau megaohms lossis ntau dua, nws tuaj yeem siv rau kev sim siv.
Yuav ua li cas siv ib tug multimeter los xyuas qhov ua rau ntawm cua hloov mus tripping
Cov txheej txheem rau lub hwj chim ntawm qhov kev sim yog raws li tau piav ua ntej. Tshem tawm cov khoom siv hluav taws xob yav dhau los, kaw qhov hloov pauv huab cua uas tau kho, thiab tom qab ntawd kaw qhov hloov hluav taws xob dhau los. Yog tias cov khoom siv hluav taws xob zoo li qub thiab tsis muaj lub suab txawv txav lossis tsis hnov tsw, qhov hloov pauv huab cua tuaj yeem siv txuas ntxiv mus.
Tshaj dhau. Overload yog ib qho ntawm cov laj thawj rau kev mus ncig ntawm cov cua hloov. Kov qhov hloov pauv huab cua uas dhau los ntawm koj txhais tes feem ntau ua rau koj xav tias lub plhaub tseem kub, lossis tseem kub rau qhov kov. Qhov no yuav ua rau muaj kev tiv thaiv ntawm cov thermal Cheebtsam hauv cov cua hloov.
Ntsuas qhov ua hauj lwm tam sim no ntawm lub tshuab cua hloov siv AC tam sim no ntau yam ntawm multimeter. Yog tias qhov ua haujlwm tam sim no tshaj qhov ntsuas tam sim no ntawm cov cua hloov pauv thiab txuas ntxiv ua haujlwm, qib siab ntawm huab cua hloov yuav tsum tau hloov raws li qhov ua haujlwm tam sim no.
Kev ua yuam kev. Thaum lub qhov hluav taws xob thiab qhov hluav taws xob ntawm cov cua hloov pauv yog cov xov hlau txhuas, nws yog ib qho yooj yim rau kev hnov mob nrog cov tooj liab lub davhlau ya nyob twg ntawm cov cua hloov, ua rau cua sov ntawm lub davhlau ya nyob twg blocks. Cov cuab yeej tiv thaiv thermal hauv qhov hloov pauv huab cua yog deformed vim cua sov, ua rau muaj kev tiv thaiv. Qhov no yog ib qho malfunction. Raws li ntev raws li tooj liab aluminium davhlau ya nyob twg blocks yog nias rau ntawm txhuas hlau thiab nruj nreem ua ke nrog cov cua hloov davhlau ya nyob twg blocks, qhov teeb meem no yuav daws tau.
