Yuav ua li cas cov ntaub ntawv uas yuav tsum tau lub leakage multimeter ua si? Yuav ua li cas siv ib tug multimeter los xyuas qhov to
Yuav ua li cas ntsuas qhov leakage nrog multimeter
Lub roj teeb hauv lub multimeter yog 9v rau 15v. Cov ntaub ntawv tiv thaiv thiab qhov hluav taws xob tsuas tuaj yeem txiav txim siab luv luv, thiab txiav txim siab seb puas muaj qhov xau.
Muaj peb txoj hauv kev los xyuas cov dej xau nrog multimeter:
1. Kev ntsuas hluav taws xob: tua thiab txiav tawm tag nrho cov khoom siv hluav taws xob, siv lub tshuab hluav taws xob multimeter nrog RX10K iav, ib qho kev xeem txhuas txuas nrog cov hlau nyob, thiab lwm qhov kev xeem cov hlau lead yog grounded (los yog faucet). Nws yuav tsum qhia infinite kuj, txwv tsis pub yuav muaj to.
2. Kev ntsuas nyob: Siv lub ntsuas ntsuas nrog 250-volt AC voltage ntau los ntsuas lub plhaub hlau ntawm cov khoom siv hluav taws xob uas xav tias yuav xau. Ib qho kev xeem txhuas txuas nrog lub plhaub, thiab lwm qhov kev xeem cov hlau lead yog hauv av (lossis lub faucet). Thaum tus pointer qhia qhov voltage siab dua 30-50 volts, hloov nws Siv AC 50 volts. Yog tias cov khoom siv hluav taws xob tau lees paub tias siab dua 30 volts, nws yog qhov xau, thiab qis dua 30 volts yog qhov qub. Tom qab ntawd hloov lub xoom thiab hluav taws xob hluav taws xob ntsaws cov xov hlau thiab ntsuas dua kom paub meej.
3. Kev ntsuas hluav taws xob ntawm cov xaim nyob thiab cov xaim nyob nruab nrab (lossis cov xaim nyob thiab cov xaim nyob): tua thiab txiav tawm tag nrho cov khoom siv hluav taws xob, ntsuas qhov kev tiv thaiv ntawm cov hlau nyob thiab cov xaim nruab nrab, nws yuav tsum tsis muaj qhov kawg, txwv tsis pub nws yog to.
Ceev faj
1. Ua ntej siv lub tshuab multimeter, "kev hloov kho tshuab xoom" yuav tsum tau ua ua ntej, uas yog, thaum tsis muaj hluav taws xob los ntsuas, ua tus pointer ntawm multimeter taw tes rau txoj hauj lwm ntawm xoom voltage lossis xoom tam sim no;
2. Nyob rau hauv tus txheej txheem ntawm kev siv lub multimeter, tsis txhob kov cov hlau ib feem ntawm qhov kev xeem cov hlau lead nrog koj txhais tes, yog li ntawd nyob rau hauv ib tes, nws muaj peev xwm xyuas kom meej qhov tseeb ntawm qhov ntsuas, thiab ntawm qhov tod tes, nws kuj yuav xyuas kom meej. kev nyab xeeb ntawm tus kheej;
3. Thaum ntsuas qee qhov hluav taws xob, nws tsis tuaj yeem hloov lub zog thaum ntsuas, tshwj xeeb tshaj yog thaum ntsuas qhov hluav taws xob siab lossis siab tam sim no, yuav tsum tau them nyiaj ntau dua. Txwv tsis pub, lub multimeter yuav raug puas tsuaj. Yog tias koj xav tau hloov lub zog, koj yuav tsum txiav tawm qhov kev xeem ua ntej, thiab tom qab ntawd ntsuas tom qab hloov lub zog;
4. Thaum siv lub multimeter, nws yuav tsum tau muab tso rau kab rov tav kom tsis txhob ua yuam kev. Nyob rau tib lub sijhawm, nws tseem yuav tsum tsis txhob muaj kev cuam tshuam ntawm sab nraud magnetic teb ntawm multimeter;
5. Tom qab siv lub multimeter, qhov hloov pauv yuav tsum muab tso rau hauv qhov siab tshaj plaws ntawm AC voltage. Yog tias nws tsis siv sijhawm ntev, lub roj teeb hauv lub tshuab hluav taws xob yuav tsum tau muab tshem tawm los tiv thaiv lub roj teeb los ntawm corroding lwm yam khoom hauv lub ntsuas.
Yuav ua li cas siv ib tug multimeter los ntsuas qhov to nrog lub iav twg
1. Kev ntsuas hluav taws xob: tua thiab txiav tag nrho cov khoom siv hluav taws xob, siv lub tshuab hluav taws xob multimeter nrog RX10K iav, ib qho kev xeem txhuas txuas nrog cov hlau nyob, thiab lwm qhov kev xeem cov hlau lead yog grounded. Nws yuav tsum qhia infinite kuj, txwv tsis pub yuav muaj to.
2. Kev ntsuas nrog ib qho taw tes: Siv 250V AC voltage ntau ntawm lub multimeter los ntsuas cov hlau casing ntawm cov khoom siv hluav taws xob uas xav tias yuav xau. Ib qho kev xeem txhuas yog txuas nrog lub casing, thiab lwm qhov kev xeem cov hlau lead yog hauv av. Thaum tus taw tes qhia tias qhov hluav taws xob siab dua 30-50V, hloov mus rau AC 50V. Yog tias lub zog hluav taws xob tau lees paub tias siab dua 30V, nws yog qhov xau, thiab qis dua 30V, nws yog qhov qub, thiab tom qab ntawd xoom thiab hluav taws xob hluav taws xob ntsaws cov xov hlau raug thim rov qab thiab ntsuas dua kom paub meej.
3. Kev ntsuas hluav taws xob ntawm cov xaim nyob thiab cov xaim nyob nruab nrab (lossis cov xaim nyob thiab cov xaim nyob): tua thiab txiav tawm tag nrho cov khoom siv hluav taws xob, ntsuas qhov kev tiv thaiv ntawm cov hlau nyob thiab cov xaim nruab nrab, nws yuav tsum tsis muaj qhov kawg, txwv tsis pub nws yog to.
