Multimeter Procurement Tips thiab cov txheej txheem ua haujlwm
1. Cov lej tso saib thiab qhov tseeb ntawm multimeter
Cov lej tso saib thiab qhov tseeb yog qhov tseem ceeb tshaj plaws thiab tseem ceeb tshaj plaws ntsuas ntawm multimeter. Feem ntau hais lus, qhov ntau dua tus lej tso tawm ntawm lub multimeter, qhov tseeb dua, thiab rov ua dua.
2. Txoj kev ntsuas thiab AC zaus teb ntawm multimeter
Txoj kev ntsuas ntawm multimeter feem ntau yog ntsuas AC cov cim. Nrog rau kev hloov pauv ntawm qhov zaus ntawm AC teeb liab, ntau cov lus teb zaus tshwm sim, uas cuam tshuam rau kev ntsuas ntawm multimeter. Feem ntau muaj ob txoj hauv kev rau kev ntsuas AC cov cim nrog ib qho multimeter: tus nqi nruab nrab thiab qhov muaj txiaj ntsig zoo ntsuas.
3. Muaj nuj nqi thiab ntsuas ntau yam
Cov tuam txhab sib txawv ntawm multimeters yuav tsim cov kev ntsuas kev ua haujlwm sib txawv. Ordinary multimeters tuaj yeem kuaj AC / DC voltage, tam sim no, tsis kam, rau -tawm, thiab lwm yam, tab sis qee qhov multimeters tsis muaj nuj nqi tam sim no los txo cov nqi.
4. Kev ntsuas kev ruaj ntseg thiab kev tiv thaiv
Multimeter zoo muaj kev tiv thaiv tus kheej zoo -. Piv txwv li, thaum ib co multimeters ntsaws rau hauv qhov tsis ncaj ncees lawm sojntsuam hlau, lawv yuav cia li suab beep tswb ... Thaum xaiv ib tug multimeter, tsis txhob blindly nrhiav cov nqi pheej yig, nws yuav tsum tau siv thiab yooj yim rau siv.
Cov lus qhia rau kev siv ib tug multimeter
1. Ua ntej siv, ua kom paub koj tus kheej nrog ntau yam haujlwm ntawm lub tshuab multimeter, thiab xaiv cov iav, qhov ntau thiab qhov (socket) raws li cov khoom ntsuas.
2. Thaum qhov loj ntawm cov ntaub ntawv ntsuas tsis paub, qhov hloov pauv yuav tsum tau teem rau tus nqi siab tshaj plaws ua ntej, thiab tom qab ntawd hloov los ntawm qhov loj mus rau qhov me me, kom lub ntsuas ntsuas taw qhia ntau tshaj 1/2 ntawm tag nrho cov nplai.
3. Thaum ntsuas kev tiv thaiv, tom qab xaiv qhov tsim nyog magnification ntau yam, kov ob lub probes kom tus pointer taw tes rau xoom. Yog tias tus pointer deviates ntawm xoom, kho qhov "zero adjustment" knob kom tus pointer rov qab mus rau xoom kom paub meej qhov ntsuas tau. Yog tias qhov xoom tsis tuaj yeem hloov kho lossis lub ntsuas ntsuas digital tso tawm lub tswb ntsuas hluav taws xob tsawg, nws yuav tsum tau kuaj xyuas raws sijhawm.
4. Thaum ntsuas qhov kev tiv thaiv ntawm ib qho hluav taws xob, lub zog hluav taws xob ntawm qhov ntsuas hluav taws xob yuav tsum raug txiav tawm thiab kev ntsuas nyob tsis raug tso cai.
5. Thaum siv multimeter rau kev ntsuas, yuav tsum tau them nyiaj rau tus kheej thiab ntsuas kev nyab xeeb. Thaum lub sij hawm sim, nws tsis raug tso cai kov cov hlau ntawm qhov kev sojntsuam nrog ob txhais tes, thiab nws tsis raug tso cai hloov lub iav hloov nrog hluav taws xob los xyuas kom meej qhov ntsuas thiab tsis txhob muaj xwm txheej xws li hluav taws xob poob siab thiab ntsuas hluav taws xob.
