Kev ceev faj rau kev yuav khoom digital multimeter
Ib qho digital multimeter yog cov cuab yeej siv yooj yim tshaj plaws rau cov neeg nyiam siv hluav taws xob. Ib qho zoo digital multimeter tuaj yeem ntsuas tsis tau tsuas yog ntsuas ntau yam hluav taws xob, tab sis kuj ua tus pab cuam muaj zog rau cov neeg nyiam siv hluav taws xob los daws teeb meem thiab kho cov khoom siv hluav taws xob. Tam sim no muaj ntau yam khoom siv digital multimeter muaj rau xaiv. Yuav ua li cas xaiv lub digital multimeter uas yog ob qho tib si kev lag luam thiab ua tau raws li koj xav tau?
Pib los ntawm ib qho kev xav tau tiag tiag
Kev faib tawm ntawm digital multimeter yog qhov nyuaj heev: raws li nws cov qauv, nws tuaj yeem muab faib ua desktop digital multimeter thiab handheld digital multimeter. Raws li seb nws puas muaj microprocessor, nws tuaj yeem muab faib ua ib txwm A / D hloov pauv digital multimeter thiab ntse digital multimeter. Raws li nws cov lej, nws tuaj yeem muab faib ua 3 thiab ib nrab digital multimeter, 4 thiab ib nrab digital multimeter, thiab lwm yam.
Qhov tseeb, qauv, hom, thiab kev txawj ntse ntawm digital multimeters txiav txim siab tus nqi sib txawv. Tam sim no, tus nqi ntau ntawm digital multimeters muag hauv khw muag khoom yog li ntawm kaum tawm txhiab yuan mus txog kaum txhiab yuan. Yog li ntawd, ua ntej xaiv ib yam khoom, nws yog ib qho tseem ceeb kom paub meej koj tus kheej xav tau kev pab thaum yuav ib tug digital multimeter. Yog tias nws tsuas yog qhov kev sim dav dav thiab tsis xav tau qhov ntsuas qhov tseeb, ces xaiv qhov pheej yig handheld digital multimeter yog txaus; Yog tias koj koom nrog kev ntsuas qhov tseeb, kho, lossis muaj kev xav tau siab rau kev ruaj ntseg ntawm cov ntaub ntawv ntsuas, koj yuav tsum xaiv high-end handheld digital multimeter lossis desktop digital multimeter.
Kev ceev faj thaum yuav khoom
A. Qhov tseeb
Qhov tseeb ntawm digital multimeter ncaj qha cuam tshuam rau qhov tseeb ntawm kev ntsuas ntsuas. Yuav kom tau txais ib qho digital multimeter, ib tus yuav tsum xub txheeb xyuas nws cov kev ntsuas qhov tseeb: ua ntej, xyuas seb qhov tseeb ntawm lub ntsuas puas tuaj yeem ua tau raws li lawv cov kev xav tau; thib ob, txheeb xyuas tag nrho cov kev ua tau zoo ntawm lub 'meter'. Tsis txhob xav tias ib tug 4-digit digital multimeter yuav tsum siab tshaj ib tug 3-and-ib-ib tug lej multimeter nyob rau hauv cov nqe lus ntawm kev ntsuas qhov tseeb, Ib tug ntxhib craftsmanship 4 thiab ib tug ib nrab tus lej multimeter yuav muaj ib tug ntsuas qhov tseeb uas tsis zoo li qhov zoo crafted 3 thiab ib nrab tus lej multimeter. Tus tswv khw tau ntsib xws li ib lub 'meter': ib tug DT9103 hom 4 thiab ib nrab tus lej multimeter tsim los ntawm lub Hoobkas me me tsis paub, thaum lub sij hawm ntsuas, tus lej dhia yog qhov hnyav heev, thiab nws tsis tuaj yeem ua tau raws li cov kev xav tau ntawm txhua qhov.
B. Ceev faj
1. Kev tshwm sim
Ib qho zoo digital multimeter tuaj yeem dhau los ua cov khoom siv zoo nkauj, txawm tias nws yog ua los ntawm cov khoom siv, kev txhaj tshuaj molding tshuab, Circuit Court boards, lub tes tsho tiv thaiv lossis lwm yam khoom siv, nws yuav tsum ua kom zoo tshaj plaws.
2. Cov khoom kuaj xyuas
Tom qab tau txais digital multimeter:
Ua ntej, nws yog ib qho tsim nyog los xyuas seb lub rooj saib xyuas puas zoo, seb cov keyboards thiab cov nyees khawm puas ua haujlwm zoo, thiab seb qhov kov puas zoo.
Txheeb xyuas seb qhov hloov pauv (kev ntsuas kev ua haujlwm xaiv) rotates yooj yim, muaj qhov tsim nyog damping, thiab xis nyob, thiab seb qhov ntsuas ntsuas qhov zoo li cas.
Tshawb xyuas seb lub vijtsam LCD puas pom tseeb, seb puas muaj cov hlab ntsha ploj lawm, thiab seb tus lej dhia yuav tsum tsawg npaum li cas.
Ua tau lub suab buzzer.
3. Cov ntsiab lus siv
Yog tias koj tuaj yeem qhib lub rooj saib xyuas, koj tuaj yeem xyuam xim rau kev tsim ntawm lub rooj tsav xwm hauv Circuit Court, cov khoom xaiv, kev teeb tsa thiab vuam theem, thiab lwm yam. Ib qho zoo digital multimeter, kev tsim ntawm lub rooj tsav xwm Circuit Court yog ib qho tseem ceeb heev. Cov watches hauv tsev feem ntau muaj ob txheej txheej pawg thawj coj saib, thaum qee lub tsev lag luam loj txawv teb chaws xaiv ntau txheej txheej txheej txheej txheej txheej los muab kev tiv thaiv zoo dua thiab kev ua haujlwm hluav taws xob. Qib ntawm kev xaiv cov khoom txiav txim siab ntsuas qhov tseeb ntawm digital multimeters. High-end digital multimeters feem ntau siv cov chips mounted Cheebtsam los txhim kho qhov tseeb thaum txo qhov loj ntawm lub rooj tsavxwm. Cov khoom siv hauv cov chaw tseem ceeb tuaj yeem raug tshuaj xyuas. Kuv yuav tsis tham ntau txog kev siv vuam, raws li cov neeg nyiam siv tshuab hluav taws xob paub (thaum nws los txog rau vuam kev txawj ntse, koj tuaj yeem qhib lub tshuab hluav taws xob digital uas muaj nqis tshaj kaum yuan los saib, thiab cov khoom los ntawm kev cob qhia kev cob qhia tau lav ua rau koj. mob siab).
Thaum yuav khoom, koj yuav tsum tau them sai sai rau qee cov ntsiab lus, xws li kev tiv thaiv kev nyab xeeb, khoom warranty, kuaj cables, cov neeg siv phau ntawv, thiab lwm yam, kom ntseeg tau tias lawv ua tiav.
4. Kev ntsuas kev ua haujlwm
Thaum muas ib lub multimeter, qhov ntsuas kev ua haujlwm ntawm digital multimeter tuaj yeem lees paub los ntawm kev ntsuas cov khoom paub (xws li tsis kam, capacitance, roj teeb voltage, AC voltage, thiab lwm yam). Yog tias muaj kev tso cai, nws tuaj yeem raug xa mus rau lub koom haum sib koom ua ke rau kev tshuaj xyuas thiab lees txais cov ntsuas kev ntsuas.
