Ob peb lub hauv paus ntsiab lus rau xaiv ib tug multimeter
1, Muaj nuj nqi
Digital multi-meter ntxiv rau kev ntsuas AC thiab DC voltage, AC thiab DC tam sim no, kev tiv thaiv thiab lwm yam tsib lub luag haujlwm, muaj cov lej digital, ntsuas tus kheej, nyeem ntawv kom tswj, nyeem ntawv yuam kev, diode nrhiav, lo lus xaiv ntev, IEEE {{ 2}} interface lossis RS-232 interface thiab lwm yam haujlwm, kev siv cov kev siv tshwj xeeb uas yuav tsum tau xaiv.
2, Ntau yam thiab ntau yam
Digital multimeter muaj ntau ntau yam, tab sis nws qhov yooj yim ntau yam raug * siab. Ntau cov digital multi-meter muaj kev ua haujlwm tsis siv neeg, tsis tas yuav hloov kho qhov ntau, ua qhov kev ntsuas yooj yim, **, nrawm. Muaj ntau cov digital multi-meter over-range muaj peev xwm, nyob rau hauv kev ntsuas ntawm tus nqi tshaj qhov ntau tab sis tseem tsis tau mus txog * cov zaub loj tsis tuaj yeem hloov pauv thaum qhov ntau, yog li txhim kho qhov tseeb thiab kev ntxub ntxaug lub zog.
3, qhov tseeb
Digital multi-meter tso cai rau qhov kev ua yuam kev yuav tsum tsis tsuas yog saib ntawm nws qhov kev hloov pauv lub sijhawm yuam kev, tab sis kuj saib nws cov lus tsis raug. Thaum xaiv, peb kuj yuav tsum tau saib qhov kev ruaj ntseg yuam kev thiab linearity yuam kev rau ** ntau npaum li cas, seb puas los yog tsis lub zog daws kom tau raws li qhov yuav tsum tau muaj. General digital multi-meter xws li cov kev xav tau ntawm 0.0005 qib rau 0.00 2 qib, yam tsawg kawg 61 cov zaub; 0.005 qib rau 0.01 qib, yam tsawg kawg 51 cov zaub; 0.02 qib rau 0.05 qib, yam tsawg kawg 41 cov zaub; 0.1 qib hauv qab no, yam tsawg kawg 31 cov zaub.
4, input tsis kam thiab xoom tam sim no
Digital multi-meter input tsis kam yog tsawg dhau thiab xoom tam sim no siab dhau yuav ua rau ntsuas qhov yuam kev, qhov tseem ceeb yog saib cov ntsuas ntsuas tau tso cai los ntawm tus nqi txwv yog ntau npaum li cas, uas yog, pom qhov loj ntawm lub teeb liab qhov chaw ntawm lub internal kuj. Thaum lub teeb liab qhov impedance siab, lub ntsuas nrog siab input impedance thiab qis xoom tam sim no yuav tsum raug xaiv kom nws cov nyhuv tuaj yeem tsis quav ntsej.
5, series hom tsis lees paub piv thiab hom kev tsis lees paub piv
Nyob rau hauv lub xub ntiag ntawm ntau yam cuam tshuam xws li hluav taws xob teb, magnetic teb thiab ib tug ntau yam ntawm high-frequency suab nrov los yog ntev-ntev ntsuas, nws yog ib qho yooj yim mus sib tov rau hauv lub teeb liab cuam tshuam, ua rau cov nyeem tsis raug, yog li nws yuav tsum tau siv nyob rau hauv lub raws li ib puag ncig los xaiv cov koob, hom kev tsis lees paub qhov piv ntawm cov twj paj nruag siab, tshwj xeeb tshaj yog rau cov kev ntsuas siab, yuav tsum tau xaiv nrog kev tiv thaiv qhov kawg ntawm G digital multi-meter, uas tuaj yeem ua tau zoo heev ntawm kev tiv thaiv ntau- hom cuam tshuam.
6, Daim ntawv qhia thiab lub hwj huam mov
Digital multi-meter tso saib daim ntawv tsis yog digital, tab sis kuj tuaj yeem tso cov kab kos, ntawv nyeem thiab cov cim, txhawm rau pab txhawb kev soj ntsuam, kev ua haujlwm thiab kev tswj hwm. Raws li sab nraud qhov ntev ntawm nws cov khoom siv tuaj yeem muab faib ua plaub pawg me, nruab nrab, loj thiab loj.
Digital multi-meter fais fab mov feem ntau yog 220V, thiab qee qhov tshiab digital multi-meter fais fab mov yog dav heev, tuaj yeem nyob nruab nrab ntawm 1100V ~ 240V. Qee qhov me me digital multi-meters tuaj yeem siv nrog cov roj teeb, thiab qee qhov digital multi-meters tuaj yeem siv peb hom: alternating tam sim no, cov roj teeb hauv nickel-cadmium lossis cov roj teeb sab nraud.
