Yuav ua li cas xaiv lub digital multimeter? Digital multimeter xaiv txuj ci Daquan
Hais txog txoj kev xaiv ntawm digital multimeter, xaiv qhov tsim nyog digital multimeter los ntawm cov yam ntxwv ntawm multimeter muaj nuj nqi, ntau yam thiab ntau yam, qhov tseeb, kev tawm tswv yim tsis kam thiab xoom tam sim no, nrog rau kev ua haujlwm ntawm qhov hluav taws xob thiab kev tiv thaiv thaiv.
Yuav ua li cas xaiv ib tug digital multimeter
Muaj ob hom digital multimeters: portable thiab desktop: portable, me me loj, lub teeb nyob rau hauv qhov hnyav, thiab tsawg zog noj, haum rau cov chaw muaj; desktop meters muaj qhov raug siab heev thiab kev daws teeb meem, thiab siv raws li cov qauv ntsuas thiab ntsuas qhov tseeb hauv metrology, kev tshawb fawb thiab kev tsim khoom. .
Kev xaiv ntawm digital multimeter feem ntau yog txiav txim siab los ntawm cov hauv qab no:
1. Kev ua haujlwm: Ntxiv rau tsib lub luag haujlwm ntawm kev ntsuas AC thiab DC voltage, AC thiab DC tam sim no, tsis kam, zaus, thiab lwm yam, cov multimeter digital tam sim no kuj muaj cov haujlwm kaw, cov ntaub ntawv khaws cia, hom kev txheeb ze, kev sib piv, kev ntsuas diode, dBm/dBv Test, IEEE-488 interface lossis RS-232 interface thiab lwm yam haujlwm yuav tsum raug xaiv raws li cov cai tshwj xeeb.
Yuav ua li cas xaiv ib tug digital multimeter 1
2. Ntau yam thiab ntau yam: Cov digital multimeter muaj ntau qhov sib txawv, thiab cov kab hauv paus muaj qhov tseeb tshaj plaws. Ntau cov multimeters muaj qhov tsis siv neeg / phau ntawv xaiv ntau yam, ua kev ntsuas yooj yim, nyab xeeb thiab ceev. Kuj tseem muaj ntau cov digital multimeters nrog ntau tshaj qhov muaj peev xwm. Thaum ntsuas tus nqi tshaj qhov ntau tab sis tsis tau mus txog qhov siab tshaj plaws, nws tsis tas yuav hloov qhov ntau, yog li txhim kho qhov raug thiab daws teeb meem.
3. Qhov tseeb: Qhov siab tshaj plaws tso cai yuam kev ntawm digital multimeter nyob ntawm qhov tsis yog ntawm nws qhov tseeb, tab sis kuj nyob ntawm nws qhov tseeb.
Yuav ua li cas xaiv ib tug digital multimeter 2
Plaub, input kuj thiab xoom tam sim no: cov input tsis kam ntawm lub multimeter digital yog tsawg dhau thiab xoom tam sim no siab dhau, uas yuav ua rau kev ntsuas yuam kev. Tus yuam sij nyob ntawm qhov txwv tus nqi tso cai los ntawm lub ntsuas ntsuas, uas yog, qhov kev tiv thaiv sab hauv ntawm lub teeb liab qhov chaw. Thaum lub teeb liab qhov chaw impedance siab, ib qho cuab yeej nrog siab input impedance thiab qis xoom tam sim no yuav tsum raug xaiv kom nws lub hwj chim tuaj yeem tsis quav ntsej.
5. Series-hom rejection ratio thiab common-mode rejection ratio: Thaum muaj ntau yam cuam tshuam xws li hluav taws xob teb, magnetic teb thiab ntau lub suab nrov nrov los yog thaum ua qhov kev ntsuas ntev, nws yooj yim los sib xyaw cov teeb liab cuam tshuam, ua rau kev nyeem ntawv tsis raug, yog li nws yuav tsum ua raws li kev siv ib puag ncig. Thaum xaiv ib qho cuab yeej nrog lub siab serial-rau-hom-hom kev tsis lees paub piv, tshwj xeeb tshaj yog thaum ua cov kev ntsuas siab, koj yuav tsum xaiv lub tshuab hluav taws xob digital nrog kev tiv thaiv davhlau ya nyob twg G, uas tuaj yeem tiv thaiv kev cuam tshuam ntau hom.
6. Daim ntawv qhia: Daim ntawv tso saib ntawm cov multimeter digital tsis txwv rau cov lej, tab sis kuj tseem tuaj yeem tso cov kab kos, ntawv nyeem thiab cov cim, thiab qee cov cuab yeej tshiab tuaj yeem tso saib ntau qhov tsis sib xws ntawm tib lub teeb liab tib lub sijhawm los pab txhawb rau ntawm qhov chaw. kev soj ntsuam, kev ua haujlwm thiab kev tswj xyuas.
Yuav ua li cas xaiv lub digital multimeter 3
7. Ua hauj lwm voltage: Lub hwj chim mov ntawm desktop digital multimeters feem ntau yog 220v, thiab ib co tshiab digital multimeters muaj ib tug dav lub hwj chim mov, uas yuav ua tau ntawm 96v thiab 264v. Handheld digital multimeter muaj nrog AC
Hluav taws xob, roj teeb rechargeable lossis lwm lub roj teeb hauv peb hom.
Yuav ua li cas xaiv ib tug digital multimeter 4
8. Lub sij hawm teb, ntsuas ceev, zaus teb: lub sij hawm teb luv dua, qhov zoo dua, tab sis qee qhov meters muaj lub sijhawm teb ntev, thiab kev nyeem ntawv tuaj yeem ruaj khov tom qab lub sijhawm; Kev ntsuas ceev yuav tsum tau ua raws li seb nws puas siv nrog rau qhov kev sim ntsuas, xws li Thaum siv los ua ke, qhov ceev yog qhov tseem ceeb heev thiab yuav tsum tau sib xyaw nrog tag nrho cov kab ke; cov lus teb zaus raug xaiv tsim nyog raws li qhov ntsuas ntsuas.
9. Qhov tseeb RMS ntsuas: AC voltage ntsuas tau muab faib ua tus nqi nruab nrab hloov pauv, tus nqi siab hloov pauv thiab qhov tseeb RMS hloov pauv. Thaum lub waveform distortion loj, qhov nruab nrab tus nqi hloov dua siab tshiab thiab ncov tus nqi hloov pauv tsis raug, thaum qhov tseeb RMS hloov dua siab tshiab tsis tuaj yeem cuam tshuam los ntawm waveform, kom qhov ntsuas ntsuas tau raug dua.
Yuav ua li cas xaiv lub digital multimeter 5
10. Txoj kev tiv thaiv thaiv kab mob: Muaj plaub-xaim thiab ob-xaim thaiv txoj kev rau kev ntsuas kev tiv thaiv. Thaum ua me me tsis kam thiab high-precision ntsuas, koj yuav tsum xaiv ib lub 'meter' nrog plaub-xaim kuj ntsuas.
