Multimeter kuaj thiab cov txheej txheem ntawm kev kuaj xyuas hluav taws xob tsis raug
Hais txog cov txheej txheem ntawm kev ntsuas multimeter thiab kuaj xyuas hluav taws xob tsis raug, siv cov multimeter los sau cov kev sib tshuam sib cuam tshuam, multimeter los sau cov kev sib tshuam tsis tu ncua, cov txheej txheem ntawm multimeter los cim lub sijhawm kaw, thiab lwm yam, sau lub sijhawm thaum qhov tsawg kawg nkaus / siab tshaj / nruab nrab kaw hom yog qhib, feem.
Yuav ua li cas siv ib tug multimeter los kuaj xyuas hluav taws xob tsis raug
Yuav ua li cas siv lub multimeter los kuaj thiab kuaj xyuas qhov tsis raug ntawm hluav taws xob, nws yog ib qho nyuaj rau kev ntes cov hluav taws xob tsis zoo thaum muaj qhov txhaum, uas ntxiv qhov nyuaj rau kev tshawb nrhiav.
Muaj ntau cov cuab yeej kuaj xyuas uas tuaj yeem ua rau kev kuaj mob tsis sib xws yooj yim.
Cov khoom siv no suav nrog cov teeb liab tsom xam thiab cov oscilloscopes digital, nrog rau cov khoom siv yooj yim-rau-siv multimeters, digital multimeters, thiab ntsuas ntsuas lub zog rau kev ntsuas kev ua haujlwm (AC voltage, DC voltage, thiab ntsuas kev tiv thaiv), los ntawm cov qauv sib xyaw nrog lub rooj. , multimeter tuaj yeem kuaj xyuas qhov tsis raug ntawm qhov tsis sib xws.
Yav dhau los, tib neeg siv lub tshuab kaw lus kaw lus kom tsis tu ncua cov ntaub ntawv voltage lossis tam sim no. Thaum lub sij hawm ua hauj lwm, nws yog tsim nyog los txuas ib tug voltage rau lub input, los yog clamp ib tug tam sim no sensor ntawm ib tug hlau, thiab lub recorder yuav luam tawm qhov kev hloov nyob rau hauv voltage los yog tam sim no ntawm daim kab xev. Qee zaum, qhov ntev tshaj plaws ntawm cov ntaub ntawv yog nyob ntawm tus nqi ntawm daim ntawv ntawm daim npav.
1. Lub multimeter cov ntaub ntawv tsis sib xws
Siv lub multimeter Min / Max / nruab nrab kaw hom, xaiv qhov sib thooj Gongza raws li cov khoom ntsuas (AC Voltage, DC Voltage, Resistance, AC Tam Sim No, DC Tam Sim No thiab Zaus), nco ntsoov txuas ua ntej qhib qhov Min / Max / Nruab Nrab muaj nuj nqi Test lub Circuit Court, txwv tsis pub qhov tsawg kawg nkaus nyeem ntawv yuav ib txwm yog tus nqi ambient ua ntej qhov kev xeem coj tsis txuas.
Qhov no cuam tshuam rau kev tsom xam ntawm cov ntaub ntawv kaw tom qab lub sijhawm kaw tau dhau mus j Ua kom lub min / max / nruab nrab logging hom, qhov kev nyeem ntawv siab tshaj plaws yuav raug qhia rau ntawm multimeter zaub, thiab beep yuav suab thaum kuaj pom tus nqi siab tshaj lossis tsawg kawg nkaus. Suab.
Qhov zoo: Thaum ua kom ntseeg tau tias DMM yuav tsis raug cuam tshuam nrog thiab yuav tsis ua rau muaj kev phom sij rau tib neeg kev nyab xeeb, DMM tuaj yeem tso rau hauv qhov chaw ntsuas thiab tsom mus rau lwm yam dej num. Txhua lub sijhawm thaum lub sijhawm nkag mus, koj tuaj yeem saib cov ntawv nyeem tau khaws tseg, lossis ncua sijhawm nkag hom yam tsis tau tshem tawm cov ntawv nyeem.
2. Lub multimeter tsis tu ncua sau cov kev tsis sib xws
Qee qhov multimeters tsis tsuas yog muaj min / max / nruab nrab nkag, tab sis kuj tseem muab cov yam ntxwv no nrog rau lwm qhov tshwj xeeb hu ua AutoHOLD thiab lub cim xeeb loj dua los tsim EventLogging zoo.
Lub zog tuav tsis siv neeg tuaj yeem nkag siab thaum ntsuas lub teeb liab tsis ruaj khov thiab thaum nws rov qab ruaj khov dua. Siv nws pib-tuav los ua kom pib thiab nres ntawm min / max cov ntaub ntawv muaj nuj nqi tso cai rau DMM mus dhau qhov kev kuaj xyuas qhov tsis raug uas ua rau min lossis max tus nqi.
Yog hais tias lub multimeter muaj ib qho infrared RS232 interface, cov ntaub ntawv txuas mus ntxiv yuav muaj zog dua, thiab nws tuaj yeem dhau los ua ib qho kev tshwm sim yooj yim los xa cov ntaub ntawv sau los ntawm nws cov multimeter mus rau lub computer.
Siv lub khoos phis tawj, cov ncauj lus kom ntxaws ntawm txhua qhov xwm txheej ruaj khov thiab tsis ruaj khov tuaj yeem ua tiav. Los ntawm: Tsev ntawm Electrotechnical Technology
Tsis tsuas yog koj tuaj yeem saib qhov tsawg kawg nkaus thiab siab tshaj qhov tseem ceeb hauv txhua lub voj voog ruaj khov thiab tsis ruaj khov, tab sis koj tuaj yeem saib lub sijhawm pib thiab xaus ntawm txhua lub voj voog. Tus nqi nruab nrab rau txhua lub voj voog tseem raug kaw. Nyob rau tib lub sijhawm, qhov hloov pauv qauv ntawm qhov hluav taws xob lossis qhov tam sim no tuaj yeem tshawb pom dynamically.
3. Lub multimeter cim lub sijhawm kaw
Lub sijhawm kuaj pom qhov tsawg kawg nkaus thiab qhov siab tshaj plaws yog cov ntaub ntawv tseem ceeb rau kev txiav txim siab qhov ua rau tsis sib xws. Lub DMM hauv Min / Max / Nruab Nrab logging hom tuaj yeem khaws lub sijhawm ntawm thaum nws pib txiav thiab thaum qhov tsawg kawg nkaus tshiab, qhov siab tshaj plaws lossis nruab nrab tus nqi tau txais kev cawmdim. Yog li ntawd, txhua qhov kev txuag tsawg kawg nkaus, qhov siab tshaj plaws thiab nruab nrab tus nqi muaj "lub sijhawm stamp" sib haum rau nws.
Tam sim no, digital multimeters nrog digital tau txais lossis khaws cia, los ntawm lub khoos phis tawj lossis lawv tus kheej lub cim xeeb, kuj muaj tib lub strip kaw ua haujlwm.
Yog tias DMM muaj min / max / nruab nrab kaw hom, DMM yuav nyeem cov ntawv nyeem ntawm lub sijhawm tsis tu ncua, ib yam li daim kab xev kaw.
Tab sis tsis zoo li daim kab xev kaw, uas txuag kev nyeem ntawv, kev nyeem ntawv yog piv rau qhov kev nyeem ntawv khaws tseg yav dhau los los txiav txim siab seb tus nqi siab dua li qhov siab tshaj plaws yav dhau los lossis qis dua qhov tsawg kawg nkaus dhau los. Yog tias muaj, nws yuav raug hloov nrog cov ntawv nyeem tshiab. Tus nqi Ameslikas tuav nyob rau hauv lub siab los yog tsawg nyeem ntawv sau npe.
Tom qab lub sijhawm sau cia, koj tuaj yeem rov qab tau cov nqi sau npe no rau kev tso saib thiab saib qhov siab tshaj plaws thiab qhov tsawg kawg nkaus thaum lub sijhawm kaw.
Koj tuaj yeem yooj yim xam lub sijhawm tiag tiag thaum DMM kuaj pom qhov kev nyeem ntawv los ntawm tsuas yog kaw lub sijhawm thaum min / max / nruab nrab hom nkag tau qhib ua ke.
Piv txwv li, piv txwv tias koj qhib lub kaw lus kaw thaum 3:07:00 PM thiab lub sij hawm stamp ntawm qhov kev nyeem ntawv siab tshaj plaws yog 47:05, ib qho yooj yim ntxiv ntawm lub sij hawm stamp thiab lub sij hawm pib yuav txiav txim siab lub sij hawm thaum lub kev nyeem ntawv siab tshaj plaws tau sau tseg.
Kev siv DMM's Min/Max/Average recording mode yog qhov zoo heev rau kev kuaj xyuas qhov tsis sib xws.
Txawm li cas los xij, nws xav tias cov ntsiab lus sib txuas hauv Circuit Court thaum lub sijhawm ua txhaum yog txaus los nthuav tawm qhov siab tshaj plaws lossis qhov tsawg kawg nkaus. Yog tias qhov kev nyeem ntawv tshwm sim los ntawm qhov txhaum yog nyob nruab nrab ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus, ces qhov min / max / nruab nrab muaj nuj nqi yuav tsis pab tau zoo rau kev txiav txim siab qhov ua rau tsis sib xws.
Thaum lub sij hawm Min/Max/Nruab nrab kaw hom ntsuas, tsis txhob txiav qhov kev xeem coj los ntawm lub Circuit Court nyob rau hauv kev sim mus txog rau thaum lub HOLD khawm raug nias kom tsis txhob kaw, los yog kom txog rau thaum tag nrho cov tau txais kev cawmdim qhov tseem ceeb tau saib thiab archived.
Disconnecting ib tug xeem lead thaum kaw yuav ua rau lub multimeter ua tus nqi uas tshwm nyob rau hauv disconnected xeem lead thiab cuam tshuam rau qhov nruab nrab tus nqi tau txais kev cawmdim thaum lub xeem txhuas txuas nrog, thiab tuaj yeem cuam tshuam qhov tsawg kawg nkaus lossis siab tshaj tus nqi txuag.
