Yuav ua li cas xaiv mulcimeter: nws nyob ntawm koj daim ntawv thov.
Muaj ntau ntau hom kev ua haujlwm hauv kev ua lag luam tam sim no, thiab qhov kev xaiv tshwj xeeb ntawm kev siv ntau yog nyob ntawm ib tus kheej siv. Txawm li cas los xij, tsis hais txog ntawm hom twg multimeter yog xaiv, nws yog twv yuav raug hu tsis tau kev tiv thaiv kom xaiv ib qho taw tes txheej txheem multimeter. Ib tug multimeter zoo li mf47 nyob deb dua rau cov digital mottime ntawm kev ntsuas qhov tseeb thiab qee zaum ua rau nws yooj yim rau kev ntsuas kev ntsuas tsis raug. Yog li no, cov lus no tsuas yog qhia txog kev xaiv ntawm cov digital motimeter.
Ib txwm muaj 3/1/2 tus lej multimeter.
Yog hais tias cov neeg nug yuav tau yuav ib qho kev sib txuam nrog kev siv nyiaj tsawg thiab muaj lub roj teeb rau hauv tsev, tom qab siv hluav taws xob {1} Kev ntsuas digital digital xws li DT830 thiab UT33D tuaj yeem ntsuas AC / DC voltage, tam sim no, yog txaus rau kev ntsuas dav dav thiab kev saib xyuas yooj yim hauv tsev.
Los ntawm txoj kev, thaum kev yuav hom ntawm multimeter, tsis txhob cia siab tias nws yuav pheej yig. Hloov chaw, yuav cov digital multieters uas raug nqi ntau dua kaum yuan. Cov pheej yig feem ntau muaj kev ntseeg tau tsis zoo thiab txuag ntawm cov khoom sib sab hauv. Qhov hluav taws xob ntau ntawm ib qho zoo DT830 multimimeter siv lub tl062 kev ua haujlwm tau zoo tshaj plaws ntawm lub zog qis qis qis hauv cov zeb millivolt ntau. Txawm li cas los xij, cov multimeters ntawm tib qauv uas raug nqi ntau dua li kaum yuat om voltages, yog li lawv cov kev ua haujlwm tseem ceeb hauv kev ntsuas cov lativolt ac voltages.
Ntau ntau yam kev ua haujlwm digital.
Yog tias cov lus nug tau koom nrog hluav taws xob kho thiab xav tau ntsuas ntsuas ntau yam hluav taws xob, nws raug pom zoo kom yuav ib qho kev ua haujlwm tau zoo. Qhov no hom ntawm multateter muaj nyob rau hauv tus nqi xws li 70-80 rau ntau pua leej yua. Feem ntau cov neeg muaj kev ua haujlwm digital nyob rau hauv cov nqi no tuaj nrog capacitor, zaus, uas tuaj yeem ntsuas cov chaw muaj peev xwm ntawm 2000 ~ 20000 μm. Qee cov neeg muaj kev ua kom muaj ntau yam digital tseem tuaj yeem ntsuas kev coj ua, lub voj voog, ntsuas kub, thiab inductance.
Cov zaus ntau zaus tuaj yeem ntsuas tau txog 20mHz, thiab cov kev tiv thaiv ntau ntau tuaj yeem ntsuas txog 2000m ω. Qhov ntsuas kub yog {-20 ~ 1000 degree, thiab nws kuj tseem tuaj yeem ntsuas inductance, nrog ntsuas ntsuas qhov siab tshaj plaws ntawm 20H. Nws yooj yim heev rau kev ntsuas ntsuas ntau yam khoom siv hluav taws xob.
Tseeb rms digital multimeter.
Ib txwm muaj cov digital multimital tsuas yog ntsuas qhov tsawg tshaj plaws sine yoj ac voltage nruab nrab ntawm {}} hz. Yog tias cov nthwv dej ntawm cov ntsuas yog ib nthwv hluav taws xob yog ib nthwv cua, plaub ntug, lossis lwm cov chaw pov tseg, kev nyeem ntawv yuam kev yuav tseem ceeb. Yog tias cov lus nug xav tau ntsuas tsis sinusoidal ac voltage, nws raug pom zoo kom yuav ib tug tseeb rms digital digital. Qhov no hom ntawm kev zam no feem ntau yog sau npe "RMS tseeb" ntawm lub vaj huam sib luag thiab siv Ad736 tseeb rau kev ntsuas ntsuas AC Voltage. Nws tuaj yeem ntsuas tau ntsuas AC Voltage ntawm ib qho WaveForm thiab yog ywj siab ntawm waveform distortion.
