Multimeter mechanical xoom hloov txoj kev thiab cov kauj ruam
Yuav ua li cas kho ib tug multimeter rau xoom
Yuav ua li cas mechanically xoom ib qho hluav taws xob multimeter. Kuv tsis paub yuav ua li cas mechanically xoom ib qho hluav taws xob multimeter. Ib qho yooj yim mechanical zeroing method rau analog multimeter:
Ua ntej qhib lub nraub qaum ntawm lub multimeter, koj tuaj yeem pom: pointer, txav coil, hairspring, thiab lwm yam. Qhov kawg taw tes ntawm lub nplhaib sab nraud ntawm lub hairspring yog welded rau ntawm lub downturned kem, thiab sab sauv ntawm lub downturned kem yog rotatable. nplhaib. Kev hloov xoom yog tig lub diav rawg sab laug thiab sab xis. Siv ib rab riam los yog ntsia hlau los tig lub pob qhov rooj. (Yog hais tias nws yog detached, nws yuav tsis tau mechanically zeroed.) Tsuas yog reset nws.
Muaj ib lub voj voog yas nyob rau hauv qhov chaw hauv qab lub iav saum npoo ntawm lub multimeter, uas tuaj yeem hloov kho nrog lub tiaj tus ntsia hlau ntsia hlau kom lub pointer tuaj yeem hloov kho mus rau qhov chaw zoo li qub thaum lub multimeter tsis siv. Qhov no yog hu ua mechanical zero adjustment.
Multimeter mechanical xoom calibration
Muab lub multimeter tiaj tus rau ntawm qhov chaw kab rov tav, tsis yog ntawm plexiglass lossis lub rooj nrog hluav taws xob zoo li qub. Siv lub hau ntswj tiaj tiaj kom maj mam kho cov ntsia hlau yas hauv qab lub dial, thiab kho lub koob mus rau xoom txoj hauj lwm ntawm sab laug. Nws yog qhov zoo tshaj rau co nws. Peb zaug, kho peb zaug, thiab nws yuav rov qab mus rau xoom tom qab txhua co co.
Multimeter, tseem hu ua multiplex meter, multimeter, peb lub hom phiaj meter, multimeter, thiab lwm yam, yog ib qho tseem ceeb ntsuas ntsuas hauv hluav taws xob hluav taws xob thiab lwm yam haujlwm. Nws feem ntau yog siv los ntsuas qhov voltage, tam sim no thiab tsis kam ua nws lub hom phiaj tseem ceeb.
Multimeters tau muab faib ua pointer multimeters thiab digital multimeters raws li lawv cov qauv duab. Lawv yog multi-functional thiab ntau yam ntsuas ntsuas. Feem ntau, multimeters tuaj yeem ntsuas DC tam sim no, DC voltage, AC tam sim no, AC voltage, tsis kam thiab suab qib. Qee qhov tseem tuaj yeem ntsuas DC tam sim no, DC voltage, AC tam sim no, AC voltage, tsis kam thiab suab qib. Ntsuas AC tam sim no, capacitance, inductance thiab qee yam ntawm cov khoom siv hluav taws xob (xws li ).
Muab lub multimeter tiaj tus rau ntawm qhov chaw kab rov tav, tsis yog ntawm plexiglass lossis lub rooj nrog hluav taws xob zoo li qub. Siv lub hau ntswj tiaj tiaj kom maj mam kho cov ntsia hlau yas hauv qab lub dial, thiab kho lub koob mus rau xoom txoj hauj lwm ntawm sab laug. Nws yog qhov zoo tshaj rau co nws. Peb zaug, kho peb zaug, thiab nws yuav rov qab mus rau xoom tom qab txhua co co.
Kuv yuav ua li cas yog tias kuv lub multimeter tsis tuaj yeem teeb tsa rau xoom mechanically?
Lub hnab tshos multimeter kuv nyuam qhuav yuav tsis tuaj yeem hloov kho rau xoom. Tom qab kho nws ib pliag, nws tseem nyob ntawm 25 volts thiab tsis tuaj yeem mus rau 0 volts.
Kev daws:
1. Hloov lub multimeter nrog ib qho tshiab.
2. Kho los ntawm koj tus kheej: Qhib lub hau sab sauv ntawm lub moos thiab koj tuaj yeem pom: tes, txav coil, hairspring, thiab lwm yam. Qhov kawg taw tes ntawm lub nplhaib sab nrauv ntawm cov hairspring yog welded mus rau kab dai, thiab sab sauv ntawm lub hanging kem yog lub nplhaib rotatable nrog rab rawg ntawm qhov kawg. Lub moos yog txuas rau ib leeg, thiab zeroing yog tig lub forked saib sab laug thiab sab xis. Muaj lub xoom-teeb khawm ntawm lub ntsej muag saib. Muaj ib qho eccentric protrusion nyob rau hauv qab ntawm xoom-kho khawm. Lub eccentric protrusion yuav tsum tau muab tso rau hauv rab rawg nrog rab rawg. Yog hais tias nws yog disconnected, mechanical zero adjustment yuav ua tsis tau. Tsuas yog rov pib dua.
