Kuv yuav ua li cas yog hais tias lub multimeter tsis tuaj yeem ua tsis tau mechanically zeroed?
Lub hnab tshos multimeter kuv nyuam qhuav yuav tsis tuaj yeem hloov kho rau xoom mechanically. Tom qab kho nws ib ntus, nws tseem nyob rau sab 25 volt thiab tsis tuaj yeem tig mus rau 0 volts.
Kev daws:
1. Hloov lub multimeter nrog ib qho tshiab.
2. Kho los ntawm koj tus kheej: qhib lub hau ntawm lub moos, koj tuaj yeem pom: pointer, txav coil, hairspring, thiab lwm yam. Qhov kawg taw tes ntawm lub nplhaib sab nrauv ntawm cov plaub hau yog welded rau ntawm kab ntsug, thiab sab sauv ntawm lub ntsug kem yog ib lub nplhaib rotatable nrog rab rawg ntawm qhov kawg ntawm lub nplhaib. Muaj qhov xoom hloov khawm ntawm lub hau, muaj ib qho eccentric protrusion nyob rau hauv qab ntawm xoom hloov khawm, thiab eccentric protrusion yuav tsum tau muab tso rau hauv rab rawg nrog rab rawg. Yog hais tias nws yog disengaged, nws yuav tsis tau mechanically zeroed. Tsuas yog rov pib dua.
