Qhov teeb meem yuam kev ntawm kev ntsuas tib qhov hluav taws xob nrog ntau qhov sib txawv ntawm multimeter
Siv lub MF-30 multimeter ua piv txwv, nws qhov tseeb yog 2.5 qib, xaiv 100V iav thiab 25V iav los ntsuas 23V tus qauv voltage, uas iav yuav tsum xaiv yuav muaj qhov yuam kev me dua.
1. Qhov siab tshaj plaws tso cai yuam kev rau 100V iav: X(100)=± 2.5 feem pua × 100V=± 2.5V.
2. Qhov siab tshaj plaws qhov yuam kev rau 25V iav: △X(25)=± 2.5 feem pua × 25V=±0.625V.
Kev ntsuas yuam kev tsom xam:
Siv 100V thaiv los ntsuas 23V tus qauv voltage, thiab qhov taw qhia ntawm lub multimeter yog nyob nruab nrab ntawm 20.5V-25.5V. Siv 25V thaiv los ntsuas 23V tus qauv voltage, thiab qhov taw qhia tus nqi ntawm multimeter yog nyob nruab nrab ntawm 22.375V-23.625V.
Nws tuaj yeem pom tias △X(100) ntau dua △X(25), uas yog, qhov yuam kev ntawm 100V thaiv kev ntsuas yog qhov loj dua li ntawm 25V thaiv kev ntsuas.
Cov ntsiab lus: Thaum siv multimeter los ntsuas qhov sib txawv voltages, qhov yuam kev uas tsim los ntawm ntau qhov sib txawv. Nyob rau hauv cov ntaub ntawv ntawm txaus siab tus nqi ntawm lub teeb liab yuav tsum tau ntsuas, lub iav nrog qhov tsawg tshaj plaws yuav tsum tau xaiv ntau li ntau tau, uas yuav txhim kho qhov tseeb ntawm qhov ntsuas.
Qhov yuam kev ntawm multimeter ntsuas qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv
Siv lub MF-30 multimeter ua piv txwv, nws qhov tseeb yog 2.5, ntsuas tus qauv voltage ntawm 20V thiab 80V nrog 100V iav, xaiv cov iav uas muaj qhov yuam kev tsawg tshaj plaws.
Kev ntsuas yuam kev tsom xam:
1. Qhov siab tshaj qhov txheeb ze yuam kev: △A feem pua = qhov siab tshaj qhov yuam kev △X / ntsuas tus qauv voltage hloov × 100 feem pua, qhov siab tshaj qhov yuam kev ntawm 100V iav △X(100)=± 2.5 feem pua × 100V=± 2.5V.
2. Ntawm 20V, qhov taw qhia tus nqi yog nyob nruab nrab ntawm 17.5V-22.5V. Qhov siab tshaj qhov txheeb ze yuam kev yog: A(20) feem pua =(± 2.5V/20V) × 100 feem pua =± 12.5 feem pua .
3. Ntawm 80V, qhov taw qhia tus nqi yog nyob nruab nrab ntawm 77.5V-82.5V. Qhov siab tshaj qhov txheeb ze yuam kev yog: A(80) feem pua =±(2.5V/80V) × 100 feem pua =±3.1 feem pua .
Muab piv rau qhov siab tshaj qhov txheeb ze qhov yuam kev ntawm qhov ntsuas qhov ntsuas hluav taws xob 20V thiab 80V, nws yuav pom tias qhov yuam kev ntawm qhov qub yog qhov loj dua qhov tom kawg.
Cov ntsiab lus: Siv tib qhov ntau ntawm ib lub multimeter los ntsuas ob qhov sib txawv ntawm qhov sib txawv, qhov ze dua rau qhov ntsuas tag nrho, qhov tseeb dua. Thaum ntsuas qhov ntsuas hluav taws xob, ntsuas qhov ntsuas qhov ntsuas hluav taws xob yuav tsum muaj ntau dua 2/3 ntawm qhov ntau ntawm multimeter kom txo qhov ntsuas qhov yuam kev.
Cov saum toj no txheeb xyuas qhov teeb meem yuam kev ntawm multimeter ntsuas qhov sib txawv voltages. Kev xaiv cov iav sib txawv thaum ntsuas tib qhov hluav taws xob nrog ntau qhov sib txawv ntawm cov multimeter, thiab ntsuas qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov multimeter.
