Hluav taws xob yog ib qho tseem ceeb tshaj plaws kev pab cuam rau lub neej niaj hnub no, thiab txhua lub tsev thiab cov chaw tsim kho vaj tse xav kom nws khiav. Txhawm rau ntsuas kev siv hluav taws xob, E1 / E2 meter raug teeb tsa hauv txhua lub tsev lossis kev lag luam.
Ib qho E1 meter yog tus qauv hluav taws xob ntsuas hluav taws xob uas ntsuas tus nqi hluav taws xob siv los ntawm tus neeg siv khoom. Qhov ntsuas no yog siv tshuab thiab sau cov kev siv hluav taws xob hauv kilowatt-teev (kWh) ntawm lub rotating disc, uas ncaj qha qhia cov hluav taws xob uas tau siv. Qhov ntsuas no muaj cov duab analog thiab tuaj yeem nyeem ncaj qha los ntawm kev saib cov zaub. E1 meter feem ntau yog siv hauv tsev me thiab lag luam me.
Ntawm qhov tod tes, E2 meter yog ib qho hluav taws xob version ntawm E1 meter. Nws ua haujlwm zoo ib yam li E1, qhov sib txawv tseem ceeb yog tias nws muaj cov khoom siv hluav taws xob, uas tso cai rau kev nyeem ntawv ntawm kev siv hluav taws xob kom raug ntau dua. E2 'meter' muaj cov duab digital uas tuaj yeem sau cov hluav taws xob siv hauv lub sijhawm tiag tiag. E2 meter feem ntau siv hauv tsev loj thiab lag luam.
Txhawm rau nyeem E1 meter, ib tus yuav tsum nco ntsoov cov lej tso tawm ntawm sab laug mus rau sab xis, tsis suav nrog cov xov tooj liab. Txhua ntawm tsib tus lej tso tawm qhia txog tus lej hauv kWh. Piv txwv li, yog tias cov zaub qhia "01234," kev nyeem ntawv yuav yog 1234 kWh. Cov dials liab qhia cov lej thiab feem ntau tsis quav ntsej.
Kev nyeem ntawv E2 'meter' kuj tseem yog txheej txheem ncaj qha. Lub E2 meter qhia cov ntsiab lus ntawm kev siv lub sijhawm tiag tiag, ua kom yooj yim rau cov neeg siv los taug qab siv hluav taws xob ntau npaum li cas. Cov zaub kuj tseem sau cov sijhawm raws sijhawm, uas ua rau cov neeg siv khoom taug qab thaum lawv siv lub zog ntau dua thiab kho lawv cov kev noj kom haum.
Qhov tseem ceeb ntawm kev saib xyuas kev siv hluav taws xob tsis tuaj yeem overstated. Paub tias lub zog siv ntau npaum li cas yog qhov tseem ceeb hauv kev tswj cov nqi hluav taws xob. Los ntawm kev saib xyuas cov ntsuas hluav taws xob, cov tswv tsev thiab cov lag luam tuaj yeem txheeb xyuas thiab teb rau txhua qhov tsis muaj txiaj ntsig thiab kev siv hluav taws xob. Qhov no, nyob rau hauv lem, ua rau lub zog txuag thiab txo nqi.
E1 thiab E2 meters yog cov cuab yeej tseem ceeb hauv kev taug qab kev siv hluav taws xob. Txawm nyob hauv tsev me lossis kev lag luam loj, cov ntsuas no pab cov neeg siv saib xyuas lawv cov kev siv hluav taws xob kom raug thiab txiav txim siab paub txog lawv cov kev siv hluav taws xob. Kev nkag siab yuav ua li cas nyeem cov ntsuas no yog qhov tseem ceeb hauv kev tswj cov nqi hluav taws xob thiab txo qis kev siv hluav taws xob.