bl VsLV ls ;g iqf"V dh tkrh gS fd ehVj dh use&IysV ij fn;s x;s fooj.k ds vuqlkj ehVj dk;Z dj jgk gS ;k ugha A bl fof/k esa jksVsfVax lc&LVSUMMZ~¼vkj ,l ,l½ ls yxHkx 30 fefuV rd ÅtkZ dks jsdkMZ fd;k tkrk gS A miHkksDrk dh ehVj ds djaV lfdZV dks vkj ,l ,l ehVj ds lhjht esa dusDV fd;k tkrk gS vksj oksYVst lIyk; dks iSjsyy esa dusDV fd;k tkrk gS A nksuksa ehVj dks ,d lkFk pkyw vksj cUn fd;k tkrk gS A nksuksa ehVj }kjk jsdkMZ dh xbZ [kir dk rqyukRed v/;~;u dj izfr'kr =qfV fuEukuqlkj fudkyh tkrh gS A

Recorded consumption of meter under test= W₁
Recorded consumption of R.S.S. meter=W₂
% Error=(W₁ - W₂)/W₂

       bl fof/k esa nksuksa ehVj dks mi;qZDr n'kkZ;s vuqlkj dusDV fd;k tkrk gS ,oa ,oa fuEukuqlkj x.kuk dh tkrh gS% &