Qhov kev ncua deb ntawm cov electrodes hauv aRhuav tshem voltage (BDV) cov khoom kuaj kuajnyob ntawm covKuaj tus qauvua raws. Cov kev teeb tsa feem ntau yog:
ASTM D877 (US tus qauv):
Cov hluav taws xob yog tiaj, sib dhos disks.
Qhov nrug deb:{{0 {}}. 1 nti (2.54 hli).
Iec 60156 (Tus Txheej Txheem Thoob Ntiaj Teb):
Cov hluav taws xob feem ntau yog spherical (12.5-13 hli inch).
Qhov nrug deb:2.5 hli.
Cov Lus Tseem Ceeb:
Qhov sib txawv me me (2.5 hli vs. 2.54 hli) xav txog cov kev xav hauv cheeb tsam.
Yeej ib txwm paub meej qhov sib txawv nrog tusCov Khoom Siv Ntaus Chaw Tsim Tshuajlos yogSiv cov qauv xeem(xws li, Astm, iec, lossis lwm tus nyiam yog 6792).
Kev ua kom zoo rau elecignment kom zoo thiab kev nyiam huv yog qhov tseem ceeb rau cov txiaj ntsig tau.
Rau kev sim roj hloov roj hloov, 2.5 mm (iec) yog kev xav tau dav thoob ntiaj teb, thaum 2.54 hli (astm) muaj ntau nyob hauv peb chav kuaj xyuas cov txheej txheem.
