Gano kuskuren Eddy na yanzu hanya ce ta gano aibi wacce ke amfani da ka'idar shigar da wutar lantarki don gano lahanin saman abubuwan da aka gyara da kayan ƙarfe.Hanyar ganowa ita ce na'urar ganowa da rarrabuwar sa da kuma tsarin ganowa.

Fa'idodin gano aibi na yanzu don bututu marasa sumul sune: sakamakon gano lahani na iya fitowa kai tsaye ta siginar lantarki, wanda ya dace don ganowa ta atomatik;saboda hanyar da ba ta sadarwa ba, saurin gano kuskure yana da sauri sosai;ya dace don gano lahani na lahani.Rashin lahani shine: lahani a cikin sassa masu zurfi a ƙarƙashin saman bututun ƙarfe maras kyau ba za a iya gano su ba;yana da sauƙi don samar da sigina mara kyau;yana da wahala a rarrabe nau'in lahani kai tsaye daga siginar da aka nuna da aka samu ta hanyar ganowa.
Aiki na gano lahani na bututu maras ƙarfi ya haɗa da matakai da yawa kamar tsabtace saman yanki na gwajin, kwanciyar hankali na gano lahani, zaɓi na ƙayyadaddun abubuwan gano lahani, da gwajin gano aibi.

Jagoran halin yanzu a cikin samfurin bututu maras sumul ya saba da na yanzu na coil na farko (ko coil excitation).Madaidaicin filin maganadisu wanda eddy current ya haifar yana canzawa tare da lokaci, kuma idan ya wuce ta babban coil, yana haifar da canjin halin yanzu a cikin nada.Saboda alkiblar wannan halin yanzu ya saba wa na eddy current, sakamakon shine shugabanci iri daya da ainihin halin yanzu mai ban sha'awa a cikin nada na farko.Wannan yana nufin cewa halin yanzu a cikin naɗaɗɗen farko yana ƙaruwa saboda amsawar magudanar ruwa.Idan eddy halin yanzu ya canza, wannan ƙarar ɓangaren shima yana canzawa.Sabanin haka, ta hanyar auna canjin halin yanzu, za a iya auna canjin da ake samu, don samun bayanai game da lahani na bututun ƙarfe mara nauyi.

Bugu da kari, alternating current yana canza alkiblar na yanzu a wani mitoci na tsawon lokaci.Akwai wani bambanci a cikin lokacin motsi na motsi da halin halin yanzu, kuma wannan bambancin lokaci yana canzawa tare da siffar yanki na gwaji, don haka ana iya amfani da wannan sauyin lokaci a matsayin wani yanki na bayanai don gano yanayin maras kyau. karfe tube gwajin yanki.Sabili da haka, lokacin da aka motsa yanki ko coil a wani ƙayyadadden gudu, nau'i, siffar da girman lahani na bututun ƙarfe za a iya saninsa bisa ga yanayin motsi na canjin halin yanzu.Madadin halin yanzu da oscillator ke samarwa yana shiga cikin nada, kuma ana amfani da madannin maganadisu a jikin gwajin.Ana gano halin yanzu na yanki na gwajin ta coil kuma ana aika shi zuwa da'irar gada azaman fitowar AC.