Dianzhiyan zafi waya rayuwa gwajin inji ne yafi amfani da gwada yawan shan taba tashoshi, gwada hayaki zafin jiki, gwada girgiza yawan lokuta, gwada fitila nuna jihar. Ka'idarsa ita ce daidaita wani nau'i na numfashi ko matsin lamba na numfashi, numfashi bakin samfurin a lokacin da ya tsaya, don haka sake zagayowa har sai baturin dianzhiyan ko dianzhiyan ya ƙare ko ya sauka zuwa wani ƙarfin lantarki, don haka binciken rayuwar aikin baturin dianzhiyan ko dianzhiyan da ingantawa.

A dianzhiyan, wayar zafi ke da alhakin dumama, tururi mai, saboda haka samar da hazo, wanda aka ma kira juriya waya, a zahiri shi ne ƙarfe waya, gami waya. Heating waya juriya za a canza tare da zafin jiki canji, a halin yanzu dianzhiyan ta zafin jiki sarrafa fasaha ne bisa ga wannan halaye na karfe don cimma zafin jiki sarrafa aiki. Misali: juriya na wayar zafi a zafin jiki na dakin shine 0.1Ω, bayan samar da wutar lantarki tare da zafin jiki ya tashi idan ya kai 100 ℃, juriya ya canza zuwa 0.13Ω, lokacin 200 ℃ ya zama 0.15Ω, lokacin 300 ℃ ya zama 0.19Ω, bisa ga irin wannan dokar canjin juriya, guntu-guntu zai lissafa zafin jiki na tashin zafi. Kuma wannan dokar canjin juriya shine "TCR" ƙimar canjin juriya ta zafin jiki, ƙimar "TCR" ta kowane kayan daban-daban ce, don haka idan an yi amfani da nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin nauyin

1) Ƙididdigar 4 takamaiman nitroamine mahada bisa ga takardun fasaha na FDA

2) Gwajin propylene, glycol da sauran abubuwa masu cutarwa a cikin man sigari na lantarki.

3) nauyi karfe hanyar auna nauyi karfe na dianzhiya man fetur

4) Buƙatun gwajin ƙwayoyin cuta da ingancin lalata na dianzhiyan.