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Gwajin girgizar zafi sau da yawa ana kiransa gwajin girgizar zafi ko zagayowar zafin jiki, gwajin girgizar zafi mai girma da ƙasa.

Yawan dumama/sanyaya ba kasa da 30℃/minti ba.

Yanayin canjin zafin jiki yana da girma sosai, kuma tsananin gwajin yana ƙaruwa tare da ƙaruwar saurin canjin zafin jiki.

Bambanci tsakanin gwajin girgizar zafin jiki da gwajin zagayowar zafin jiki galibi shine tsarin nauyin damuwa daban-daban.

Gwajin girgizar zafin jiki galibi yana bincika gazawar da lalacewar rarrafe da gajiya ke haifarwa, yayin da zagayen zafin jiki galibi yana bincika gazawar da gajiyar yankewa ke haifarwa.

Gwajin girgizar zafin jiki yana ba da damar amfani da na'urar gwaji mai ramuka biyu; gwajin zagayowar zafin jiki yana amfani da na'urar gwaji mai ramuka ɗaya. A cikin akwatin ramuka biyu, canjin zafin jiki dole ne ya fi 50℃/minti.
Abubuwan da ke haifar da girgizar zafin jiki: canje-canje masu tsanani a yanayin zafi yayin ƙera da gyaran hanyoyin kamar sake haɗa solder, busarwa, sake sarrafawa, da gyarawa.

A cewar GJB 150.5A-2009 3.1, girgizar zafin jiki canji ne mai ƙarfi a yanayin zafin da kayan aikin ke ciki, kuma saurin canjin zafin jiki ya fi digiri 10/min, wanda shine girgizar zafin jiki. MIL-STD-810F 503.4 (2001) yana da irin wannan ra'ayi.

Akwai dalilai da yawa na canjin yanayin zafi, waɗanda aka ambata a cikin ƙa'idodi masu dacewa:
GB/T 2423.22-2012 Gwajin Muhalli Kashi na 2 Gwaji N: Canjin Zafin Jiki
Yanayin filin don canje-canjen zafin jiki:
Sauye-sauyen zafin jiki abu ne da aka saba gani a kayan lantarki da sassan kayan aiki. Idan kayan aikin ba a kunna su ba, sassan ciki suna fuskantar canje-canjen zafin jiki a hankali fiye da sassan da ke saman waje.

Ana iya tsammanin saurin canjin yanayin zafi a cikin waɗannan yanayi:
1. Lokacin da aka canja kayan aiki daga yanayin ɗumi na cikin gida zuwa yanayin sanyi na waje, ko akasin haka;
2. Idan kayan aikin suka fuskanci ruwan sama ko kuma suka nutse cikin ruwan sanyi kuma kwatsam suka huce;
3. An sanya shi a cikin kayan aikin iska na waje;
4. A ƙarƙashin wasu yanayi na sufuri da ajiya.

Bayan an yi amfani da wutar lantarki, za a samar da yanayin zafi mai yawa a cikin kayan aikin. Saboda canjin yanayin zafi, za a matsa wa sassan. Misali, kusa da mai juriya mai ƙarfi, hasken rana zai sa zafin saman abubuwan da ke kusa ya tashi, yayin da sauran sassan ke ci gaba da yin sanyi.
Idan aka kunna tsarin sanyaya, kayan da aka sanyaya ta hanyar wucin gadi za su fuskanci sauye-sauyen zafin jiki cikin sauri. Hakanan ana iya haifar da sauye-sauyen zafin jiki cikin sauri na kayan aiki yayin aikin kera kayan aiki. Adadin da girman canjin zafin jiki da tazara lokaci suna da mahimmanci.

GJB 150.5A-2009 Kayan Aikin Soja Dakin Gwaji na Muhalli Sashe na 5:Gwajin Girgizar Zafin Jiki:
3.2 Aikace-aikace:
3.2.1 Muhalli na Al'ada:
Wannan gwajin ya shafi kayan aikin da za a iya amfani da su a wuraren da zafin iska zai iya canzawa da sauri. Ana amfani da wannan gwajin ne kawai don tantance tasirin canje-canjen zafin jiki mai sauri akan saman kayan aikin na waje, sassan da aka ɗora a saman waje, ko sassan ciki da aka sanya kusa da saman waje. Yanayin da aka saba gani sune kamar haka:
A) Ana canja wurin kayan aiki tsakanin wurare masu zafi da yanayin zafi mai ƙarancin zafi;
B) Ana ɗaga shi daga yanayin zafi mai yawa zuwa tsayi mai tsayi (zafi kawai zuwa sanyi) ta hanyar mai ɗaukar kaya mai aiki mai ƙarfi;
C) Lokacin gwada kayan waje kawai (marufi ko kayan saman kayan aiki), ana sauke shi daga harsashin kariya daga jiragen sama masu zafi a ƙarƙashin yanayi mai tsayi da ƙarancin zafin jiki.

3.2.2 Duba Lafiya da Damuwa Kan Muhalli:
Baya ga abin da aka bayyana a cikin 3.3, wannan gwajin ya shafi nuna matsalolin aminci da kuma lahani da ke faruwa lokacin da kayan aikin suka fuskanci canjin zafin jiki ƙasa da zafin jiki mai tsanani (muddin yanayin gwajin bai wuce iyakar ƙirar kayan aikin ba). Kodayake ana amfani da wannan gwajin azaman gwajin damuwa na muhalli (ESS), ana iya amfani da shi azaman gwajin tantancewa (ta amfani da girgizar zafin jiki mai tsanani) bayan maganin injiniya mai dacewa don bayyana lahani da ka iya faruwa lokacin da kayan aikin suka fuskanci yanayi ƙasa da zafin jiki mai tsanani.
Tasirin girgizar zafin jiki: GJB 150.5A-2009 Kayan aikin soja Hanyar Gwajin Muhalli na Dakin Gwaji Kashi na 5: Gwajin girgizar zafin jiki:

4.1.2 Tasirin Muhalli:
Girgizar zafin jiki yawanci yana da mummunan tasiri ga ɓangaren da ke kusa da saman waje na kayan aikin. Nisa daga saman waje (ba shakka, yana da alaƙa da halayen kayan da suka dace), saurin canjin zafin jiki da kuma rashin bayyana tasirin. Akwatunan sufuri, marufi, da sauransu suma za su rage tasirin girgizar zafin jiki akan kayan aikin da aka rufe. Sauye-sauyen zafin jiki cikin sauri na iya shafar aikin kayan aikin na ɗan lokaci ko na dindindin. Ga misalai na matsalolin da ka iya tasowa lokacin da kayan aiki suka fuskanci yanayin girgizar zafin jiki. La'akari da waɗannan matsalolin na yau da kullun zai taimaka wajen tantance ko wannan gwajin ya dace da kayan aikin da ake gwadawa.

A) Abubuwan da suka fi tasiri a jiki sune:
1) Fashewar kwantena na gilashi da kayan aikin gani;
2) Sassan da suka makale ko suka yi laushi;
3) Fashewa a cikin ƙwayoyin halitta masu ƙarfi ko ginshiƙai a cikin abubuwan fashewa;
4) Ragewar ko faɗaɗawa daban-daban, ko kuma ƙaruwar matsin lamba da aka haifar da kayan aiki daban-daban;
5) Canzawa ko fashewar sassa;
6) Fashewar rufin saman;
7) Zubar da ruwa a cikin ɗakunan da aka rufe;
8) Rashin kariyar rufi.

B) Abubuwan da suka fi tasiri a fannin sinadarai sune:
1) Raba sassan;
2) Rashin kariyar sinadaran reagent.

C) Tasirin lantarki na yau da kullun sune:
1) Canje-canje a cikin kayan lantarki da na lantarki;
2) Daskarewa ruwa ko sanyi cikin sauri wanda ke haifar da gazawar lantarki ko na inji;
3) Wutar lantarki mai yawan gaske.

Manufar gwajin girgizar zafin jiki: Ana iya amfani da shi don gano lahani na ƙirar samfura da sarrafawa yayin matakin haɓaka injiniya; ana iya amfani da shi don tabbatar da daidaitawar samfuran zuwa yanayin girgizar zafin jiki yayin kammala samfura ko gano ƙira da matakan samar da taro, da kuma samar da tushe don kammala ƙira da yanke shawara kan karɓar yawan samarwa; lokacin da aka yi amfani da shi azaman gwajin damuwa na muhalli, manufar ita ce kawar da gazawar samfura da wuri.

An raba nau'ikan gwaje-gwajen canjin zafin jiki zuwa nau'i uku bisa ga ƙa'idodin IEC da na ƙasa:
1. Gwaji Na: Saurin canjin zafin jiki tare da takamaiman lokacin juyawa; iska;
2. Lambar Gwaji: Canjin zafin jiki tare da takamaiman canjin saurin; iska;
3. Gwaji Nc: Saurin canjin zafin jiki tare da tankunan ruwa guda biyu; ruwa;

Ga gwaje-gwaje uku da aka ambata a sama, 1 da 2 suna amfani da iska a matsayin matsakaici, na uku kuma yana amfani da ruwa (ruwa ko wasu ruwaye) a matsayin matsakaici. Lokacin juyawa na 1 da 2 ya fi tsayi, kuma lokacin juyawa na 3 ya fi guntu.