Ka'idar aiki

Masana'antu zafi juriya raba biyu nau'ikan platinum zafi juriya da jan ƙarfe zafi juriya.
Heat juriya ne ta amfani da abu a lokacin da zafin jiki canji da kansa juriya kuma tare da canji halaye don auna zafin jiki. Heat juriya zafi sashi (zazzabi element) irin daidai twisted da ƙarfe daidai a kan wani kwakwalwa da aka yi da insulation kayan. Lokacin da akwai wani gradient na zafin jiki a cikin kafofin watsa labarai da aka auna, zafin jiki da aka auna shine matsakaicin zafin jiki a cikin matsakaicin kafofin watsa labarai a cikin kewayon da kayan zafin jiki ke ciki.
Haɗuwa irin zafi juriya yafi kunshi da junction akwatin, kariya bututu, junction tashar, karkatarwa fuska akwatin zazzabi m sassa, da kuma sanya tare da daban-daban shigarwa m na'urori.
Wani ɓangare na zafin jiki na nau'in WZP na platinum juriya shine platinum waya mai ruwa, wanda aka fi amfani da shi a lokacin da ake buƙatar saiti biyu na nunawa, rikodi ko daidaitawa don gano zafin jiki na wuri guda ɗaya a lokaci guda. A zazzabi m bangare na WZC irin jan ƙarfe juriya ne jan ƙarfe waya winding.

Platinum juriya

Platinum shine mafi kyawun kayan don yin juriya mai zafi, kayan aikinsa na sinadarai suna da kwanciyar hankali, musamman ƙarfin antioxidant mai ƙarfi, juriya mai girma, tsari mai kyau. Daidaitaccen ma'aunin zafin jiki na Platinum resistance thermometer shine mafi girma a cikin ma'aunin zafin jiki na masana'antu na yanzu, yana daya daga cikin nau'ikan ma'aunin zafin jiki guda huɗu na ITS-90, wanda zai iya wucewa daidaitaccen zafin jiki na 13.8033K ~ 961.78 ℃. Masana'antu platinum juriya thermometer ne mafi yawan Pt100, Pt10 biyu, da kuma Pt1000, Pt800, Pt500 da aka yi amfani da ƙasa.

Jangilar juriya

Jangila ma ne mafi kyau kayan yin zafi juriya, low farashi, sauki tsabtace, da high juriya zafin jiki coefficient, sake dubawa mai kyau, sauki aiki a cikin rufi jan gila, jan gila juriya a cikin -50 ~ 150 ℃ kewayon juriya zafin jiki halaye ne kusan layi. Masana'antu jan ƙarfe juriya thermometer yanzu Cu50, Cu100 biyu, saboda yanzu platinum juriya ci gaba da rage farashin, mafi yawan lokuta jan ƙarfe juriya da platinum juriya ya maye gurbin.

Manyan alamun fasaha

The juriya darajar (R100) da kuma juriya R0 darajar a 0 ℃ da zafi juriya sanyi bangare na 100 ℃: (R100 / R0)
rabuwa lambar Pt100: A matakin R0 = 100 ± 0.06Ω B matakin R0 = 100 ± 0.12Ω R100 / R0 = 1.3850

Daidaito na zafi resistance

Ma'aunin daidaito wanda aka sani da yardar da karkatarwa ko "karkatarwa", yana nufin yadda halayen zafin jiki na juriya na takamaiman juriya ya dace da daidaitattun jadawalin rabuwa na irin wannan juriya. Daya tare da zafi juriya
Misali, a ka'ida babu kayan aiki, tsarin tsari, jihar sarrafawa daidai da juna biyu, don haka duk wani juna yana da karkatarwa da daidaitaccen tsarin rabuwa, sakamakon gwajin biyu na duk wani juna ba su da daidaito, za su iya dacewa da daidaitaccen tsarin rabuwa ne kawai a wani mataki. Dangane da girman bar zafi juriya a cikin matakan A, B, duba cikakken bayani a cikin teburin da ke ƙasa:

Amsa Lokaci

Lokacin da zafin jiki ya canza, fitarwar juriya ta zafi ta canza zuwa daidai da kashi 5% na wannan canjin mataki, lokacin da ake buƙata wanda ake kira lokacin amsawar zafi, wanda aka nuna ta τ 0.5.

Nominal matsin lamba na thermal resistance

Gabaɗaya yana nufin matsin lamba na waje (tsayayye) da bututun karewa zai iya jurewa a wannan zafin jiki na aiki ba tare da karya ba. Ba wai kawai dangane da kare bututun kayan aiki, diamita, kauri na bango ba, amma kuma dangane da tsarin tsarinsa, hanyar shigarwa, zurfin sanya da nau'in akwatin kwarara na kafofin watsa labarai da aka gwada.

Minimum sanya zurfin zafi juriya

Yawancin ba kasa da 300mm ba (sai dai kayayyakin musamman)

insulation juriya

Gwajin ƙarfin lantarki na yau da kullun zafin jiki na juriya yana da kyau ga wani darajar DC 10 ~ 100V, yanayin zafin jiki yana cikin kewayon 15 ~ 35 ℃, dangi zafi ya kamata ba ya fi 80%. The yau da kullun zafin jiki insulation juriya darajar ya kamata ba kasa da 100MΩ.

Lead tsarin zafi juriya

Matsayin zafin jiki na madadin zafin jiki yana nufin zafin jiki da aka gane ta hanyar madadin ƙarshen ɓangaren zafin jiki, babban ƙarancin zafin jiki yana ƙayyade girman ɓangaren juriya, amma ƙimar juriya na fitarwar ɓangaren ma'auni ya ƙunshi juriya ta jagora, don haka girman juriya ta jagora da kwanciyar hankali da hanyar sarrafawa kai tsaye suna ƙayyade daidaito na madadin zafin jiki. An san daga halayen rarrabuwa na juriya mai zafi, matsakaicin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin canjin can Jagoran juriya ya ƙunshi sassa biyu na jagora juriya na kayayyakin juriya na zafi (wanda ake kira juriya na ciki) da jagora juriya (wanda ake kira juriya na waje) tsakanin kayayyakin juriya na zafi zuwa kayan aikin nuni. Hanyar jagora ta raba zuwa nau'ikan uku:
Biyu waya tsari: zafi juriya kayayyakin ba kawai biyu jagora wayoyin, auna juriya ƙunshi jagora juriya, da kuma gabaɗaya jagora juriya ≤0.1Ω. Biyu waya jagora hanyar auna kuskure babban, yawanci amfani da jagora ba tsawo, auna daidaito bukatun ba high lokuta. Biyu wayoyi tsarin kawai nufin ciki jagora kayayyakin zafi juriya daukar biyu jagora, mai amfani shigar da waje jagora dole ne a yi amfani da uku jagora.
Uku waya tsarin: zafi juriya kayayyakin da aka ba da uku jagora, idan uku jagora juriya daidai, za a iya kawar da jagora juriya tasirin a kan ma'auni sakamakon, ciki jagora da waje jagora duka amfani da uku jagora, shi ne mafi m waya hanya a masana'antu samar. Kamar yadda aka nuna a cikin hoton da ke ƙasa, muddin juriya na wayoyi uku suna daidai (watau R1 = R2 = R3), to juriya na kayan aikin ƙididdigar zafi R0 ba shi da alaƙa da girman juriya na wayoyin, kuma ana iya bayyana shi a matsayin: R0 = RAC - RAB.

Hudu waya tsarin: zafi juriya kayayyakin da aka ba da huɗu jagora, wannan hanyar zai iya gaba daya kawar da jagora juriya a kan ma'auni sakamakon, ma'auni daidaito ne high, gabaɗaya kawai dace da daidaito ma'auni, kamar misali platinum juriya thermometer.
Kamar yadda aka nuna a sama, ba tare da la'akari da ko juriya R1, R2, R3, R4 na wayoyin huɗu suna daidai ba, juriya na kayan aikin ƙididdigar zafi na R0 ba shi da alaƙa da girman juriya na wayar, kuma ana iya bayyana shi a matsayin: R0 = (RAD + RBC-RAB-RCD) / 2.

Tsarin samfurin zafi

Majalisar zafi juriya yafi ƙunshi asali tsari na junction akwatin, kariya bututu, junction tashar, juriya jagoranci da kuma zazzabi juriya, da kuma sanya tare da daban-daban shigarwa m kayan aiki.

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