Sabon guntu mai zafi mai yawa a cikin na'urar gasss NTC Thermistor ya wuce gwajin nau'in sa'o'i 500 °C / sa'o'i 300

An jiƙa abubuwa ashirin da babu komai a cikinsu a zafin 500 °C na tsawon awanni 300. Matsakaicin juriya da karkacewar ƙimar B sun kasance ƙasa da 0.2%, kuma kowane samfurin ya kasance a cikin taga karɓar ±2.5% - don haka an cancantar rukunin.

Mun sanar a yau cewa sabon injinmu na NTC mai zafi mai zafi mai ƙarfi ya kammala gwajin nau'in kuma yanzu yana shiga cikin samar da yawan aiki.

Sashen wani thermistor ne mai ƙarewa ɗaya, wanda ba shi da gubar gilashi, tare da kan ji na 2.3 mm, wanda aka ƙayyade a R200 °C = 1.0 kΩ ±2.5% da B100/200 °C = 4537 K. An yi shi ne don aikace-aikace inda sinadarin ji da kansa - ba na'urar bincike da aka shirya ba - ya zauna a cikin yanayi mai zafi sosai.

Abin da aka gwada

An gudanar da gwajin nau'in samfura 20 da ke wakiltar samarwa a kan 23 ga Yuli, 2026, zuwa tsarin gwajin nau'in samfurin. An ɗauki samfuran zuwa ɓangaren ji: an cire rufin da kuma hannun riga na fiberglass, don haka an fallasa sinadarin NTC kai tsaye ga yanayin gwaji maimakon a kare shi daga taron.

Gwaji abu:

• ajiyar zafin jiki mai yawa

Yanayi:

• An riƙe sinadarin NTC mara komai a cikin yanayin zafi na 500 °C na tsawon awanni 300

Girman samfurin:

• An gabatar da guda 20, an duba guda 20

Nau'in samfurin:

• abu (matakin sashi)

Ka'idojin karɓa:

• babu lalacewa, babu iskar shaka; ƙimar R a 100 °C da 200 °C da kuma B100/200 °C a cikin ±2.5% na ƙimar farko

Sakamako

An gano duba gani babu sassautawa, lalacewa, nakasawa ko karyewa a gidajen da aka yi rivetDuk samfuran guda 20 sun cika sharuɗɗan karɓa kuma an yi wa rukunin hukunci wanda ya cancanta.

A zahiri: bayan awanni 300 a zafin jiki na 500 °C, matsakaicin karatun juriya ya motsa ƙasa da sassa biyu a cikin dubu, kuma ƙimar B - sigar da ke ƙayyade yadda na'urar firikwensin ke bin diddigin zafin jiki - ta kasance ba ta canzawa ba.

Me yasa gina NTC 500 °C yake da wahalar samu

Karanta sakamakon abu ne mai sauƙi; samar da shi ba abu ne mai sauƙi ba. Thermistor wanda aka kimanta shi kawai don yanayin zafi mai yawa da kuma thermistor wanda har yanzu yana karantawa iri ɗaya bayan ɗaruruwan sa'o'i a zafin jiki na 500 °C samfura ne guda biyu daban-daban. Dole ne a magance matsaloli huɗu a lokaci guda.

Gilashin yumbu yana ratsawa daga ciki. Halayyar NTC ta samo asali ne daga musayar caji tsakanin wuraren oxide na ƙarfe na canzawa a cikin yumbu (Mn3+/Mn4+ a cikin tsarin spinel na gama gari), kuma duka juriya da ƙimar B suna da alaƙa kai tsaye da wannan ma'auni. A 500 °C, ana tura kayan don sake daidaita kansu: ƙaura ta cation, oxidation da jinkirin sake sintering duk suna motsawa gwargwadon yadda firikwensin ya dogara da su, kuma suna motsawa da sauri fiye da yadda yake zafi. Ana yanke shawarar riƙe R da B a cikin ±2.5% bayan sa'o'i 300 a cikin foda da bayanin harbi tun kafin gwajin.

Dole ne a ajiye wutar lantarki da gubar. A gefen ƙwallo, dole ne wutar lantarki ta ci gaba da hulɗa da ohmic. A zafin 500 °C, haɗuwa tsakanin lantarki da yumbu, haɓakar oxide, da rashin daidaito a faɗaɗa zafi tsakanin yumbu, lantarki da gubar duk suna ƙara juriyar hulɗa wanda ke raguwa akan lokaci - kuma ƴan kashi na hulɗar hulɗa suna kama da ƴan kashi na ɗigon sinadarai akan mita.

Gilashin dole ne ya tsira da ɓangaren, ba kawai rufe shi ba. Dole ne dutsen ya jika ya rufe abin ba tare da ya yi tasiri da shi ba, ya daidaita faɗaɗar zafi sosai don ya jure dumama da sanyaya akai-akai ba tare da fashewar ƙananan ba, kuma ya riƙe siffarsa a 500 °C yayin da yake zama siriri don kiyaye amsawar zafi da sauri. Boye-boye, kumfa da ƙananan fasa sune hanyoyin gazawar gargajiya a nan, kuma yawanci ba a ganin su a kan benci.

Magance dukkan huɗun a lokaci guda - da kuma tabbatar da hakan sama da awanni 300 - shine abin da ya raba samfurin dakin gwaje-gwaje da ɓangaren da za a iya jigilarwa. Wannan shine aikin da ke bayan sakamakon da ke sama.

Me yasa wannan yake da muhimmanci

Yawancin thermistors na NTC masu iyaka ɗaya an gina su ne a kusa da murfin epoxy ko resin waɗanda iyakokinsu suka yi ƙasa da 500 °C. Idan abin da ke ji da kansa zai iya tsira daga wannan yanayin, ana iya sanya firikwensin kusa da tushen zafi:

• tsarin dumama kayan aiki, kayan girki da ƙananan kayan aikin girki
• na'urorin dumama ruwa, tukunyar ruwa da na'urorin dumama
• murhunan masana'antu, matakan dumama da kayan aikin sarrafawa
• duk wani ƙira inda taron bincike zai yi jinkiri ko kuma ya yi yawa sosai

Domin tsarin da aka gwada shine babu komai a ciki, sakamakon ya ware ƙarfin zafin jiki mai yawa na firikwensin maimakon kariyar zafi da wani gida ke bayarwa.

Daga tabbatarwa zuwa samar da girma

An kammala nazarin yiwuwar kuma gwajin nau'in ya wuce, don haka an share wannan ɓangaren don samar da taro. Tagar tsari da ƙa'idodin dubawa da suka samar da waɗannan samfuran 20 masu cancanta ana kai su layin samarwa, kuma ma'aunin karɓa iri ɗaya - babu lalacewa ko iskar shaka, kuma R da B cikin ± 2.5% na ƙimar farko bayan 500 °C / awanni 300 - ya shafi wuraren samar da taro.

Ana samun samfuran injiniya yanzu. An shirya fara samar da kayayyaki da yawa a cikin [wata, shekara]; da fatan za a tuntuɓe mu don neman MOQ, lokacin jagora da cikakken rahoton gwajin nau'in.