Izifudumezi ze-thermist ezinegative (NTC) zisetshenziswa njengezingxenye zezinzwa zezinga lokushisa ezinemba okuphezulu ezinhlotsheni zezimoto, izimboni, izinto zasendlini kanye nezinhlelo zokusebenza zezokwelapha. Ngenxa yokuthi izinhlobonhlobo zama-thermistors e-NTC ziyatholakala - zidalwe ngemiklamo ehlukene futhi zenziwe ngezinto ezihlukahlukene - ukukhetha okungcono kakhulu.Ama-thermistors e-NTCisicelo esithile kungaba inselele.
KunganikhethaI-NTC?
Kunobuchwepheshe obuthathu obuyinhloko benzwa yokushisa, ngayinye enezici zayo: izinzwa zokushisa zokumelana nezinga lokushisa (RTD) nezinhlobo ezimbili zama-thermistors, ama-coefficient thermitor okushisa avumayo kanye nebi. Izinzwa ze-RTD ngokuyinhloko zisetshenziselwa ukukala izinga lokushisa elibanzi, futhi ngenxa yokuthi zisebenzisa insimbi emsulwa, zivame ukubiza kakhulu kunama-thermistors.
Ngakho-ke, ngenxa yokuthi ama-thermistors akala izinga lokushisa ngokunemba okufanayo noma okungcono, ngokuvamile akhethwa kune-RTDS. Njengoba igama lisho, ukumelana kwe-thermistor ye-positive (PTC) thermistor kukhuphuka ngezinga lokushisa. Zivame ukusetshenziswa njengezinzwa zomkhawulo wezinga lokushisa ekucishweni noma kumasekethe okuphepha ngoba ukumelana kuyenyuka uma izinga lokushisa lokushintsha selifinyelelwe. Ngakolunye uhlangothi, njengoba izinga lokushisa likhuphuka, ukumelana kwe-thermistor ye-negative (NTC) thermistor kuncipha. Ubudlelwane bokumelana nezinga lokushisa (RT) kuyijika eliyisicaba, ngakho-ke linembe kakhulu futhi lizinzile ezilinganisweni zokushisa.
Imibandela yokukhetha eyinhloko
Ama-thermistors e-NTC azwela kakhulu futhi angakala izinga lokushisa ngokunemba okuphezulu (±0.1°C), okuwenza afaneleke kuhlelo olubanzi lwezinhlelo zokusebenza. Kodwa-ke, ukukhetha ukuthi yiluphi uhlobo oluzolucacisa luncike enanini lemibandela - izinga lokushisa, ububanzi bokumelana, ukunemba kokulinganisa, indawo ezungezile, isikhathi sokuphendula, kanye nezidingo zosayizi.
Ama-elementi e-NTC e-Epoxy coated aqinile futhi ngokuvamile akala amazinga okushisa aphakathi kuka -55°C no + 155°C, kuyilapho ama-elementi e-NTC afakwe ngengilazi afinyelela ku-+300°C. Kuzinhlelo zokusebenza ezidinga izikhathi zokuphendula ngokushesha okukhulu, izingxenye ezivalwe ngengilazi ziyinketho efaneleke kakhulu. Abuye aminyene kakhulu, anobubanzi obungu-0.8mm.
Kubalulekile ukufanisa izinga lokushisa le-NTC thermistor nezinga lokushisa lengxenye ebangela ukushintsha kwezinga lokushisa. Ngenxa yalokho, azitholakali kuphela ngendlela yendabuko enemikhondo, kodwa futhi zingafakwa ku-screw hlobo lwezindlu ukuze zinamathisele kurediyetha ukuze kufakwe phezulu.
Okusha emakethe akunawo umthofu ngokuphelele (i-chip nengxenye) ama-thermistors e-NTC ahlangabezana nezidingo eziqinile zomyalelo we-RoSH2 ozayo.
IsiceloEisiboneloOukubuka konke
Izingxenye zezinzwa ze-NTC nezinhlelo zenziwa emikhakheni eyahlukene, ikakhulukazi emkhakheni wezimoto. Izicelo ezijwayelekile zihlanganisa amasondo ashisayo nezihlalo, kanye nezinhlelo zokulawula isimo sezulu ezisezingeni eliphezulu. Ama-thermistor asetshenziswa kumasistimu e-exhaust gas recirculation (EGR), izinzwa ze-intake manifold (AIM), nezinzwa zezinga lokushisa kanye nezinzwa ze-absolute absolute (TMAP). Ibanga labo lokushisa elibanzi lokusebenza linokumelana nomthelela omkhulu namandla okudlidliza, ukwethembeka okuphezulu, nempilo ende enozinzo lwesikhathi eside. Uma ama-thermistors azosetshenziswa ezinhlelweni zezimoto, khona-ke izinga lomhlaba jikelele lokumelana ne-AEC-Q200 liyisibopho lapha.
Ezimotweni zikagesi neziyingxubevange, izinzwa ze-NTC zisetshenziselwa ukuphepha kwebhethri, ukuqapha ukuvunguza kogesi kanye nesimo sokushaja. Isistimu yokupholisa yesiqandisi epholisa ibhethri ixhunywe kusistimu yokupholisa umoya.
Ukuzwa izinga lokushisa nokulawula ezintweni zikagesi zasendlini kuhlanganisa inhlobonhlobo yamazinga okushisa. Isibonelo, endaweni yokomisa izingubo, ainzwa yokushisainquma izinga lokushisa lomoya oshisayo ogeleza esigubhu kanye nezinga lokushisa lomoya ogelezayo lapho uphuma esigubhu. Ukupholisa nokuqandisa, i-Inzwa ye-NTCikala izinga lokushisa ekamelweni lokupholisa, ivimbela i-evaporator ekubeni iqhwa, futhi ibona izinga lokushisa elizungezile. Ezinsizeni ezincane ezinjengama-ayini, abenzi bekhofi namaketela, izinzwa zokushisa zisetshenziselwa ukuphepha nokusebenza kahle kwamandla. Amayunithi okushisa, komoya kanye nomoya (HVAC) athatha ingxenye yemakethe enkulu.
Inkambu Ekhulayo Yezokwelapha
Inkambu ye-elekthronikhi yezokwelapha inamadivayisi ahlukahlukene eziguli ezilaliswa esibhedlela, ezilaliswa ngaphandle kanye nokunakekelwa kwasekhaya. Ama-thermistors e-NTC asetshenziswa njengezingxenye zokuzwa izinga lokushisa kumishini yezokwelapha.
Uma kushajwa idivayisi yezokwelapha encane, izinga lokushisa elisebenzayo lebhethri elishajekayo kufanele lihlale liqashelwe. Lokhu kungenxa yokuthi ukusabela kwe-electrochemical okusetshenziswa ngesikhathi sokuqapha kuncike kakhulu kumazinga okushisa, ngokushesha, ukuhlaziya okunembile kubalulekile.
Amapheshana e-Continuous Glucose Monitoring (GCM) angaqapha amazinga kashukela ezigulini ezinesifo sikashukela. Lapha, inzwa ye-NTC isetshenziselwa ukukala izinga lokushisa, njengoba lokhu kungase kuthinte imiphumela.
Ukwelashwa kwe-Continuous Positive Airway pressure (CPAP) kusebenzisa umshini ukusiza abantu abanenkinga yokuphefumula uma belele baphefumule kalula phakathi nokulala. Ngokufanayo, ezifweni ezinzima zokuphefumula, njenge-COVID-19, ama-ventilator ayimishini athatha ukuphefumula kwesiguli ngokucindezela umoya kancane emaphashini aso futhi asuse isikhutha. Kuzo zombili izimo, izinzwa ze-NTC ezifakwe ngengilazi zihlanganiswa ku-humidifier, i-catheter yomoya kanye nomlomo wokungena ukuze kulinganiswe izinga lokushisa lomoya ukuze kuqinisekiswe ukuthi iziguli zihlala zikhululekile.
Ubhubhane lwakamuva luye lwaqhuba isidingo sokuzwela okukhulu nokunemba kwezinzwa ze-NTC ezinokuzinza kwesikhathi eside. Umhloli wegciwane omusha unezidingo eziqinile zokulawula izinga lokushisa ukuze kuqinisekiswe ukusabela okungaguquki phakathi kwesampula ne-reagent. Iwashi elihlakaniphile liphinde lihlanganiswe nohlelo lokuqapha izinga lokushisa ukuze lixwayise ngezifo ezingase zibe khona.
Isikhathi sokuthumela: May-25-2023