Izinga lokushisa le-Cummins ne-pressure sensor pressure switch switch 4921479

Ngaphandle kokuthinta

Izakhi zayo ezibucayi azixhumani nento elinganisiwe, ebizwa nangokuthi ithuluzi lokulinganisa izinga lokushisa elingathinteki. Leli thuluzi lingasetshenziswa ukukala izinga lokushisa elingaphezulu lezinto ezihambayo, okuqondiwe okuncane kanye nezinto ezinomthamo omncane wokushisa noma ukushintsha kwezinga lokushisa okusheshayo (okwesikhashana), futhi lingasetshenziswa ukukala ukusatshalaliswa kwezinga lokushisa kwenkundla yezinga lokushisa.

Ithemometha engathinteki esetshenziswa kakhulu isekelwe emthethweni oyisisekelo wemisebe ye-blackbody futhi ibizwa nge-radiation thermometer. I-thermometry yokukhanya ihlanganisa indlela yokukhanya (bheka i-optical pyrometer), indlela yokukhishwa kwemisebe (bheka i-radiation pyrometer) kanye nendlela ye-colorimetric (bheka i-colorimetric thermometer). Zonke izinhlobo zezindlela ze-radiation thermometry zingakala kuphela izinga lokushisa elihambisanayo le-photometric, izinga lokushisa lemisebe noma izinga lokushisa le-colorimetric. Izinga lokushisa elikalwa kumuntu omnyama kuphela (into emunca yonke imisebe kodwa ingabonisi ukukhanya) izinga lokushisa langempela. Uma ufuna ukukala izinga lokushisa langempela lento, kufanele ulungise ukukhishwa kwempahla yendawo. Kodwa-ke, ukukhishwa kwezinto ezibonakalayo akuxhomekile kuphela ekushiseni nasekuphakameni kwamaza, kodwa futhi ku-surface state, i-coating kanye ne-microstructure, ngakho-ke kunzima ukukala ngokunembile. Ekukhiqizeni okuzenzakalelayo, ngokuvamile kudingekile ukusebenzisa i-radiation thermometry ukukala noma ukulawula izinga lokushisa elingaphezulu kwezinye izinto, njengezinga lokushisa lensimbi eligoqayo, izinga lokushisa le-roll, izinga lokushisa lokubumba kanye nezinga lokushisa lezinsimbi ezihlukahlukene ezincibilikisiwe esithandweni sokuncibilika noma i-crucible. Kulezi zimo ezithile, kunzima impela ukukala ukungcola kwendawo engaphandle kwento. Ngokulinganisa okuzenzakalelayo nokulawula izinga lokushisa eliqinile elingaphezulu, isibonisi esengeziwe singasetshenziswa ukwakha imbobo emnyama enendawo elinganisiwe. Umthelela wemisebe eyengeziwe ungathuthukisa imisebe esebenzayo kanye ne-coefficient ephumayo esebenzayo yendawo elinganisiwe. Ngokusebenzisa i-coefficient yokukhishwa ephumelelayo, izinga lokushisa elilinganisiwe lilungiswa ithuluzi, futhi ekugcineni izinga lokushisa langempela lendawo elinganiselwe lingatholakala. Isibuko esengeziwe esijwayelekile kakhulu isibuko se-hemispherical. Imisebe esabalele yendawo elinganisiwe eduze nendawo emaphakathi yebhola ingaboniswa emuva phezulu ngesibuko esiyi-hemispherical ukuze kwakhe imisebe eyengeziwe, ngaleyo ndlela kuthuthukiswe i-coefficient ephumayo esebenzayo, lapho u-ε ewukuphuma kwezinto ezibonakalayo futhi ρ kuwukubonakaliswa kokukhanya. yesibuko. Ngokuqondene nesilinganiso semisebe yezinga lokushisa langempela legesi nemithombo ye-liquid, indlela yokufaka ithubhu lezinto ezikwazi ukumelana nokushisa ekujuleni okuthile ukuze kwakhiwe i-blackbody cavity ingasetshenziswa. I-coefficient ephumayo esebenzayo ye-cylindrical cavity ngemva kokulinganisa okushisayo ne-medium itholakala ngokubala. Ekukaleni nasekulawuleni okuzenzakalelayo, leli nani lingasetshenziswa ukulungisa izinga lokushisa elikaliwe elingaphansi kwesikhala (okungukuthi, izinga lokushisa eliphakathi nendawo) futhi uthole izinga lokushisa langempela lendawo ephakathi nendawo.

Izinzuzo zokukalwa kwezinga lokushisa okungathinteki:

Umkhawulo ongaphezulu wokulinganisa awunqunyelwe ukubekezelelana kwezinga lokushisa kwezinto ezizwa izinga lokushisa, ngakho-ke akukho mkhawulo kuzinga lokushisa eliphakeme kakhulu elilinganisekayo ngokomthetho. Ngokushisa okuphezulu okungaphezu kuka-1800 ℃, indlela yokulinganisa izinga lokushisa okungathinteki isetshenziswa kakhulu. Ngokuthuthuka kobuchwepheshe be-infrared, ukukalwa kwezinga lokushisa kwemisebe kuye kwakhula kancane kancane kusuka ekukhanyeni okubonakalayo kuya ekukhanyeni kwe-infrared, futhi sekusetshenziswe ngaphansi kuka-700 ℃ kuya ekamelweni lokushisa ngokulungiswa okuphezulu.