Intambo yesinxephezelo iyizintambo ezimbili ezinesendlalelo sokuvikela esinenani elifanayo nele-thermoelectromotive force ye-thermocouple ehambisanayo ebangeni elithile lokushisa (0~100°C). Amaphutha abangelwa izinguquko zokushisa endaweni yokuhlangana. Umhleli olandelayo uzokwethula ukuthi iyiphi into esetshenziswayo intambo yesinxephezelo se-thermocouple, ukuthi iyini umsebenzi wentambo yesinxephezelo se-thermocouple, kanye nokuhlukaniswa kwentambo yesinxephezelo se-thermocouple.
1. Iyiphi into esetshenziswayo ucingo lokunciphisa i-thermocouple?
Intambo yesinxephezelo evamile idinga ukuthi ama-electrode amahle nangalungile afane nezinto ezinhle nezimbi ze-thermocouple. Ama-thermocouple ohlobo lwe-K yi-nickel-cadmium (enhle) kanye ne-nickel-silicon (engemihle), ngakho-ke ngokwezinga elijwayelekile, izintambo zesinxephezelo se-nickel-cadmium-nickel-silicon kufanele zikhethwe.
2. Uyini umsebenzi wentambo yesinxephezelo se-thermocouple
Kuwukwandisa i-electrode eshisayo, okungukuthi, ingxenye ebandayo ye-thermocouple ehambayo, bese uxhuma nethuluzi lokubonisa ukuze wakhe uhlelo lokulinganisa izinga lokushisa. Yamukela ngokulinganayo indinganiso kazwelonke ye-IEC 584-3 “Ingxenye 3 ye-Thermocouple – Intambo Yokunxephezela”. Imikhiqizo isetshenziswa kakhulu kumadivayisi ahlukahlukene okulinganisa izinga lokushisa, futhi isetshenziswe kabanzi kumandla enuzi, uphethiloli, amakhemikhali, insimbi, amandla kagesi kanye neminye iminyango.
3. Ukuhlukaniswa kwezintambo zesinxephezelo se-thermocouple
Ngokuyisisekelo, ihlukaniswe ngohlobo lokwelulwa kanye nohlobo lwesinxephezelo. Ukwakheka kwamakhemikhali okujwayelekile kwentambo ye-alloy yohlobo lokwelulwa kufana nokwe-thermocouple efanisiwe, ngakho-ke amandla okushisa nawo ayafana. Amelelwa ngu-“X” kumodeli, kanti ukwakheka kwamakhemikhali okujwayelekile kwentambo ye-alloy yohlobo lokwelulwa kuyafana. Ihlukile ku-thermocouple efanisiwe, kodwa ebangeni layo lokushisa lokusebenza, amandla okushisa aseduze nenani elijwayelekile lamandla okushisa okushisa e-thermocouple efanisiwe, amelelwa ngu-“C” kumodeli.
Ukunemba kwesinxephezelo kuhlukaniswe ngebanga elijwayelekile kanye nebanga lokunemba. Iphutha ngemva kwesinxephezelo sebanga lokunemba ngokuvamile liyingxenye nje yalelo lebanga elijwayelekile, elivame ukusetshenziswa ezindaweni ezinezidingo eziphezulu zokunemba kokulinganisa. Isibonelo, ezintanjeni zesinxephezelo zezinombolo zokuphothula ze-S kanye ne-R, ukubekezelelana kwebanga lokunemba kungu-±2.5°C, kanti ukubekezelelana kwebanga elijwayelekile kungu-±5.0°C; ezintanjeni zesinxephezelo zezinombolo zokuphothula ze-K kanye ne-N, ukubekezelelana kwebanga lokunemba kungu-±1.5°C, ukubekezelelana kwebanga elijwayelekile kungu-±2.5℃. Kumodeli, ibanga elijwayelekile alimakiwe, futhi ibanga lokunemba lingezwe ngo-“S”.
Kusukela ekushiseni okusebenzayo, kuhlukaniswe ngokusetshenziswa okuvamile kanye nokusetshenziswa okumelana nokushisa. Izinga lokushisa lokusebenza lokusetshenziswa okuvamile lingu-0 ~ 100 °C (ezimbalwa zingu-0 ~ 70 °C);
Ngaphezu kwalokho, i-core yentambo ingahlukaniswa ibe yizintambo zesinxephezelo zentambo eyodwa kanye nezintambo eziningi (ezithambile), futhi ingahlukaniswa ibe yizintambo zesinxephezelo ezivamile nezivikelekile kuye ngokuthi zinesendlalelo sokuvikela, futhi kukhona nezintambo zesinxephezelo zezifunda eziphephile ngokwangaphakathi ezinikezelwe ezikhathini ezingaqhumi.